Teams at Mozilla

Design, implement, test, and ship Firefox security and hardening features for enterprise users. Improve browser security architecture across operating systems, including privilege isolation, trust boundaries, cryptographic protocols, WebPKI, and security-sensitive web APIs. Investigate security issues, deliver maintainable fixes, and resolve stability, correctness, performance, memory, and multithreading challenges in a complex native codebase.

Own Firefox’s mobile product experience, primarily for iOS and also Android. Improve usability, performance, downloads, activation, retention, and differentiated features through user research, analytics, funnel optimization, testing, and iteration. Collaborate with engineering, design, data science, and TPM teams to ship improvements, monitor app health, support app-store growth, and adapt the product for international markets.

Monitor and respond to global security incidents, lead incident response lifecycles, conduct threat hunting, manage threat intelligence workflows, and maintain SIEM, EDR, SOAR, alerts, playbooks, and escalation processes. The role participates in on-call rotations, coordinates stakeholders, and drives continuous improvement across preparation, detection, containment, and post-incident activities.