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JavaScript developer - the most popular interview questions and answers!

January 26, 2023
15 min read

Interview for a developer position - what does it look like?

Everyone knows that interviews are not always easy. Especially in the IT industry, the requirements for a potential employee are usually strictly defined. Of course, you can avoid the stress associated with it, if you properly prepare yourself. Therefore, I am here to help!

If you have successfully passed the first stage of the interview - the easier one, where you talk about yourself, the conversation revolves around questions such as "why do you want to work with us" etc., the second stage of recruitment is way more specific and demanding.

Most often, the second stage of recruitment is the so-called "technical interview", checking the candidate's knowledge. In this article, I have presented 10 JavaScript recruitment questions (and a bonus!) along with the answers. For each of the questions, I added code examples to make it easier for you to understand and remember the issues - which may turn out to be very useful in a stressful situation, which is undoubtedly an interview. In the end, I also included a few tips that I would like to hear myself while preparing for the first job interviews in a software company.

Top 10 JavaScript interview questions:

Javascript interview questions

1. What is var, let, and const and how are they different?

In JavaScript, var, let, and const are the three ways to declare variables.

Before the ES6 standard, there was only one way to declare variables - var.

- Var is a variable declaration for the entire function, i.e. it has a function scope;

Var allows you to re-declare a variable, i.e. another declaration of the same variable overwrites it.


var language = 'Polish';

var language = 'English';

var language = 'Spanish';

console.log (language);


The last assigned value, which is 'Spanish', will be displayed in the console.

Var is hoisted, so all variable declarations are moved to the beginning of the function, and this declaration will be assigned the value "undefined".


console.log (quote);

var quote = "Programming isn't about what you know; it's about what you can figure out. - Chris Pine"


By hoisting in the console, instead of a Reference Error see 'undefined'.

- Let

As already mentioned, the declaration of the let variable was introduced in ES6. The scope of the variable declared by the word let is block scope.


let today = 'Monday'


let today = 'Wednesday'


console.log (today);


The console will return 'Monday' because the let declaration is limited within the scope of the block in which it was defined. If we wanted to see 'Wednesday' in the console, we would have to move console.log (today) higher - to the block where we have this declaration.

A variable declared by let cannot be re-declared. If we changed var to let in the example of the language, you would get an error. To get the same result as with var, we would have to modify the function this way:


let language = 'Polish';

language = 'English';

language = 'Spanish';

console.log (language);


A variable is declared once and then its value is changed.

- Const

Like let, this variable declaration was introduced in ES6, and like let has block scope. As in the case of let, we cannot declare variables with the same name in the same block.

So what's the difference between let and const? A variable declared with const cannot change its value.


const weather = 'Sunny day'

weather = 'Rainy day'


We get "typeError - invalid assignment"

2. What is hoisting?

The answer to the previous question partially answers this as well because the phenomenon of hoisting is closely related to the declaration of variables.

The declarations of functions and variables are placed at the beginning of the function, i.e. variable declarations are performed first before the rest of the code. It should be remembered that this is only a variable declaration without assigning a value and the fact that this mechanism occurs only when declaring a variable var.


console.log (color);

var color = 'blue'


In the console, we will see 'undefined'.

3. What are closures?

It is creating one function inside another, where the inner function has access to eigenvariables and parent variables, and if there are global variables, to them as well. The external function cannot access the variables of the internal function. This is best illustrated by an example:


var global = "I'm global"

function parent () {

var parent_variable = "I'm parent"

console.log (global);

console.log (child_variable);

function child () {

var child_variable = "I'm child"


child ();


parent ();


The console will first print "I'm global" and then the error "ReferenceError: child_variable is not defined".

Let's modify the code a bit.


var global = "I'm global"

function parent () {

var parent_variable = "I'm parent"

function child () {

var child_variable = "I'm child";

console.log (global);

console.log (parent_variable);


child ();


parent ();


This time we won't get an error because the child function has access to both global and parent variables. So in the console, we get "I'm global" and "I'm parent".

4. What is an IIFE (Immediately Invoked Function Expression)?

This is a function that will be executed immediately when it appears in your code. What does this feature look like? This function is wrapped in additional parentheses followed by another pair of parentheses.


(function () {

console.log ("I'm an immediate function");

}) ();

(function (name) {

console.log (name);

}) ("I'm IIFE!");


This is an anonymous function and is not stored in any variable - it will run and will not exist in any further parts of the code.

5. What is the arrow function?

This is the way of declaring a function introduced in ES6. The arrow function captures the value of this at the time it is declared, not the function call. This is the same as using the prototype function Function.prototype.bind. To use the arrow function we use the sign, => which is the so-called thick arrow.


const greeting = (name) => {

  return 'Good morning' + name;



6. What is a pure function?

This is a function that must meet these two conditions:

1. It must always return the same result for the same input.

2. It cannot modify external values.


function sum(a, b) {

 return a + b;



For a better illustration, two examples of impure functions:


let drawer = ['book', 'notebook', 'pen', 'ruler'];

function addItem () {

drawer.push ('pencil');



This is not a pure function as it modifies an external variable.

Let's stick with the drawer variable and try to get a random item from it.


let drawer = ['book', 'notebook', 'pen', 'ruler'];

function getRandomItem () {

return drawer [Math.floor (Math.random () * drawer.length)]



This is not a pure function as the result will not be the same every time.

7. What is the difference between the operator == and ===?

A double equal sign compares values, and a triple equal sign additionally checks for type compatibility.


1 == '1' // true

1 === '1' // false


8. What is the difference between undefined and null?

- Undefined means that the variable has been declared but not yet assigned a value.

- Null is the assigned value and means blank.

Null must be assigned to the variable as a value, and undefined is the default value when nothing has been assigned.

