At a Glance
- Tasks: Maintain and enhance Firefox's Layout area, fixing bugs and optimizing performance.
- Company: Join Mozilla, a leader in open-source technology with a collaborative spirit.
- Benefits: Competitive salary, remote work flexibility, and opportunities for professional growth.
- Other info: Dynamic environment with opportunities to lead and innovate in a mature codebase.
- Why this job: Make a real impact on web technology while working with cutting-edge tools.
- Qualifications: Strong C++ skills and solid knowledge of CSS and page layout required.
The predicted salary is between 135000 - 165000 $ per year.
# Contract Staff Software Engineer-Fire Fox Layout Mozilla131k–218k CADContractremote· lead Canadalinuxandroidjavascriptrust Listed via Jobicy
- posted 6 Oct 2026.
The application happens there, not on Dev Connect.
Apply on Jobicy## Description 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, mac OS, 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- Strong C++ (Java Script 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, Chat GPT, 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 #J-18808-Ljbffr
Contract Staff Software Engineer 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.
