Contract Software Engineer – WebCompat Bug Burndown

Mozilla; Greater London; On-site; GBP 70,000 - 100,000; Part time

Job summary

Mozilla in London, United Kingdom, is seeking a Contract Staff Software Engineer to help reduce Firefox’s WebCompat bug backlog. You will diagnose, verify, and intervene on long-tail site-breakage bugs, with AI-assisted fixes and hands-on landings.

Responsibilities include reproducing reports, triaging issues, and collaborating on timely interventions to improve compatibility, guided by guidance on Gecko and Web Standards.

Qualifications

• Comfortable using AI tooling to speed up diagnosis and fixes.
• Gecko knowledge is a strong plus (but can be taught).
• Prior WebCompat or web-standards experience.

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.

Skills

AI tooling fluency

Tools

Gecko knowledge

Web standards

Job description

Mozilla in London, United Kingdom, is seeking a Contract Staff Software Engineer to help reduce Firefox’s WebCompat bug backlog. You will diagnose, verify, and intervene on long-tail site-breakage bugs, with AI-assisted fixes and hands-on landings.

Responsibilities include reproducing reports, triaging issues, and collaborating on timely interventions to improve compatibility, guided by guidance on Gecko and Web Standards.