9. What is a ternary operator?

It is a conditional operator, often used as a shorthand for if functions.

It consists of three parts separated by a question mark and a colon.

condition ? - what will be returned when the condition is

true: what will be returned otherwise (false)


userType === 'premium'? 'Welcome to our platform': 'Content avialable for Premium users'


10. What are falsy values? What falsy values ​​do you know?

Falsy value - a value considered to be false when used in a boolean context.


false, null, undefined, 0, NaN, ''  (empty string)

We've covered the basics, so now I suggest having some fun.

Bonus! Decipher the secret word.

Perhaps you should read the word from right to left. Let's try!


function solution(str) {

 return str.split (''). reverse (). join ('');



Let's look at what happens inside the function: split () splits our string into an array containing an ordered list of substrings, that is:


['T', 'I', 'n', 'o', 'b', 'r', 'a ',' Q ']


then reverse the order of the elements in the array with the function:


[' Q ',' a ',' r ',' b ',' o ',' n ','I', 'T']


to get the string again use the function:




A handful of tips at the end

Perhaps when the recruiter sees that you are trying to answer and you are going in the right direction, he will suggest it, drop a keyword that will help you develop your thoughts.

The questions are usually not just about cramming a definition, but about understanding the topic. Often right after the question "what is it?" there is another one that makes use of the issue in practice.

When the question is what the result of a function will be, or when we are asked to write a function, it sometimes happens that at first, we have no idea what to do. In this case, it is good to "think out loud", describe what variables we have, tell what next steps should be taken to get the expected result. Perhaps the recruiter, hearing your idea, will reassure you that you are going in the right direction, or point out that some property could be used, or point out a small thing that we have omitted.

Good luck with the interview!

Software developers job offersh


Who is Quality Assurance Engineer? Not only a person, but also a process.

January 26, 2023
15 min read

Who is Quality Assurance Engineer?

Quality Assurance (QA) is a person whose tasks are testing, test planning, risk assessment, and developing processes to ultimately obtain the highest quality of software. To put it simply, it is someone who thinks of a software/application as a complete product with a specific result.

Quality assurance

On January 15, 1990, nearly fifty percent of the AT&T network in the United States went out of service, and more than 75 million calls were not made within an hour. It might seem the hacker's fault, but the truth is, a bug was lurking in a software update where one line caused a catastrophic domino effect.

In retrospect, AT&T lost a lot of money and image. So if it happened at such a large company, it can also happen to you. But don't worry, we'll introduce you to our Guardians - meet Quality Assurance Engineers.

Do you mean the developer doesn't test his code?

Developers often at the stage of task analysis, implementation, and code review, check whether their solution works properly and does not contain errors. Programmers are tied to their code and may not always be able to catch their own mistakes, therefore, in the IT world, each code is checked several times at each stage.

First, developers write tests to check the code, then send it to Code Review, where the code is checked by the rest of the team, and finally, tests are carried out by people who specialize in finding defects and conduct audits of compliance with documentation and standards.

Why do you need QA in your project?

The Test Engineer's task is to ensure the best possible quality of the software is delivered to the client. This means nothing more than making sure that the application works according to the specifications, that it does not contain errors that would prevent the use of the application, as well as that may be inconvenient for the user in terms of navigation (UX). Their main task is to make sure that everything that was supposed to be in the application is there and works as it should.

In short, this is the most annoying user of the app who keeps complaining about it.

quality assurance lisa simpson

He cooperates in the project with people in positions such as:

- Analyst / Product Owner

A person who provides QA with knowledge about the operation of the tested software/application.

- Test Manager

Decides what tests to perform, when and where to report them.

- Developer

QA tests what the developer previously implemented, so close communication between them should be a natural thing.

Developer and bugs

source: QA vs Devs

QA outsourcing

IT outsourcing services are not only the employment of the development team. If you need to expand your team with a QA Specialist / Engineer, you can also use outsourcing in this case. First of all, it is less expensive, and secondly, a more effective solution than the implementation of a person or a team responsible for QA within a given organization.

Everyone makes mistakes. We are only human beings, which is why we test the application to provide software of the best quality.

Quality Assurance is also a process

Of course, QA is not only a person, but also the entire process that begins at the stage of project analysis, and is present through all stages of design, implementation, testing, and implementation. These include:

- Analysis of the "what to do to improve quality?

- Promoting the role of quality

- Proper selection of tools

- Decision making and standard-setting in a project

Bugs in quality assurance

> "Finding and fixing a software bug after its implementation is often 100 times more expensive than finding and fixing it during the requirements analysis and design phase."

Source: Software Defect Reduction Top 10 List, Software Management Jan 2001, Barry Boehm, Victor R. Basil

The more time we spend on analyzing and carefully considering a project, the less it will cost us to fix it. We, as Qarbon IT, try to catch logical inaccuracies already at the design stage. Our developers introduce the processes of testing their code, and then the last line of defense in the form of QA conducts functional tests and writes automatic tests so that the number of defects that appear in the acceptance phase is as small as possible.

You don't have QA in your team? Change it!

If you still don't have a Quality Assurance Engineer in your team, after reading this article, it's time to change it! This is the core of the project who will ensure that your finished product released on the market will have no errors. Thanks to it, you will save time, money, and possible stress.


Startup - which companies to cooperate with?

January 26, 2023
15 min read

We live in the era of constantly emerging and developing startups. Innovation is a leading topic in business. Everyone is fighting for the attention of consumers, trying to prove that his idea is one of a kind that has a chance to appear as a real unicorn on the market.

As a quick reminder- What is a startup?]

And what is a unicorn?

Unicorn is an innovative startup with a valuation of over $ 1 billion.

