CareerPlan

Contract Staff Software Engineer

Mozilla

CANADAContract2026-11-08 → 2026-11-09

Core

Diagnosing, verifying, and fixing long-tail WebCompat bugs to reduce Firefox's site-breakage backlog.

Role type

Contract Staff Software Engineer (WebCompat)

Builds

Firefox browser fixes and interventions

Domain

Web development / Browser engineering

Required skills

HTML, CSS, JavaScript, browser devtools, cross-browser diagnosis, AI tooling

Preferred skills

Gecko knowledge, WebCompat experience, web-standards experience

Technologies

Firefox, Gecko, AI tools

Responsibilities

Finish diagnosing or verify diagnosis of long-tail WebCompat bugs, write WebCompat interventions, write and land simple fixes, reproduce and triage incoming site-breakage reports

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About Mozilla

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users everywhere. And you give us a chance to make a difference in your life every single day. Join us to work on the Web as the platform and help create more opportunity and innovation for everyone online.

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