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Active1w ago

Contract Staff Software Engineer-Bug Burndown

Mozilla·📍 Germany

Employment

Full-Time

Work mode

Remote

Experience

SENIOR LEVEL

Salary

Not disclosed

Salary not disclosed

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Role overview

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.

About this listing

  • Source: Mozilla's official careers site (via Greenhouse) · last confirmed on the source 29 Oct 2026
  • Posted 20 Oct 2026

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Role market pulse

How Software Engineer demand looks in Germany

68/100 · rising

Live jobs

20

Posted 30d

12

30d movement

+100%

Remote share

5%

Salary listed

0%

Salary trend 1Y

Not enough history

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What they are looking for

Skills & requirements

javascript →ai →

Department · Firefox

Hiring company

Mozilla

Technology

The independent browser that has your back. Firefox blocks trackers, has a free built-in VPN, puts you in control of AI, and never sells your personal data.

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