Help Firefox address real-world site breakage through browser debugging, cross-browser diagnosis, and targeted WebCompat interventions at Mozilla.

This Contract Staff Software Engineer role centers on incoming reports and a long tail of WebCompat bugs. You will reproduce breakages, complete or verify diagnoses, and create actionable outcomes. Easy fixes may use AI tooling before being landed.

Key Responsibilities:

- Reproduce incoming Firefox site-breakage reports
- Triage reported WebCompat bugs
- Complete diagnosis of long-tail breakages
- Verify diagnoses and clarify actionable bugs
- Land simple fixes with AI assistance

Requirements:

- Experience with HTML, CSS, and JavaScript
- Strong browser developer tools experience
- Cross-browser diagnosis comfort
- Ability to use AI tooling effectively
- Gecko knowledge is a strong plus

Bring browser diagnosis, WebCompat triage, and practical fixing skills to help turn Firefox site-breakage reports into resolved bugs.

📌 Firefox WebCompat Bug Triage Engineer (Quebec City)
🏢 Mozilla
📍 Quebec City