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Contract Staff Software Engineer-FireFox Layout

Mozilla
RemoteRemote
Contract
Posted Yesterday
C++*CSS*CSS Preprocessors*Debugging*HTML*JavaScript*Multithreading*Rust*Web Standards*

Role Overview

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.

Requirements

Required qualifications

  • Strong C++ (JavaScript and/or Rust a plus).
  • Solid CSS and page-layout knowledge.
  • Strong debugging and optimization in a multithreaded codebase.
  • Able to work independently and lead technically in a large, mature codebase.

Preferred

  • Prior experience in web browser architecture and development.
  • Prior Web standards experience.
  • 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

  • Canada Tier 1 Locations
  • $185,045 - $217,700 CAD
  • Canada Tier 2 Locations
  • $131,400 - $154,600 CAD
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Job Details

LocationRemote
Job TypeContract
Experience LevelSenior Level
EducationBachelor's Degree
PostedNovember 2, 2026 at 12:32 PM

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Contract Staff Software Engineer-FireFox Layout at Mozilla | TechiHub Jobs | TechiHub