YUGENOX·JOBS

Contract Staff Software Engineer-Bug Burndown

Mozilla · Remote Germany · open in 2 locations

About the role

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.

Text as published by Mozilla. We don't edit postings; apply and ask questions on the employer's site.

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First seen by us
Nov 7, 2026
Still listed
Nov 10, 2026
Source
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