Startup and cooperation with IT companies

If you want to create an innovative product that will sell in the blink of an eye and win the hearts of consumers, you have to stick to the topic and take care of the smallest details. Especially in the case of startups dealing with SaaS solutions - in this case, it is worth paying attention to how our product works - is it well made, easy to use, efficient, refined from the frontend and backend sides?

Sometimes it is worth relying on the opinion of professionals - we can have the most innovative idea in the world, but we have to accept the fact that we are not professionals in every field and, secondly, that we cannot do everything ourselves. Sometimes it is worth delegating tasks to a qualified team so that you have time to devote your attention to other, equally important matters related to the development of our startup.

From the PARP report from 2019, entitled "Startups in Poland 2019", specifically from the chapter "Who do young companies cooperate with?", We can learn that most startups have a chance to win the market thanks to cooperation with other companies in the implementation of projects. 22% of startups use it. In turn, every fifth startup cooperates with large companies on the project.

> Big companies need startups probably even more than startups of large companies

this is a quote from Andrzej Kozłowski, CEO of EmiTel.

Startup cooperation graph

Different models of cooperation

As a startup owner, you should consider different models of cooperation. If your startup deals with SaaS solutions, you need experienced developers to make your product one of a kind. You can of course hire developers for your internal team, but you can also use Staff Augmentation or Team Augmentation.

Team Augmentation for a startup

With this solution, you get a team of qualified programmers who have experience in programming solutions for startups. At Qarbon IT, we offer such a possibility - check how HERE. We will select specialized, dedicated programmers who will focus only on working on your project and, more importantly, will advise and share the necessary knowledge on how to create the best-performing product that will convince the customer to use it.

Programming consultations - it's worth using them!

As we mentioned above, sometimes it is worth relying on the knowledge and experience of someone who specializes in a given field. You can be convinced that your project idea is impeccable - your SaaS will be a revolution on the market, it will contain all possible functionalities that you can think of - and sometimes in such thinking, you bite off more than you can chew.

Sometimes you need an advisor who will tell you directly that your idea seems great, but it is impossible to implement in the way you expect. You can do it more reasonably, give up a few functionalities and make the product much simpler, but more pleasant and transparent to use. And that's what it is all about - a good impression on the consumer.

TechCrunch on cooperation between startups and IT consultants

TechCrunch - a site with news about startups and technology has recently dealt with the topic of cooperation between software companies and startups. They started searching for profiles of the best software houses and programming companies that cooperate with startups and which will take a place in the new ranking prepared by TechCrunch. Thanks to the survey they have created, startup founders can leave recommendations about co-working with IT agencies that turned out great for them. In one of the newer articles, TechCrunch decided to share some of the collected opinions with the world.

Let's look at them together and see what factors influenced the choice of specific IT companies - it's worth learning a lesson from it!

Source: Which software consultants do startups love to work with? -TechCrunch

Good Empire- recommendation for Appetiser Apps

The choice of Appetizer Apps was mainly due to their reputation. Positive opinions about this company come from all over the world. The portfolio caught the attention of Good Empire with some good quality products. However, what satisfied them the most was the cooperation model. The CTO was an internal member of Good Empire.

He managed the work of six developers from Appetiser Apps. Additionally, UX / UI designer, Product, and Project Management participated in the project. So it relied on a real collaboration between the two companies - it was not just a dependency on Appetiser Apps. With a solution like this, the product for iOS and Android was created from scratch and introduced to the market within 3 months!

Fifth Star Funds - recommendation for Aloa

The mission of Fifth Star Funds is to support developing, new startups by allocating capital at an early stage, ensuring network access, and providing all support services tailored to startup founders. The collaboration between the two companies is that Aloa provides developers by outsourcing to Fifth Star Funds who need it. According to Fifth Star Funds, Aloa's developers are trustworthy. According to them, they are also the best business advisers who will always understand what your problems are and will come with the best technological solution.

Styku- recommendation for Ajmera InfoTech

CTO of this startup, Chintan Baksh, was most interested in long-term cooperation with the software house, which would support the development of the project and introduce new products to the market for many years. Their in-house programmers, hired as juniors, began to leave the team due to market competition. The startup needed a faithful and experienced team to save time in recruiting and training programmers and to make sure it was a team you can trust. This solution allowed them to stay within their budget, while still developing its products and services.

Orbix360 Inc - recommendation for DevGrid

Orbix360 Inc was at the beginning a small, developing startup that ran its SaaS offer like a hobby WIth the team from DevGrid, the startup has grown tremendously. At the moment, they have specific business goals, an ever-growing customer base, an investment acquisition plan, and much more! All this is a merit of reliable consulting- setting realistic goals is always associated with their implementation.

Laudah -  a recommendation for Cultum

In this case, several factors had a decisive influence on the selection of Cultum as a team worthy of cooperation - their expertise - useful both in practice and in consulting, transparency of their activities and services, competitive prices, and their sincere willingness to help. It is a collaboration that continues to this day. Cultum helped translate the startup management's idea into a market-ready product - a product that customers sincerely love.

TradeNow- recommendation for Appetiser Apps (again)

This is the second recommendation for Appetiser Apps collected by TechCrunch. What made the startup trust this IT company this time? The answer is belief in a startup from the very beginning. They established cooperation at an early stage and continued it from then on so that the startup could develop.

So what makes the cooperation of a startup with a software company go in the right direction?

From all these recommendations, we can conclude and receive an answer, which is "what IT companies to trust in cooperation with my startup?".

We have collected all the good and strong points of IT companies that make a cooperation with them the best decision:

- Extensive knowledge

Research conducted by CB Insights shows that one of the most common factors of startup failure is having an inadequate team, which consists of unskilled employees. When cooperating, it is worth checking the knowledge of developers - after all, the success of your product on the market depends on them! Extensive experience = Extensive knowledge.

