Write Web-Platform tests and Gecko mochitests to improve Session History coverage and correctness.
Fix test failures and bugs to improve Gecko correctness, working through code review with module owners.
Collaborate with the Firefox DOM Core team to improve the health of the Session History area.
Mozilla builds the Firefox browser and champions a healthy, open internet. It is a global, mission-driven organization known for its commitment to privacy and open source software.
Design, build, and ship cutting-edge security and hardening features for Firefox's enterprise users.
Advance Firefox's security architecture across multiple operating systems, including privilege isolation, trust boundaries, and cryptographic protocols.
Collaborate with distributed teams to investigate security issues and improve reliability, performance, and memory usage in a complex, multithreaded environment.
Mozilla is a non-profit-backed technology company that makes Firefox, a privacy-minded web browser, and other internet innovations. With 225 million monthly users, we are a mission-driven team focused on making the internet better for people.
Develop and maintain Firefox features for installs, updates, and OS integrations.
Solve platform-specific challenges on Windows and macOS with guidance from senior engineers.
Participate in code reviews, identify bugs, and contribute to an inclusive, distributed team.
Mozilla is a non-profit-backed technology company that builds the Firefox browser and other internet products, with a mission to make the internet better for people. With over 225 million monthly users and a distributed, open, and inclusive culture, the company focuses on AI, social media, and security.
Design browser engine experiments to evaluate performance, correctness, and developer tooling.
Build engine-level prototypes for reliable programmatic interaction with dynamic web content.
Collaborate with the technical lead to assess trade-offs and shape new browser product direction.
Jobgether is an AI-powered job matching platform that connects candidates with hiring companies through skills-based screening. This role is posted on behalf of a partner company exploring browser technology with a small, technically focused team.
Implement tracker blocking that stops hidden trackers on every site without slowing page loads.
Bring VPN and Personal Information Removal into the browser through the DuckDuckGo subscription.
Catch startup and responsiveness regressions automatically, so the browser stays fast as it grows.
We're DuckDuckGo, the online protection company on a mission to raise the standard of trust online. We're a remote-first team of 400+ that's been profitable since 2014, with annual revenue over $100m and a culture of trust, inclusivity, and empowered project management.
Diagnose and verify the long-tail of WebCompat bugs to reduce Firefox's site-breakage backlog.
Write WebCompat interventions and simple, AI-assisted fixes to resolve reported breakages.
Reproduce and triage incoming site-breakage reports while using browser devtools.
Mozilla is the company behind the Firefox browser and a global mission to keep the internet open and accessible to all. The company employs a geographically distributed team and values innovation, collaboration, and user privacy.
Design, build, test, and maintain core components of the replication engine, from capture through apply.
Integrate with databases and cloud platforms such as Db2, Oracle, SQL Server, PostgreSQL, Snowflake, Databricks, Kafka, and Microsoft Fabric.
Work with support, QA, and product to investigate complex customer issues and ship robust fixes and enhancements.
Stelo builds enterprise-class data replication software that moves live data between databases and cloud platforms, freeing organizations from static data pipelines. The company is a small, dedicated team that has been 100% remote since its founding, with a strong emphasis on work/life balance and excellent benefits.
Diagnose and verify the long tail of WebCompat bugs to reduce Firefox's site-breakage backlog.
Write WebCompat interventions and simple fixes, often with AI assistance, and land them.
Reproduce and triage incoming site-breakage reports from users.
Mozilla is a nonprofit organization behind the Firefox browser and champion of internet health and privacy. It operates as a global, distributed team with a culture of openness, inclusivity, and innovation.