Web Compatibility Engineer: Diagnose & Fix Site Breakages

Company: Mozilla
Apply for the Web Compatibility Engineer: Diagnose & Fix Site Breakages
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Job Description:

Mozilla is seeking a WebCompat engineer in the UK to reduce Firefox’s bug backlog by finishing or verifying diagnoses on long-tail site-breakage issues. You will write interventions or simple fixes, often with AI assistance, and land them in the codebase.

You will reproduce and triage incoming site-breakage reports, collaborating with teams to deliver reliable browser compatibility improvements.

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Posted: October 11th, 2026