This posting is no longer on the employer's careers site (last seen 08 Oct 2026 15:15). It stays here for reference; the apply link may no longer work.

Contract Staff Software Engineer-Bug Burndown

Mozilla

Apply at MozillaOpens the employer's own posting.

Where: Remote · Remote Canada; Remote Germany; Remote UK
Level: Staff
Terms: Contract
Salary: not stated by the employer
Technologies: JavaScript
First sniffed: 07 Oct 2026 01:45 · open 23 days
Last verified: 08 Oct 2026 15:15 · since closed
Source: Company careers system

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.

Apply at Mozilla