A JR game developer is a professional who is starting his career in the area of creating games for different platforms, such as PC, console, mobile, web, etc. He is responsible for designing, programming and testing games, using tools such as game engines, frameworks, libraries, etc. He is also responsible for ensuring the quality, security, and performance of the code.

A JR game developer may do various tasks such as:

- Develop, test and maintain game code using programming languages such as C++, C#, Java, Python, etc.;

- Create the basic concepts of the games, including the story, gameplay, characters, scenarios, etc.;

- Create and apply visual elements of games, such as graphics, animations, sound effects, music, etc.;

- Create and integrate APIs to communicate games with external services or other system components;

- Use version control tools, such as Git, to manage source code and collaborate with other developers;

- Use automated testing and code quality tools to verify code functionality, coverage and compliance;

- Use game frameworks and libraries, such as Unity, Unreal Engine, Phaser, etc., to facilitate development and increase productivity;

- Use agile methodologies, such as Scrum and Kanban, to organize teamwork and deliver value to the customer;

- Learn and apply emerging technologies such as virtual reality, augmented reality, artificial intelligence, etc. to improve user experience in games.