A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation. Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come). By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.
Remote · Canada
You will design, develop, and evolve the Thunderbird iOS application while establishing a strong technical foundation for the product. You will collaborate with cross-functional teams and the open-source community to deliver high-quality, scalable, and secure mobile experiences.
Remote · Canada
You will lead backend development and own the end-to-end lifecycle of services, including deployment, operation, and maintenance in production. You will also collaborate with cross-functional teams to ensure system reliability, security, and performance while participating in on-call rotations.
Remote · Canada
Lead backend development and maintain server-side logic while taking end-to-end ownership of services in production. Collaborate with cross-functional teams to ensure system reliability, monitor performance, and participate in on-call support rotations.
Remote · Canada
The Staff Data Scientist will own the analytical strategy for a major product area, defining success metrics and driving data-informed decisions. They will partner with product and engineering leadership to translate business problems into actionable recommendations while mentoring other team members.
Remote · United States
The Staff Data Scientist will own the analytical strategy for a major product area, defining success metrics and driving data-informed decisions. They will act as a strategic partner to product and engineering leadership while mentoring other data scientists to elevate team standards.
Remote · Canada
Advance Firefox's security architecture and cryptography stack, focusing on cryptographic protocols and WebPKI. Design and implement secure, interoperable web platform features while improving browser reliability and performance.
Remote · Canada
Develop and improve Firefox features related to installation, updates, and low-level OS integration for Windows and macOS. Collaborate with a distributed team to scope projects, resolve complex bugs, and drive architectural discussions.
Remote · Canada
Develop and maintain an Internal Developer Infrastructure Platform focusing on CI/CD, observability, and Kubernetes optimization. Guide technical decision-making and create agentic workflows to improve developer productivity and platform scalability.