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Contract Senior Software Engineer - WebGL (Color/Graphics) at Mozilla

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Mozilla

Contract Senior Software Engineer - WebGL (Color/Graphics)

  • Remote Canada
  • Posted on Sep 22, 2026

The role

You will diagnose and fix WebGL bugs in Gecko and improve its functionality and security within the Firefox graphics team.

Responsibilities

  • Diagnose and fix WebGL bugs in Gecko (C++/Rust), including security bugs
  • Write tests, work through code review with graphics module owners, and land fixes, with uplifts where needed.
  • Keep the ongoing WebGL bug queue under control

Definition of done

Reviewed WebGL fixes and new code landed with tests

Required qualifications

  • Strong C++ (Rust a plus).
  • Graphics / GPU experience, ideally WebGL.
  • Security mindset, and comfort with sandbox and IPC architectures (WebGL is a security target).
  • Strong debugging in a multithreaded codebase.

Preferred

  • Prior browser-engine / Gecko experience.
  • Security research or fuzzing experience.