
Senior Software Engineer, WebExtensions
Posted 22 hours ago

Posted 22 hours ago
• Develop and uphold WebExtensions APIs and Addon Management, ensuring a balance between power, safety, and performance, as well as enhancing user interfaces in Firefox.
• Troubleshoot and resolve issues impacting extensions in Firefox.
• Collaborate effectively with product managers, QA, and the AMO engineering team to deliver features from start to finish.
• Contribute to Mozilla-owned extensions and system add-ons.
• Engage in open source workflows, including code reviews, pull requests, and discussions on Bugzilla/GitHub.
• Assist extension developers by diagnosing issues and enhancing tooling/documentation.
• 4+ years of professional experience in software development.
• Strong expertise in JavaScript, DOM APIs, HTML, and CSS.
• Familiarity with modern browser architecture and debugging tools.
• Experience in API design and integration.
• Ability to navigate and learn from extensive codebases.
• Excellent communication skills and experience working in distributed teams.
• Bonus points for:
• Experience with Firefox internals, C++ or Rust.
• Familiarity with Android or GeckoView development.
• Understanding of web security principles.
• Contributions to open source projects, particularly in browser or extension development.
• Generous performance-based bonus plans to all eligible employees - we share in our success as one team.
• Comprehensive 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).
Smartsheet
Smartsheet
Domus Global
PSI CRO AG
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