← Zurück zur Liste
Stelle
· Senior
Senior Platform Engineer, WebExtensions
Backend Developer
• Senior
• Remote
• Vollzeit
• 📍 Remote France
Mozilla is hiring a Senior Platform Engineer for the WebExtensions team that powers the Firefox add-ons ecosystem. The role involves implementing new extension capabilities deep in the Gecko platform, improving existing APIs, and building Firefox UI features that keep extensions safe, powerful, and manageable. The work emphasizes cross-browser compatibility, standardization, and open source collaboration.
Responsibilities
- ▹Implement and maintain WebExtensions APIs and Addon Management
- ▹Build user interfaces in Firefox for extension management
- ▹Debug and fix issues affecting extensions in Firefox
- ▹Collaborate with product managers, QA, and the AMO engineering team
- ▹Contribute to Mozilla-owned extensions and system add-ons
- ▹Participate in open source workflows including code reviews and pull requests
Requirements
- ▹4+ years of professional software development experience
- ▹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 in distributed teams
Nice to have
- ▹Experience with Firefox internals, C++, or Rust
- ▹Familiarity with Android or GeckoView development
- ▹Knowledge of web security principles
- ▹Contributions to open source, especially browser or extension development
Soft skills
Strong communication skillsCollaboration in distributed teamsPassion for exploring complex systemsBalancing developer power with user trust
What we offer
- ▹Generous performance-based bonus plans
- ▹Rich medical, dental, and vision coverage
- ▹Generous retirement contributions with 100% immediate vesting
- ▹Quarterly all-company wellness days
- ▹Country-specific holidays plus a day off
Languages: angol