FREE ACCESS
5,000–10,000 jobs/day
See all jobs on JobTailor
Search thousands of fresh jobs every day.
Discover
- Fresh listings
- Fast filters
- No subscription required
Create a free account and start exploring right away.
Tech Stack
Tools & technologiesAndroidJavaScriptOpen SourceRust
About the role
Key responsibilities & impact- Implement and maintain WebExtensions APIs and Addon Management, balancing power, safety, and performance, as well as user interfaces in Firefox.
- Debug and fix issues affecting extensions in Firefox.
- Collaborate with product managers, QA, and the AMO engineering team to deliver features end-to-end.
- Contribute to Mozilla-owned extensions and system add-ons.
- Participate in open source workflows: code reviews, pull requests, and discussions in Bugzilla/GitHub.
- Support extension developers by helping diagnose issues and improving tooling/documentation.
Requirements
What you’ll need- 4+ years of professional experience in software development
- Strong proficiency in JavaScript, DOM APIs, HTML, and CSS
- Familiarity with modern browser architecture and debugging tools
- Experience with API design and integration
- Ability to navigate and learn from large codebases
- Strong communication skills and experience collaborating in distributed teams
- Bonus points for:
- Experience with Firefox internals, C++ or Rust
- Familiarity with Android or GeckoView development
- Knowledge of web security principles
- Contributions to open source projects, especially in browser or extension development
Benefits
Comp & perks- Generous performance-based bonus plans to all eligible employees - we share in our success as one team
- Rich medical, dental, and vision coverage
- Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
- Quarterly all-company wellness days where everyone takes a pause together
- Country specific holidays plus a day off for your birthday
- One-time home office stipend
- Annual professional development budget
- Quarterly well-being stipend
- Considerable paid parental leave
- Employee referral bonus program
- Other benefits (life/AD&D, disability, EAP, etc. - varies by country)
ATS Keywords
✓ Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
JavaScriptDOM APIsHTMLCSSAPI designAPI integrationC++Rustweb security principlesbrowser architecture
Soft Skills
strong communication skillscollaborationproblem-solvingdiagnosing issuesdocumentation improvement