Welcome to the world of HTML5 games! Are you ready to play with us?


HTML5 Game Developer

Are you an ambitious game developer with a passion for casual games? Can you setup code in a flexible and stable way? Do you love polishing and adding juice to games? Do you like working in a small team and develop high quality games? And do you want to contribute to online games that are played by millions around the world?

Than we have an excellent career opportunity for you!

With Flash disappearing and the overcrowded app-stores, HTML5 is now one of the fastest growing game platforms around. And as a next step after our single player games, we have started developing multiplayer, social and Instant games. We are therefore looking for a Mid-Level Game Developer to strengthen our Studio and help us realize our international growth ambition.

Your key responsibilities:

  • Setup and develop HTML5 games from start to live maintenance;
  • Take responsibility for delivering games with robust and stable code;
  • Support the Lead Developer by designing and documenting the game’s architecture;
  • Help junior developers by reviewing their code and coach them;
  • Contribute with the maintenance and development of new internal tools;

Your profile:

  • Pro-active and used to taking ownership and responsibility;
  • Not afraid of debugging and optimizing code;
  • Good team player and supportive to other departments;
  • Excellent social, communication and presentation skills;
  • Fluent English speaker and writer;

Your qualifications:

  • At least 2 years of relevant experience in the games industry;
  • Fully comfortable with Agile development processes and tools;
  • Experienced with Git and adept of GitFlow;
  • Familiarity with OOP, UML and Design Patterns;
  • Experience with HTML5 games, JavaScript and Typescript is desirable;
  • Experience with mobile games in Unity and/or multiplayer games is a plus;


We offer

  • A highly dynamic job with a competitive salary
  • Company pension plan and travel cost compensation
  • Optional company stock plan participation
  • Health care insurance compensation
  • An attractive office location in the center of Amsterdam
  • An open, informal and international company culture

Your application:

Candidate contact only – no agencies

About CoolGames

CoolGames is the leading HTML5 games developer and publisher in the world. Alongside developing native quality HTML5 games with high profile IP’s such as Tetris, Pac-Man, Snoopy and Miffy, we also distribute games globally reaching millions of players each month. Our in-house developed title Jewel Academy is the world’s most successful match-3 game ever released in HTML5.

BoosterMedia was founded in late 2009. In early 2016 we joined forces with Tingly Games and became what is now CoolGames. We have an ambitious and innovative team with over 50 colleagues from all over the world. Our headquarters and studio are located in the center of Amsterdam, The Netherlands. The company also has an office in Tokyo, Japan, and a senior representative in San Francisco, USA.