Staff Software Engineer-Bug Burndown

mozilla

Remote
Remote
Posted 2026-10-06

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Skills named in this job

CSS
HTML
JavaScript

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Questions you are likely to be asked

Why do you want to join mozilla?
What is your experience with CSS? Tell me one thing you learned the hard way.
What do you do when a production issue happens on your code?
Walk me through a system you built. How was it designed, and what would you change now?
Tell me about a hard bug you tracked down. How did you find the cause?

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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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Listed on arbeitnow · posted 2026-10-06. ApplySarthi collects openings and links to application pages; the role is advertised by mozilla, not by us.