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

• 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 (preferred)
• Familiarity with web standards and Web Platform Tests (preferred)