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.
Implement Storage Encryption Everywhere in Gecko, including schema migrations and private browsing mode data storage.
Write and pass Web Platform Tests and add Gecko tests while iterating through code review with module owners.
Drive the feature through Nightly, Beta, and Release, fixing correctness, performance issues, and regressions.
Mozilla builds Firefox and other software that promote an open, private, and accessible internet. It is a mission-driven, globally distributed organization with a culture of transparency, open source contribution, and user trust.
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.
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 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.
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.
Lead technical architecture and drive complex projects.
Write code, build prototypes, and contribute throughout the development lifecycle.
Mentor engineers through code review and technical discussions.
Thunderbird is one of the world's most trusted open-source email applications, empowering over 20 million people. Our small but growing distributed team includes more than 65 people across seven countries.
Lead and develop a distributed engineering organization across multiple time zones.
Drive technical roadmap and engineering excellence for scalable, secure, observable systems.
Foster ownership, continuous learning, and reliability practices across engineering teams.
They build developer tooling for identifying security vulnerabilities and code quality issues early in the development lifecycle. A distributed, collaborative culture across Canada, US, and Europe, emphasizing ownership and continuous learning.