Senior Software Engineer – WebGL, Color, Graphics

Mozilla

. Diagnose and fix WebGL bugs in Gecko using C++/Rust, including security bugs .

Posted 9/22/2026contractRemote • Canada, United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in diagnosing and fixing WebGL bugs using C++ and Rust, with a strong focus on security and debugging within multithreaded environments. Proficient in managing bug queues and delivering tested code in collaboration with graphics module owners.

Highest-signal resume keywords

C++ ProgrammingRust ProgrammingWebGL ExperienceMultithreaded DebuggingSecurity Mindset

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

C++ ProgrammingRust ProgrammingWebGL ExperienceMultithreaded DebuggingSecurity ResearchFuzzingBug DiagnosisCode ReviewTest WritingIPC Architecture

Tools & Technologies

GeckoGraphics Module

Industry Keywords

Browser EngineSecurity BugsSandbox Architecture

Tech Stack

Tools & technologies

RustC++

About the role

Key responsibilities & impact

Diagnose and fix WebGL bugs in Gecko using 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
Deliver reviewed WebGL fixes and new code landed with tests

Requirements

What you’ll need

Strong C++ (Rust a plus)
Graphics / GPU experience, ideally WebGL
Security mindset and comfort with sandbox and IPC architectures
Strong debugging in a multithreaded codebase
Prior browser-engine / Gecko experience preferred
Security research or fuzzing experience preferred

Benefits

Comp & perks

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