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Where can I work after learning Java? A guide to the world of developers for the greenest beginners

Published in the Random EN group
If you have just started learning Java or are still thinking about which programming language to learn, this text is for you. It is much easier to find motivation when you know the end goal. In the vast world of IT, it is easy to get confused - a sea of ​​​​specializations and positions can drive you into a stupor. To prevent this from happening, we talk about the four most popular areas in development and tell you what technologies you need to master. We hope this will help you choose your own development path. Where can I work after learning Java?  A guide to the world of developers for the greenest beginners - 1

Backend developer

A backend developer deals with that part of the application / site / software that is “under the hood”. And this is a lot of different tasks. The essence of the work of such a developer is to create a working combination of "server-application-database" by writing code that runs on a server - physical or cloud. The backend developer is responsible for the logic, proper functioning and good performance of the application. Where can I work after learning Java?  A guide to the world of developers for the greenest beginners - 1

Technology stack

Java, MySQL database, Hibernate library, Spring and Spring MVC frameworks , Docker containerization software , cloud services - AWS, Google Cloud, Azure; Heroku

Tasks of a backend developer

  • Resource architecture design.
  • Formation of the structure of the website.
  • Building the platform and core feature set.
  • Writing algorithms.


The average salary of a backend specialist, according to the Dou website , in Ukraine is about $2,380. June receives from 850 dollars, and the signor - about 4 thousand dollars. But in Russia, according to the Habr survey , the average salary of a backend developer is lower, about $1,900.

Frontend developer

A front-end developer is a programmer responsible for the visual part of a website, application, or software. Do not confuse it with a coder, because the functionality of a frontend developer is much wider. It not only typesets, but also “revives” the made-up image due to pop-up windows, adjusts the work of buttons and interacts with the server part of the application. To work as a frontend developer, you need to master languages ​​such as HTML, CSS, JavaScript. Knowledge of Java will provide the necessary foundation for understanding object-oriented programming. In the future, a person who has the skills of a frontend developer can retrain as a backend developer, and later on as a fullstack developer. So there is room for improvement. Where can I work after learning Java?  A guide to the world of developers for the greenest beginners - 2

Technology stack

HTML, CSS, JavaScript, SASS and LESS metalanguages, Flexbox (one of the CSS modules), JQuery library, Angular and Vue.js frameworks, Git, Node.js software platform.

Tasks of a frontend developer

  • Development of new functionality of the site, application or software and improvement of the old one.
  • Code refactoring to improve performance.
  • An overview of the code sent to the server.
  • Technical implementation of a graphical UI/UX layout created by a designer.
  • Application performance monitoring.
  • Fixing bugs.


According to a Dou survey , front-end developers in Ukraine make about $2,300 on average. Junes can earn from 750 dollars, and seniors about 4 thousand dollars. In Russia, according to a survey by Habr , on average, frontend girls receive about $1,630.

Full stack developer

A fullstack developer is a human Swiss knife in the development world, a multifunctional programmer who can handle both frontend and backend tasks. It is not easy to become such a universal soldier: one must have extensive knowledge and rich experience. Naturally, a fullstack developer can become a specialist who managed to work both on the visual part of the application and on the server side. In addition, he must have a good idea of ​​how these parts interact and what the final project should be like. Where can I work after learning Java?  A guide to the world of developers for the greenest beginners - 3

Technology stack

  • Java + Java Core; apache; JPA/Hibernate Spring (Spring MVC, Spring Boot, Spring REST, Spring Web), Google Cloud, AWS, or Azure JSP (Java Server Pages).
  • HTML layout language and CSS style language; programming languages ​​JavaScript and TypeScript; SASS and LESS preprocessors; jQuery library; Bootstrap framework; Angular/React/Vue.js DOM, AJAX, JSON technologies.

Tasks of a full stack developer

  • Planning, management and implementation of the project.
  • Negotiations with clients.
  • Testing the finished Internet platform and debugging bugs.
  • Quality control of the site or application.
  • Technical support for specialists working on the web service.
  • Working with databases, file systems, cloud storage and network resources.
  • Creation of visual design.


The average salary of a fullstack specialist in Ukraine is about $2,300. In Russia, the average salary of such a specialist is about $1,600.

android developer

Knowing the Java programming language, you can work as an Android developer. Most large companies have apps as an alternative version of the website. In addition, literally every month there are dozens of startup applications, where you can also get a job. A mobile application developer has many tasks and responsibilities at different levels of training, from working on the internal structure to implementing the interface. Where can I work after learning Java?  A guide to the world of developers for the greenest beginners - 4

Technology stack

Java, Android Studio, Android SDK, Git, Retrofit libraries, Moshi, Chuck, Timber.

Android developer tasks

  • Development of mobile applications for Android OS.
  • Interaction with databases and API.
  • Testing and finalization of the software product at several stages.
  • Uploading the finished product to the Google Play app store.
  • Application support and updates.
  • Preparation of documentation and instructions for working with the product.


The average salary of an Android developer in Ukraine is about $2,375. June can count on a salary of $800. In Russia, the average salary of such a developer is about $2,040.

How do programmers work in a team? CodeGym Example

We discussed the specializations of developers, but what does the work of these people in a team look like? Let's tell you how the CodeGym programming team works. First, a little about CodeGym and CodeGym products. They consist of the following parts (this is a simplified structure):
  • server;
  • database;
  • frontend;
  • plugin;
  • Android application;
  • iOS app (not yet released).
Such a schematic division of the service into parts is necessary in order to understand what the developers are doing, since the CodeGym team has frontend, backend, fullstack, and mobile. Frontend developers develop the visual part of the service, improve the speed of loading the quest, add new language versions to the site (for example, Ukrainian and English versions of the interface have recently appeared on CodeGym). Backend developers develop the server part of the product, including adding new functionality to the site. For example, CodeGym recently translated notifications into different languages ​​and began to determine the user's country during registration. Also, back-end developers are setting up the site in conjunction with three-way APIs. What does it mean? Why write something of your own, spend time and money on writing, testing and supporting, if there are already written solutions that suit the service, and all you have to do is start using them. In this case, back-end developers write code that helps the site interact with third-party APIs (if the program is considered as a black box, then the API is a set of "handles" that are available to the user of this box and which he can turn and pull - ed.) and customize its operation. Full stacks are either front-end or back-end tasks, or tasks that affect everyone, for example, automatic updating of comments - if someone writes a comment on the page, it will be displayed without reloading the page. Android and IOS developers develop and maintain mobile applications (IOS is not yet released). A tester in CodeGym checks new features, checks for bug fixes, looks for bugs and monitors the quality of the product. We add that although each developer has his own pool of tasks, there are also general planning and discussions of tasks, since the fulfillment of a large goal is always tied to a large number of specialists. Have you already decided where you want to work after graduation? We are waiting for your comments. Where can I work after learning Java?  A guide to the world of developers for the greenest beginners - 5