# Senior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine)MozillaSalary not statedContractremote· seniorGermanyjavascriptListed via Jobicy · posted 21 Oct 2026. The application happens there, not on DevConnect.Apply on Jobicy## DescriptionThe roleYou 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 landingDefinition of doneImproved 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.- 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.Preferred- Prior contributions to Gecko or another major browser engine.- Familiarity with web standards and Web Platform Tests. #J-18808-Ljbffr
Senior Contract C++ / JavaScript Software Engineer Firefox (Browser Engine) Arbeitgeber: Devconnectplatform
LivePerson ist ein hervorragender Arbeitgeber, der seinen Mitarbeitern in Berlin und darüber hinaus eine flexible Remote-Arbeitsumgebung bietet. Mit einem starken Fokus auf berufliche Weiterentwicklung, großzügigen Urlaubstagen und einem unterstützenden Arbeitsumfeld fördert das Unternehmen eine Kultur der Vielfalt und des Wachstums. Die Möglichkeit, an innovativen Projekten im Bereich Conversational AI zu arbeiten, macht LivePerson zu einem attraktiven Ort für talentierte Software-Ingenieure, die einen bedeutenden Einfluss auf die Zukunft der Datenplattformen haben möchten.
