Filip Witosz
Javascript Developer - Apps, Games And Web at Contractor (Own Business)
Ostrava - město, Moravia-Silesia, Czechia
Summary
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SeniorFilip Witosz is a versatile JavaScript developer from Ostrava with over 10 years of experience building apps, games and web products, blending front-end craftsmanship with backend and DevOps practices. As a freelancer and former in-house developer, he has shipped complex React/TypeScript applications, single-page experiences, CMS integrations and game-audio enhancements for the open-source Babylon.js engine. He cares deeply about usability, performance and test-driven development, and often helps teams adopt React best practices and cleaner, more reusable code. Filip’s background spans product design, consulting and even infrastructure support, giving him a rare full-stack perspective that speeds problem solving and delivery. Notably, his open-source work improved audio spatialization in a major JavaScript 3D engine, showing attention to both user experience and code quality.
10 years of coding experience
1 year of employment as a software developer
English
Stackoverflow
1,785reputation
208kreached
27answers
22questions
Github Skills (19)
webgl10
javascript10
game-engine10
game-dev10
typescript10
babylonjs10
typescript-types10
typescripts10
game-development10
3d9
web-audio-api9
html6
neat6
react6
bourbon6
Programming languages (9)
Github contributions (5)
BabylonJS/Babylon.js
Aug 2019 - Sep 2020
Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:8 commits, 2 PRs, 9 comments in 1 year 1 month
Contributions summary:Filip's primary contributions focused on enhancing the audio functionality within the Babylon.js game engine. They implemented a feature to allow users to customize the position of the audio listener, enabling more control over sound spatialization. The user also addressed code quality issues by fixing linter errors and adding a missing property type declaration. Furthermore, they ensured the code's robustness by checking for the existence of the `audioEngine` to prevent errors when using the `NullEngine`.
gameopen-gameenginebabylonjavascript
qoretechnologies/toolkit-react
Apr 2024 - Mar 2025
Contributions:8 reviews, 57 PRs, 188 pushes in 10 months
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