Contract Staff Software Engineer-Bug Burndown
Mozilla · Remote · Posted October 20, 2026
- Who can apply
- Germany
- Pay
- Not stated in the posting
- How you’d be employed
- Contractor
- Level
- Staff or principal
- Location in the posting
- Remote Germany · Remote Canada · Remote Denmark · Remote France · Remote Germany · Remote UK
- Skills required
- HTML, CSS, JavaScript, Browser devtools, AI tooling
- Nice to have
- Gecko, WebCompat
Analyzed from the full posting. Quotes are the posting’s own words.
From the posting
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.