Matthijs Groen
Consultant at Kabisa ICT
Maastricht, Limburg, Netherlands
Summary
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Rockstar🎓
Top SchoolMatthijs Groen is a seasoned consultant and full‑stack web developer with 15 years of experience designing and building business‑critical web applications, especially rich JavaScript/HTML5 front-ends and robust backend systems. Based in Maastricht, he combines craftsmanship in database and algorithm design with hands‑on work in Ruby on Rails, Java and modern JS, delivering production solutions for clients like Philips Research, Signify and ASML. An active open-source contributor, Matthijs has improved testing frameworks and game engines—enhancing Konacha’s test coverage and adding WebGL rendering and particle controls to Crafty.js—showing a talent for both tooling and graphics. He enjoys tinkering with web-based game development and is currently focused on building a web adventure game engine, bringing playfulness and performance tuning into professional projects. Known for pragmatic engineering and strong test automation skills, he blends attention to detail with an appetite for creative technical challenges.
15 years of coding experience
17 years of employment as a software developer
Bachelor of Science, Hogere Informatica, Bachelor of Science, Hogere Informatica at Hogeschool van UtrechtHAVO, HAVO at Scala College
Stackoverflow
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Github Skills (18)
webgl10
javascript10
testing10
coregames10
rspec10
graphic10
videogames10
ruby10
mochajs10
guard10
tmux10
test-automation10
chai9
rails8
ruby-rails8
Programming languages (12)
Github contributions (5)
craftyjs/Crafty
Nov 2015 - Jan 2018
JavaScript Game Engine
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:14 commits, 11 PRs, 1 push in 2 years 1 month
Contributions summary:Matthijs primarily contributed to the Crafty.js game engine by addressing bugs and enhancing the core functionality of the WebGL and graphics rendering systems. Their work involved modifying shaders, optimizing the removal of WebGL entities, and implementing features like pausing for particles and delays. The user also fixed a color parsing issue and added properties for controlling tween and delay speeds, improving overall game control.
gamegamesgamedevjavascriptjavascript-game-engine
jfirebaugh/konacha
Nov 2012 - Jul 2014
Test your Rails application's JavaScript with the mocha test framework and chai assertion library
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:8 commits in 1 year 8 months
Contributions summary:Matthijs focused on enhancing the test suite for the Konacha JavaScript testing framework. Their contributions included writing new tests, refactoring existing tests, and improving test coverage. Key areas of focus were testing custom paths, session reuse, and run mode parameters within the testing framework's controller and runner components. The user ensured the correct behavior and functionality of Konacha across various configurations.
assertion-libraryrailstestingjavascriptrails-application
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