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Contract Staff Software Engineer-FireFox Layout

MozillaCanadaContractSalary not listed · Typical pay in CanadaPosted Nov 6, 2026

Mozilla has an opening for a Contract Staff Software Engineer-FireFox Layout as a remote role open to applicants in Canada. The listing describes it as a contract, staff/principal-level position.

Written by Dev Global Jobs

DGJ summary of this job

Our own short read of this listing, built only from the facts it gives. The employer’s original text follows further down.

Mozilla has an opening for a Contract Staff Software Engineer-FireFox Layout as a remote role open to applicants in Canada. The listing describes it as a contract, staff/principal-level position.

The advert mentions JavaScript, Rust, C++ and CAD among the skills and tools for this role.

The employer does not state a salary in this listing; DGJ Insight below shows an official pay benchmark for the place where one exists.

Dev Global Jobs found this job on Jobicy on Nov 6, 2026.

Employer
Mozilla
Location
Remote (Canada)
Job type
Contract
Level (from the title)
staff/principal-level
Pay
Not stated by the employer
Found
Nov 6, 2026 on Jobicy
Employer text
204 words, about 1 min to read
Skills named in the advert
JavaScriptRustC++CAD
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  • Mirror the skills the advert names (JavaScript, Rust, C++ and CAD) in your CV where you really have them; applicant tracking systems look for these words.
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Only on Dev Global Jobs

DGJ Insight

Our own data about this role and place, from official statistics and our live job index.

Updated Nov 6, 2026
Pay benchmark
Average wage, Canada
CAD 85,588 average / year

Source: OECD Average annual wages, 2025

Job description

About the role

Full text from the employer, as published on Jobicy, arranged into sections. Nothing added or removed.

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.

01Responsibilities

  • 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.

02Definition 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.

03Required 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.

04Preferred

  • 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.

05Hiring Ranges

Canada Tier 1 Locations

$185,045-$217,700 CAD

Canada Tier 2 Locations

$131,400-$154,600 CAD

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