Senior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)

Mozilla Corporation All jobs
Remote United Kingdom
13 day(s) ago Remote
JavaScript C C++
Job Overview
Company Mozilla Corporation
Job Level senior
Posted 2026-10-20
Last Seen 13 day(s) ago

Job Description

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 … Sign In to View

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