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Staff Software Engineer-Bug Burndown

Mozilla · Remote Canada; Remote Germany; Remote UK · Germany

Employer
Mozilla
Requisition id
3565395
First posted (employer ATS)
(1h ago)
First seen by this site
2026-10-06T19:48:25Z
Last verified live
2026-10-06T20:48:41Z
Source
Employer career portal (greenhouse)

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.

Apply on Mozilla’s site

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