Senior Software Engineer

The Firefox Monitor Engineering Team builds tools that help people understand and respond to data breaches. We notify users when their credentials appear in exposed datasets and empower them to take back control of their online privacy. We operate at scale, serving millions of users, and our work sits at the intersection of security, data privacy, and product engineering. As a Senior Software Engineer on the Firefox Monitor team, you will be a core contributor to a modern, cloud-native Node.js/TypeScript full-stack application. This role spans feature development, infrastructure ownership, and application support. You'll own backend systems and integrations that keep users informed and protected, help maintain and evolve the cloud infrastructure the application runs on, and play an active role in keeping the service reliable and healthy in production. You'll do this while collaborating closely with frontend, SRE, and product teams to deliver reliable, privacy-first features.