Contract Staff Software Engineer – WebCompat & Bug Triage at Mozilla

  • Company: Mozilla
  • Location: Remote Canada
  • Job type: contract
  • Workplace: remote
  • Posted: 2026-10-20

Apply for this role

All open roles at Mozilla

Job description

You will help reduce Firefox’s WebCompat bug backlog by finishing or verifying the diagnosis of the long tail of site-breakage bugs, and by writing interventions or simple fixes (often with AI assistance). You turn a large queue of reported breakages into diagnosed, actionable, or fixed bugs. Responsibilities Finish diagnosing, or verify the diagnosis of, long-tail WebCompat bugs. Write WebCompat interventions where appropriate. Write simple fixes (AI-assisted) and land them. Reproduce and triage incoming site-breakage reports. Required qualifications Solid web development (HTML, CSS, JavaScript) and comfort debugging real-world site breakage. Fluent with browser devtools and cross-browser diagnosis. Comfortable using AI tooling to speed up diagnosis and fixes. Preferred Gecko knowledge is a strong plus (but can be taught). Prior WebCompat or web-standards experience.

Contract Staff Software Engineer – WebCompat & Bug Triage on JobPost.