Check the company's portfolio, ask what experience they have in cooperation with startups, SaaS, how deep their knowledge is in running projects similar to yours. You want a team that will not only “just work for you”, but also share with you the knowledge needed to achieve success on the market.

Startup failures infograph

- Belief in your success

With the right software company, you will feel that they support you from the very beginning. You are not supposed to be "just another customer" who can be quickly unchecked from the list and added to the portfolio - you are to be a partner with whom cooperation is a priority. It is not only you who want to be successful here - it is YOU, your startup and IT company that want to achieve success TOGETHER. You will feel it through their approach to your project and their commitment.

- Healthy criticism

If the software company you work with continues to nod to all your ideas, you should consider it as a red flag. A good company is not afraid to advise you honestly - it wouldn't always be a comment like “great idea! Let's do it without thinking! ” Sometimes it will be a cold assessment, advice on how to do something better. A good company knows what will work on the market - and will tell you directly. The CB Insights research mentioned above shows that "Most of the startups fail because the product does not match the real needs of the client".

- Good financial offer

There are many reasons why it is profitable to use Team Augmentation services - we have listed it in this article- Team Augmentation- Benefits

One of the benefits is certainly the fact that these services are as cost-effective as possible.

- Long-term cooperation

Many companies, although they do not employ their internal team, are still looking for someone to stay with the project for longer. It is obvious - it is less complicated to have one trusted team that is on the project from the very beginning, has complete knowledge about a given product, and introduces new changes, improvements, or fixes any bugs. It is a good path for your startup's development - a team of programmers who want to start a long-term cooperation with you. Such offers are worth looking for among software companies offering Team Augmentation services.

- Good feedback

This is proof of fruitful cooperation with previous, satisfied customers. It's worth checking them out and asking opinions on forums, checking on the Clutch. Sometimes it is also worth consulting with friends from the industry - they probably have someone worth recommending.

How to start cooperation with a software company?

If your startup is just developing and you need a team of devs to help you in this development, follow these steps:

1. Make your startup development plan.

If you want professional help, you first need to know WHAT exactly do you need? Write down your goals. For example, “I want to develop my SaaS product for companies in the marketing industry. I want it to be simple and transparent to use and contain certain functionalities. I want it to go to the market at the end of the year and grow gradually. ' This is a goal that you must remember yourself during the cooperation and an important message for a potential IT partner.

2. Find and make a list of IT companies that cooperate with startups

If you are the owner of a startup, do not select the biggest giants on the IT market for cooperation. These companies tend to focus on larger customers. Search medium-size software houses that have in their portfolio projects for other startups. It is worth contacting such companies because smaller software houses often handle a smaller number of projects. As a result, they are carried out with the utmost care and given much more attention.

Additionally, usually smaller IT companies focused on technical and business knowledge at the same time. Smaller software houses are a good choice for clients looking for someone who, apart from programming, also understands the secrets of business.

3. Send a request for a quote

Contact selected software houses- preferably by e-mail. Tell them about your problem and try to describe your proposal as accurately as possible. This will allow the company to best price your project.

4. Involve a technician in the entire process

Make sure you already have a technician on your team. If not, be sure to hire someone like that. For what? You need such a person for the entire cooperation process. If you are not someone who is sitting in the tech world, you may not understand the programming jargon when talking to potential partners. Your Technical Person (i.e. a programmer, system analyst) will be responsible for interviewing the teams that you want to hire as a provider of programming services.

5. Choose a team that has experience in marketing and scaling

Target a team that, apart from programming, has experience in:

- product development

- development UI

- architecture design

- marketing

- business scaling

The team you work with should be aware of the company's operation - from budget to business solutions and offer you solutions that will accelerate the development of your project.

When you start working together, remember about ...


Take a close look at the team you have worked with. Answer these questions:

- Are they project-focused?

- Are they sure of the solutions provided to you

- Are they excited about the project?

If you notice that cooperation is not going well, make sure you communicate well. Ask what the problem is, what the team is having a hard time with. Discuss everything carefully at regular meetings. Include three important aspects on them:

- planning,

- review,

- retrospective.

Communication is the key- strive for it at every stage of cooperation. Choose a team that also adheres to this rule. If you are not getting current reports, you are not getting feedback - it may be worth considering working with someone more involved.

...and Feedback

About getting it from the team and, more importantly, not to underestimate it at all. This has a huge impact on your project. Feedback should always be part of the project discussion. A great way to provide and receive feedback on your project is one of the team project tools like JIRA, Asana, and Slack. These tools help everyone communicate project status effectively and accelerate product development. They will provide excellent design overview and quality assurance.

Don't be afraid to cooperate!

In summary, as a startup, it is worth cooperating with software service providers if you want your product to appear on the market and be created with due diligence. Remember to choose a team experienced in startups, creating SaaS products, and oriented not only in technological but also business knowledge.

A software company should be involved in the development of your project, be as successful as you are, be willing to work long-term, and share knowledge and valuable tips. With a well-chosen IT company, your product can be the success you dream of!

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Digitization - What is it? Why? Is it even worth it?

January 26, 2023
15 min read

Recently, in Poland “Grant for Digitalization” has been popular - the funding started on September 20 and ended on October 5. A huge number of applications came to PARP from all over the country. Although digitization and modernization of businesses have been talked about for a long time, the recent campaign to support SMEs (Small and Medium Enterprises Sector) publicized the topic and made entrepreneurs aware of the importance of technological development in their operations.

What is Grant for Digitalization?

Grant for Digitalization is a competition organized by the Polish Agency for Enterprise Development (PARP) concerning the financing of the sector of small and medium-sized enterprises in the field of digital technologies. This action was caused by the still prevalent COVID-19 virus and, consequently, the need to change the processes and the way companies operate.

