17h ago

Senior Software Engineer, WebExtensions

Remote US

$116k-$183k / year

full-timesenior Remotesoftware

๐Ÿ›  Tech Stack

๐Ÿ’ผ About This Role

You'll implement new extension capabilities and improve existing APIs for the Firefox add-ons ecosystem. Your work will balance developer power with user trust as you evolve the WebExtensions platform deep in the Gecko browser engine.

๐ŸŽฏ What You'll Do

  • Implement and maintain WebExtensions APIs and Addon Management in Firefox
  • Debug and fix issues affecting extensions in Firefox
  • Collaborate with product managers, QA, and AMO engineering team
  • Contribute to Mozilla-owned extensions and system add-ons

๐Ÿ“‹ 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

โœจ Nice to Have

  • Experience with Firefox internals, C++ or Rust
  • Familiarity with Android or GeckoView development
  • Knowledge of web security principles

๐ŸŽ Benefits & Perks

  • ๐Ÿ’ฐ Performance-based bonus plans
  • ๐Ÿฉบ Rich medical, dental, and vision coverage
  • ๐Ÿ–๏ธ Quarterly all-company wellness days
  • ๐Ÿก One-time home office stipend
  • ๐Ÿ“š Annual professional development budget

๐Ÿ“จ Hiring Process

Estimated timeline: 2-4 weeks ยท AI estimate

  1. 1Recruiter Screenยท 30 min
  2. 2Technical Interviewยท 60 min
  3. 3Hiring Manager Interviewยท 45 min
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