M
Canada· Remote
C$120K – C$196.6K/yr · Jobiba est.Estimated from 192 similar postings (high confidence) — not stated by the employer.
● Strong current hiring demand for this role
JavaScriptAI
M
Pay vs market · Top quarter
This job's pay (CA$201,373 a year at the midpoint) is higher than about 75% of 192 salary-listed Software Engineer jobs in Canada in the last 12 months; their median is CA$158,000.
Role overview
Job 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, 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 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
More like this
About this listing
- Source: Mozilla's official careers site · still listed there on 11 Nov 2026
- Posted 22 Sept 2026
Jobiba never charges you to apply. Never pay to apply or share OTPs, card or bank details.
Role market pulse
How Software Engineer demand looks in Canada
Live jobs
324
Posted 30d
196
30d movement
+154.5%
Remote share
37%
Salary listed
77.5%
Salary trend 1Y
Not enough history
What they are looking for
Skills & requirements
Department · Firefox
Hiring company
Mozilla
Technology
The independent browser that has your back. Firefox blocks trackers, has a free built-in VPN, puts you in control of AI, and never sells your personal data.
Related opportunities
Similar active roles
Relevant, currently active roles for this market.
M
Canada· Remote
C$145.8K – C$186.2K/yr
● Strong current hiring demand for this role
V
Toronto, Ontario, Canada· Full-time· Remote
C$120K – C$196.6K/yr · Jobiba est.Estimated from 192 similar postings (high confidence) — not stated by the employer.
● Strong current hiring demand for this role
TypeScriptMongoDBRedisAWS
P
16 days ago
Toronto, Ontario, Canada· Full-time· Remote
C$122.8K – C$180K/yr
TypeScriptPythonReactPostgreSQL
T
7 days ago
Toronto, Ontario, Canada
V
PythonAWSAzureGCP
🔔 Get job alerts
New Software Engineer-FireFox Layout jobs in Canada, straight to your inbox.
No spam · Unsubscribe anytime