Contract Software Engineer - DOM Core Firefox/Gecko at Mozilla
- Company: Mozilla
- Location: Remote
- Employment type: Full-time
- Posted: 2026-09-22
About the role
The role . You will help the Firefox DOM Core team improve the health of the Session History area. You will write tests to improve the coverage; you will fix tests and/or problems to improve the Gecko correctness. Responsibilities . Write Web-Platform tests to improve the coverage, and Gecko mochitests as needed . Fix the problems and pass the tests to improve the Gecko correctness . Work through code review with the relevant Gecko module owners and iterate to landing . Definition of done . Improved Session History test coverage and code correctness in Gecko, measured by passed test cases, allowing the team’s senior engineers to focus on security, performance and strategic projects. Required qualifications . Substantial experience in a browser-engine codebase or in automating for a browser-engine, ideally Firefox/Gecko.…
Apply on Mozilla's official careers page: https://job-boards.greenhouse.io/mozilla/jobs/8223520