Contract Staff Software Engineer-Bug Burndown
At Mozilla · Remote Germany; Remote Canada; Remote Denmark; Remote France; Remote UK
- Engineering
- Staff or principal
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Where you can work from
Open to Canada, Germany, Denmark and 2 more
“Remote Germany”
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“Remote Canada”
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“Remote Denmark”
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“Remote France”
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“Remote UK”
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- Posted
- 19 hours ago
- First seen by us
- 21 October 2026
- Last checked
- 8 hours ago
Job description
From Mozilla’s job post, as they wrote it.
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.
Read the full description
* 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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