Top Tech Jobs & Startup Jobs in London

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.

Build and improve Mozilla’s Add-ons platform, including Python/Django applications, automated moderation pipelines, reviewer tools, DevHub, internal developer platforms, and CI/CD systems. Establish engineering standards, observability, safe deployment practices, documentation, and incident response processes. Debug complex production systems, improve reliability, collaborate across distributed teams, mentor peers, and contribute to open-source development.