N Staff Software Engineer-Bug Burndown
Ref #5572 • Engineering Full-time

Staff Software Engineer-Bug Burndown

mozilla Visit Official Job Post • Remote (International) • Posted Oct 07, 2026
Salary / Terms €60,000 - €80,000 / Year
Open Positions 1 Openings
Experience Freshers / Experienced
Deadline November 11, 2026

Job Description & Overview

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.

Skills & Requirements

Required Skills / Tags:
Firefox
Qualifications Not specific
Visa / Work Permit Type Company Sponsored

Contract & Benefits

Contract Terms Standard Contract
Interview Mode CV Selection / Online Interview
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