Contract Software Engineer – DOM Core, Firefox/Gecko

• Help the Firefox DOM Core team improve the health of the Session History area.
• Write Web-Platform tests to improve coverage, and Gecko mochitests as needed.
• Fix problems and pass tests to improve Gecko correctness.
• Work through code review with relevant Gecko module owners and iterate to landing.
• Improve Session History test coverage and code correctness in Gecko, measured by passed test cases, allowing senior engineers to focus on security, performance, and strategic projects.

• Substantial experience in a browser-engine codebase or in automating for a browser-engine, ideally Firefox/Gecko.
• Solid Javascript and applying that language skill to write automated tests.
• Proficiency in and experience developing software in C++.
• Strong debugging skills in a mature larget codebase.
• Comfort working in the open: public bugs, code review, and upstream landing.
• Prior contributions to Gecko or another major browser engine.
• Familiarity with web standards and Web Platform Tests.