Co-financing could be granted to micro, small and medium-sized enterprises operating and registered in Poland. The maximum grant that could be obtained was PLN 255,000. The total cost of the project had to be PLN 300,000. Co-financing amounted to 85% of the project value, which means that the own contribution is at least 15% of the total project cost.

But what exactly is Digitalization itself?

Digitization is nothing more than a series of activities with the purpose of increasing access to the Internet and its resources and introducing electronic mechanisms into public administration, such as:

- increasing access to the Internet,

- development of online services,

- development of competencies in the use of the Internet,

- and creating solutions and projects that encourage them to do so.

Digitization in business

More and more Polish enterprises decide to digitize. According to the Orange Insights research conducted by ICAN Research, around 8% of corporations and large companies/enterprises include new technologies in their business model. Digitization becomes crucial as it increases market efficiency.

Companies are starting to create various types of applications and solutions that are designed to facilitate communication with customers or help in the processes of managing internal processes and improving them. A good example is banking or e-commerce - they adapt new technologies the fastest. In their case, investments in digitization are long-term and short-term goals.

Digitization - a condition of survival for small and medium-sized businesses

Micro, small and medium-sized enterprises constitute as much as 99% of all enterprises in the entire European Union. According to the report "Digital Technologies as a Basis for Action: Europe Digitally Driven: Europe, many SMEs during the Covid-19 pandemic built a so-called "Digital resilience". This means that most of these companies have started to adopt effective digital tools and services widely to help them survive and strengthen their business.

This allowed them to organize quickly, maintain most of their pre-Covid-19 revenue, increase flexibility, and hire more employees. Taking advantage of the possibility of digitization during a pandemic has many benefits even in the distant future after it ends. This will allow businesses to survive and adapt to potential future crises.

What can your company gain from this?

The research entitled “Barriers and trends. Technological transformation of companies in Poland taking into account the human/employee/consumer perspective "carried out in February this year for the Humanities Institute shows that as many as 78% of medium and large enterprises are currently at the stage of digital transformation, and 36% of them are already at an advanced stage of changes.

Moreover, managers (86%) and employees (82%) admitted that the efficiency of their work increased thanks to the digitization of processes and internal communication. When it comes to the most digitized departments in the company, in most cases these are accounting and HR departments.

Benefits of digitization:

1. Better communication within the company - especially recently, where work in a remote model has become an increasingly frequent phenomenon, digital knowledge for internal communication has become necessary for proper work and better organization.

2. Improving customer service processes - nowadays, the fastest way to contact the customer is via the Internet. Therefore, the client expects that the given company will be able to handle it online as much as possible. Digitizing your business will certainly make it easier.

3. Streamlining all bureaucratic processes - and even eliminating what after some activities.

4. Data security - digitization of all data and storing them in the cloud is a guarantee that they will be safely stored. Information on paper is always at risk of being damaged, lost, and many other random factors. The data is also more convenient to use through digitization.

5. Lower office maintenance costs - this is the second benefit of keeping data in the cloud. It seems that maintaining paper documentation is a simple matter, but in reality, the costs associated with it can be really high. These costs include, among others: printing a paper version, a place specially designed for storing collections, maintaining an employee responsible for archiving these documents.

6. Increased employee productivity - thanks to the digital transformation of the company, the number of online solutions increases - that is, solutions that are usually faster and improve work. It is i.a. fast and efficient handling of documents, as well as sharing, sharing, and archiving them.

7. And, most importantly, Automation - all activities so far performed manually, thanks to digitization and available programs, can become fully automated processes, which will help optimize work efficiency in the company.

Still, many companies do not trust digitization. Why?

According to Radosław Frańczak (EY Partner, CESA Consulting SAP Leader)

> “(...), nearly one in five respondents believe that the implementation of the cloud in their enterprise is not necessary”.

For many Polish entrepreneurs, a huge barrier to the implementation of various digital solutions in the company is certainly the lack of trust. This is declared by 29% of companies, according to the EY Polska study "Digital transformation of companies 2020". Another barrier is high costs (according to 24% of companies) and the belief that there are no solutions tailored to the needs of their company on the market (13% of companies). 13% of companies do not use digitization due to resistance from management, and 9% of companies due to resistance and lack of conviction on the part of employees.

If your company is one of the 13 percent who believes that the market does not have a solution tailored to the needs of their business - well, maybe it's true - there is no perfect solution on the market for you and your business. Which does not mean that such a solution cannot be created.

We,  Qarbon IT, are specialists in creating dedicated solutions for companies. Tailored software is something we do every day. If you want to digitize processes in your company, we are here for you! We take into account your needs and requirements so that you are one hundred percent satisfied with the final result. Creating dedicated software will help you improve internal processes in the company, stay ahead of the competition, or increase the interest of potential customers.

Check what we do here. Learn more about our services and take advantage of a free consultation! If you want to see what we've done for our previous clients, check out our portfolio.

Digitization as a chance for success

We present three examples that prove that digitization in Poland is developing successfully, creating the future of the state and its economy:

1.The Polish branch of Cybercom and mobile applications as an export product

It is here that two key mobile applications were created - and Service Location, which is part of the Finnish e-government platform and is still being developed and improved. is an app that provides Finnish citizens with official documents on their mobile devices. Service Location is, in turn, a database that contains all information about public services available in Finland, combined with the augmented reality module.

The app shows the user the locations of places such as offices on the map, it also contains information about libraries, swimming pools, sports fields, parking meters, and many more!

