🛠 Tech Stack

💼 About This Role

You'll help implement new extension capabilities for Firefox and improve existing APIs. You'll work deep in the Gecko platform to evolve extension capabilities and build UI features that make extensions manageable for users. This role collaborates with experts across Mozilla to advance cross-browser compatibility and standardization.

🎯 What You'll Do

• Implement and maintain WebExtensions APIs and Addon Management
• 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

📋 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

✨ Nice to Have

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

🎁 Benefits & Perks

• 🏖️ Generous PTO and quarterly wellness days
• 💰 Performance-based bonus plans
• 🏥 Rich medical, dental, and vision coverage
• 🏦 Generous retirement contributions with immediate vesting
• 💻 Annual professional development budget

📨 Hiring Process

Estimated timeline: 2-4 weeks · AI estimate

1. 1Recruiter Call· 30 min
2. 2Technical Interview· 60 min
3. 3Hiring Manager Interview· 45 min