# Contract Staff Software Engineer-FireFox LayoutMozilla131k–218k CADContractremote· leadCanadalinuxandroidjavascriptrustListed via Jobicy · posted 6 Oct 2026. The application happens there, not on DevConnect.
Apply on Jobicy## DescriptionYou 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 doneA 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- 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 CADCanada Tier 2 Locations$131,400—$154,600 CAD
Contract Staff Software Engineer-FireFox Layout in Ottawa employer: Devconnectplatform
Mozilla is an exceptional employer that fosters a collaborative and innovative work culture, particularly for the Contract Staff Front End Engineer role. With a focus on meaningful projects like enhancing Firefox's web conferencing capabilities, employees benefit from competitive compensation, flexible remote work options, and opportunities for professional growth in a supportive environment that values open-source contributions and diverse perspectives.