2. Warsaw University of Technology in the cloud

It is one of the better and larger renowned universities in Poland, where over 36,000 people study. The university has 19 faculties and as many as 48 fields of study. To improve the internal processes of the University of Technology, the university has introduced its own, fully personalized IT system, which is designed to, among others, supporting accounting and financial processes, project management, sales, distribution, mass settlements with students, and many others. This solution was created by specialists from the Polish SAP branch with the help of SI-Consulting as an implementation partner. Thanks to it, financial reports are generated as much as 10 times faster, but the flow of information has become much safer than the previous, "paper" system.

3. The Polish branch of Capgemini and their friendly chatbots

Experts from this branch develop chatbots for call center branches around the world. They create and "train" artificial intelligence so that they understand the context and intentions of the user's speech. The chatbot created by Capgemini has the skill of good manners and caring, which, unfortunately, is often missing in the traditional form of call centers. Chatbots have a prepared sentence of dialogues and statements, social knowledge related to social interactions, and integration with communication channels in the company.

Don't be afraid of digitization!

The last campaign with subsidies for small and medium-sized enterprises, ie the "Grant for Digitization", showed that the Polish market wants to develop in this direction. Thanks to it, many companies have realized how big a chance in their business development can be brought by digitization. It's worth using it.

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Team Augmentation- Benefits!

January 26, 2023
15 min read

If you are the owner or manager of a company and you are looking for qualified programmers for your internal software team - you should consider Team Augmentation. It is a type of  IT outsourcing in which specialists are hired for a given project to push the work forward and increase the effectiveness of the team.

It may be hiring external programmers for one task/project, but it does not have to end only with this - staff augmentation is also long-term cooperation.

So why the concerns about outsourcing programmers?

As a software development company with experience in the Polish and foreign markets, we notice a tendency towards different concerns of our potential clients when it comes to outsourcing. Where does this aversion come from? We've gathered the most common concerns in this article. We confront them and prove that they are completely unnecessary. When you finish reading this article, you'll find that IT outsourcing is a great solution for your business as well!

Is IT augmentation a good choice

Team Augmentation is all about benefits!

Of course, as the owner of the business, it is your responsibility to keep things running smoothly. Therefore, it is understandable that you may have various fears and doubts about the solution that Team Augmentation is. We, however, hurry with explanations and reassure you - Team Augmentation has many benefits!

The most common concerns are...

Team Augmentation is a huge cost!

And we say - employing your internal employee, or, moreover, a whole team of internal programmers for the company is a huge cost - which WE TAKE ON OURSELVES!

We do not want to be groundless, so to convince you of the high costs involved in completing and maintaining a team within the company, we present specific numbers.

- First thing first, preparation of the workplace.

It may seem trivial, but every programmer working in your company needs his own position with new hardware so that his work is fast and effective. When we say "position", we mean all the equipment - computer, monitor, keyboard, mouse, desk, comfortable chair, etc. Additionally, it is also worth looking at the additional costs related to the maintenance of the entire office - the more programmers inside the company, the bigger the space needed.

If you choose to outsource programmers, you do not have to worry about ensuring working conditions in your office - programmers work remotely, from workplaces in our company, or their own home. We take care of the equipment costs. Desk, computer - it's all on our side!

The costs that you will save with equipping a workplace for one employee are about 2 600 USD!

- Secondly, the recruitment process.

The recruitment process itself is associated not only with enormous costs, but also a lot of time devoted to it. To find the right employee, you need to post an advertisement on various portals, which already involves costs. Finding the right candidate is also a lot of time - you should have an interview and conduct preliminary tests to check his knowledge and skills.

This is also followed by the costs of remuneration of all persons involved in the entire process and technical persons carrying out the recruitment itself - i.e. not only the HR department but also very often a programmer or several programmers who coordinate the recruitment tests. At the stage of hiring a suitable candidate, there are a lot of formalities, such as contracts, implementation, etc.

It is also worth adding that there are a lot of candidates for the position of programmer - the IT market is bursting at the seams these days - but not all of them are your potential Coding Master. You will get a lot of Junior CVs, and even completely inexperienced people who try their luck wherever they find an opportunity. And this is associated with tedious work, where, unfortunately, you also have to sort out the potential champion from (of course ambitious!), but still less experienced candidates.

By using outsourcing services, you have the guarantee that we provide you with only proven and experienced programmers. If you need one developer or maybe a whole team - We will give you what you expect! If your project is complex and complicated, we provide our best specialists. If you are a client from abroad - we will provide programmers with very good English.

If you are looking for a backend developer - we will choose a real magician! The entire recruitment process is shortened to a minimum - Your need is to expand the team, so you contact us and explain who you need and what exactly you care about, and we deliver our candidates as soon as possible - it is always a process no longer than two weeks.

The costs that you will save on the recruitment process of one employee are about 7 800 USD!

- Thirdly, employee benefits.

Nowadays, every modern company wants to take the best care of its employee. All benefits are, besides the salary and development opportunities, one of the most attractive aspects that an employer can offer. A sports card is practically a standard, and many companies also offer other benefits, such as courses, training, providing additional equipment needed for work - companies outdo each other with ideas - free parking at the company, tennis court, table football, premium account on Spotify or some audiobook platform.

It is also a huge cost that you as an employer allocate to internal employees. When outsourcing programmers, these costs are also not on your mind - we will take care of the outsourced programmers so that they will not run out of anything :)

The costs that you will save on employee benefits of one employee are about 300 USD!

- Fourthly, company events.

This can also be considered as sort of the company benefits, but it is a larger venture in terms of organization, so we take it into account as a separate point. An integration party can be huge - depending on the place and additional attractions - whether it is catering, DJ, event shows, and the number of invited people. All that is usually paid by the employer.

The costs that you will save on company events for one employee are about 780 USD!

- Fifth - private medical care.

The health of your employees is very important - and expensive ;) That is why we also take it upon ourselves, providing outsourced programmers with the entire package of medical care.

