Contract Staff Software Engineer-FireFox Layout

Remote Canada

You will take on the ongoing maintenance and routine engineering work in Firefox’s Layout area (CSS, page layout, APZ, text, images). Working independently at a tech-lead level, you keep the Layout code healthy.

Responsibilities

- Own day-to-day Layout maintenance: fix bugs and regressions, keep tests green, handle incoming issues.
- Diagnose and fix Layout problems across platforms (Windows, macOS, Linux, Android).
- Carry code review and routine upkeep so the FTE engineers can focus on other mission critical projects. .
- Join planning and standards / web-compat meetings as needed.

Definition of done

A healthy Layout area, backlog and regressions kept down,



with the team’s senior engineers freed to focus on critical Performance and Security issues.

Required qualifications

- Solid CSS and page-layout knowledge.
- Solid debugging and optimization in a multithreaded codebase.
- Able to work independently and lead technically in a large, mature codebase.

Preferred

- Mobile web development, profiling and debugging skills a plus .
- Proven experience in utilization of AI tools (Claude, ChatGPT, etc.) in the investigation, development, debugging, and/or testing of code is a plus.

Hiring Ranges:

$185,045 - $217,700 CAD

$131,400 - $154,600 CAD

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📌 Contract Staff Software Engineer-FireFox Layout (Canada)
🏢 Mozilla
📍 Canada