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Contract Staff Software Engineer-Bug Burndown

mozilla · Remote, DE

Posted Oct 20, 2026

About the job

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.
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