The costs that you will save on private medical care for one employee are about 220 USD!

- Sixth - paid leave.

When we are already on the topic of health - the well-being, physical and mental rest of your employees is extremely important as it increases efficiency and improves the atmosphere in work. Financially, these costs are comparable to the entire recruitment stage. And this is also what you save by choosing Team Augmentation services. We pay for the programmer's leave. You, as our customer, do not bear any costs.

The costs that you will save on paid leave for one employee are about 8 700 USD!

- And last but not least- training budget.

If you want your team to develop and gain new competencies so that your company can move forward, it is worth investing in some courses for the employees. We believe that if an employee is hungry for new knowledge, it is worth providing him with it.  So we provide all training for our developers - thus relieving you from additional costs.

The costs that you will save on the training budget for one employee are about 1 300 USD!

-The only thing you pay for is the competence of the entire company - and that is priceless!

To sum up, all costs which you will save, thanks to us, is 21 700 USD!

Check our team augmentation services

It's too much paperwork!

We are immediately confronting with these fears - Team Augmentation is ZERO BUREAUCRACY.

As we mentioned above in one of the paragraphs - we have reduced the entire process to a minimum. You have a need right now - you immediately get a solution from us!

The saved time is the main difference between simply recruiting an internal team and Team Augmentation.

1. You tell us about your needs - how many programmers and technical people do you need.

2. After the initial phone/e-mail conversation, we send you blind CVs, information about the availability of developers, and their hourly rates.

3. We sign the NDA if you need one.  

4.  After determining which specific developers suit your needs, we arrange a meeting with a technical person from your team to clarify all the details related to the project.

5. If the selected developer is available at this moment, he can start working on your project immediately.

It's just one signature for one simple contract!

The developer will be an outsider!

"An outsider" is a rather unfriendly term. It immediately associates with the word "intruder". But after all, an outsourced programmer is no intruder! Our developer is not a random stranger - he is our trusted employee and specialist in writing code.

The truth is that most people want to work remotely these days, and so far everything is going in that direction. The times of the pandemic have proved to us that employees feel comfortable in remote work conditions and this model is increasingly appearing in many companies around the world - also in Poland, it has gained enormous popularity.

The person who joins your team is simply a developer working remotely - but with the same commitment as others. He will be present at all meetings - both organizational and project. He will just be part of your team.

It's too much of a mess for my company!

We met with clients who were very convinced of the Team Augmentation solution - even too much. So much so that they started using it from many different companies. In one project there was a frontend developer from Company A and a backend from Company B, and when another FullStack Developer was needed, the company used the services of Team C’s augmentation.

In fact, it may become an unnecessary mess. So when a client tells us that he doesn't want to take another developer from us, we say - TEAM Augmentation, as the name suggests - it's a TEAM. If one programmer is more harm than good for you - we have a solution for that!

You can give us the entire project for execution. We will provide you with the entire team - from the Project Manager through developers to Tester. We give you our guarantee that the project will be carried out efficiently and meticulously. In this way, you pass on the entire "mess" to us, and you can focus on other projects and the development of your business.

Team Augmentation is a necessary evil!

Unfortunately, some customers treat Team Augmentation as a necessary evil. First, they try to put together an internal software developers team, and only when it turns out to be too difficult, they decide on Team Augmentation, treating it as their last resort.

However, Team Augmentation is not a necessary evil or the worst possible option. It is a solution to many problems in the company so that your business can continue to develop.

By deciding on Team Augmentation services, you are choosing a responsible development team with whom you sign a contract. After signing in, you get access to appropriately qualified people. Our programmers have experience in many projects, and when you put your work in their hands, you receive a guarantee of the highest quality. Team Augmentation is also flexible - we adapt to your project and we implement developers who adjust to your schedule and work style.

Additionally, when the project comes to an end, you have no problem with what to do next with outsourced developers. You don't have to think about which project to delegate them to next. This problem solves itself.

Of course, if such cooperation has turned out to be beneficial for you, Team Augmentation also offers long-term cooperation. We don't have to part after one project! If this is the right solution for you, our programmers can be at your disposal for many months or even years!

Hire custom developers

As you can see, there’s nothing to worry about!

All fears are usually caused by unawareness or simply concern for your own business. Will everything go well for sure? Will developers integrate with my team? Isn't it easier to hire your own employee?

We hope this article has cleared all your doubts about Team Augmentation services. If you have any other questions, feel free to contact us HERE and we will quickly answer.

In conclusion, with Team Augmentation you not only save a lot of costs that you would spend on your internal team, but you also get a guarantee of quality and peace of mind - we will take care of your project, while you can focus on developing your business. We provide zero bureaucracy - only one signature for one simple contract.

Team Augmentation is also a solution for YOUR company! If you need reliable programmers - contact us today!


How to choose a programming company?

January 26, 2023
15 min read

Your company wants to be developed and to be more and more modern. You have an idea for a program design, an app, a modern platform, or a website. There is just one step that is between you and realizing the idea – finding the right programming company, which is going to accept the job, and, what’s even more important, is going to deal with it fast and to the highest standard.

The IT industry is developing at a dizzying pace, due to which there are plenty of options. The choice might even be too big! There are plenty of agencies, software houses, and freelancers offering their services to potential customers. Everyone advertises themselves as the best and tries to convince you that they are the number one in the programming world. How to choose? It’s worth starting with a couple of questions that are going to help us to establish what our expectations are.

What exactly do you need?

You should start by thinking about your needs. Ask yourself a question – what does your business need?

Do you want to create an advanced mobile app in which you’re able to spend a bigger chunk of your budget?

Or maybe you’re just thinking about refreshing the page?

Maybe it’s an online shop, with a computer and a mobile version? Think about the money you’re able to spend on your goal and how much time you have. The more specific you are, the fewer companies you’ll have to choose from.

Additionally, specifying the characteristics of the project even after choosing the right software house will also be helpful. We need to establish what our expectations are so that the programmers will be able to ensure that we’re satisfied with the result.

A programming company will know exactly what to do so that the finished product will not differ from what you expected. If you don’t specify what you want, you may ask for project X and get project Y.

Imagine commissioning an artist to paint something for your living room. It’s supposed to not only match the interior but also look just breathtaking. Of course, even if you’ve shown the picture of your living room to the artist and specified your expectations, it’s possible that your vision will be different that the idea of the painter. When you said: “a breathtaking painting which matches my interior” you were thinking about a seaside landscape, but you got a canvas with a blue elephant.

A similar situation may happen in a software house. Both sides are frustrated – the commissioning and the commissioned. You, because you expected a different effect and the company because they did the job according to your guidelines. Now, if you want to make some changes and corrections, you’ll need to reckon with waiting longer and paying more.

Think about your budget! It’ll make the cooperation way easier!

When you get in touch with the programming company of your choice, it’s worth to think how much money you’re ready to pay. What’s more, it’ll allow the software house to establish if it’s enough to create a project which will satisfy you. Be honest and clear while speaking about the budget.

When it comes to the offers from various software houses when you need an executor, you need to remember that price is not always the best factor. After getting a set of offers, the pay rates will probably differ quite a lot. You’ll surely try to compare them with one another, but choosing the cheapest option is not always the smartest. You need to remember that:

-  The better the programmer is, the higher are his competencies and skills, and, consequently, his rates.

-  Higher hourly pay relates to:

- The fact that this hour will be used for good quality, advanced jobs, in contrast to weaker and less advanced programmers.

- The fact that a better programmer will be able to write a more thought-through code that will be the base of a reliable program.

That’s why it’s important to remember that low price doesn’t always mean good quality.

Do some research about programming companies

To do it, use plenty of sources. Create a base of firms that interest you and which meet your technical requirements. Make sure that the software house you choose is trustworthy and perfect for your project.


The advertising of a company very often happens through recommendations. The opinions of people involved in a certain industry seem to be a reliable source of information. A similar situation happens with the recommendations coming from our friends. It’s also the quickest and the easiest way to find a reliable company suitable for our cause. So, when a friend advises you to contact a software house, take it into consideration. It’s worth using the network of acquaintances that you already have because they can help you to verify whether a company is worth your attention or not.

Other customer’s opinions

The internet will tell you the truth. Not always, of course, but in most cases, opinions written online are worth to be taken a look at. Stats prepared by Spiegel Research Center say that 95% of customers use some of the basic recommendations left by other people. Those opinions are often persuasive, too. If a company has more negative ratings than positive, it's better to stay away from it and look for someone else.

Believable portfolio

It’s definitely a key point that should be verified. As a potential customer, we want to know that our project won’t be the first one done by a particular company. A reliable company will have some finished projects in its portfolio. You should pay attention to whether the jobs are similar to yours or at least done using the technology which interests you.

If you want to commission a mobile game, for instance, look for software houses that have had some experience with this topic and not ones that only worked in the medical field and create software strictly for it.

When you’re already in touch with a particular software house, drill them about some of their projects, especially ones they’ve worked on recently. You can also ask about some details of projects similar to yours. Find out how long it takes to finish them, what specialists worked on them, what problems they met, and how they dealt with them.

Project phase

Every programming company, which does its work in a reliable and trustworthy way and delivers projects of good quality, has its project phase thought through. It makes working on a particular project easier and less chaotic due to set phases. It helps to organize the team, due to which the work is more efficient. What is more, the client can sleep soundly knowing what’s the plan and that it’s going to be executed well.

Working on more advanced projects like building a mobile app from scratch, opening an online shop or a more complicated website is a long-term task. That’s why it’s important to have the project phase well thought through and done in writing. Usually, the Project Manager will guide you through the documented implementation process.

They should also inform you about the contact methods the company is going to use with you to keep you up to date with all the changes and eventual problems.

Ways of payoff

IT companies have various methods of payoff. There might be a particular sum for the project as a whole or an hourly pay. With the former, it’s worth checking whether the company sends reports, tests the product, and maintains it after opening.

With the hourly pay, you should ask about the eventual prolonging of the project and if the stakes change. In the end, choose a software house that offers a payoff method that suits you best.

Have a meeting

No matter if in person or online, you need to get to know the software house you want to work with, and emailing is not enough. Select some companies from your base (usually, not more than 2-3 of them) and have a meeting. A live conversation will help you verify the knowledge of the people and whether they’re prepared to tackle your project.

Ask about the team which is going to work is the task – what’s their experience and skills. You might want to ask about a so-called “blind CV,” a resume with no personal data, but with the experience, previous projects they’ve worked on, languages they operate, and other important details. You should also check the hour of work of a particular company because, in the IT industry, those differ from company to company.

Set your goals

Together with the software house, you should set a goal – KPI (Key Performance Indicators). It’ll help with managing work in the future. KPI is a goal that you want to achieve with the finished product. It might be the digitalization of your business, more profit, or customer satisfaction.

It should be established at the very beginning so that the programming company will be able to stick to it at all times while realizing the project. With the finished product in your hands, you’ll be able to compare it with the KPI and see if the goal was met.

Here’s a short cheat sheet about choosing a programming company for the job!

If you’re still not sure how to choose the best programming company for your project, check this short summary out:

We remind you what aspects are especially important while choosing an IT company to cooperate with:

And what questions it’s worth asking to ensure that the cooperation will be satisfactory:

There is a multitude of programming companies on the market. The choice is huge, but we hope that with this article it’ll be easier for you to make the final decision.

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