Mozilla
Develops Firefox browser and open-source internet software
Mozilla Corporation, a subsidiary of the Mozilla Foundation, coordinates development of Firefox web browser and related products like Thunderbird by a global open-source community. It distributes and promotes these privacy-focused tools to keep the internet open and accessible. Profits are reinvested into mission-driven projects.
Sr Engineering Manager, Web Apps
Lead day-to-day engineering execution and people management for the Web Applications team building MZLA's hosted subscription products. Requires 15+ years experience with 10+ years in engineering leadership and 5+ years people management.
Public Policy & Government Relations Manager
Engage UK policymakers and stakeholders to advocate for privacy, competition, and AI policies supporting Mozilla products. Lead end-to-end policy campaigns and translate technical concepts for decision makers.
Lead Privacy Counsel, Infrastructure & Data Governance
Lead Privacy Counsel building and maintaining Mozilla’s global privacy compliance infrastructure, data governance, third-party risk management, and incident response programs. Requires JD, 8+ years privacy experience as in-house counsel, and proven ability to drive scalable privacy operations.
Senior Machine Learning Engineer, AI Platform
Design, build, and operate Mozilla's AI platform for training, deploying, and serving ML models at scale. Requires 4-6 years experience building production ML systems with strong Python and GPU/cloud infrastructure skills.
Senior Site Reliability Engineer
Senior SRE to operate and evolve EKS Kubernetes platform, CI/CD pipelines, and observability stack for Thunderbird's open-source infrastructure. Requires 7+ years infrastructure experience and strong production Kubernetes and IaC skills.
Marketing Specialist
Execute digital marketing campaigns across social, email, and blog channels to grow Thunderbird's brand awareness and user adoption. Requires 3+ years of marketing experience and strong writing and organizational skills.
Technical Support Specialist
The Technical Support Specialist will provide Level 1 and Level 2 technical support for Thunderbird users, focusing on subscription products. This role involves managing support tickets, troubleshooting technical issues, and contributing to documentation and community forums.
Head of Editorial + Platforms, Mozilla Ecosystem
Leads global editorial vision and storytelling across Mozilla.org, social channels, and publications. Curates ecosystem stories, translates complex tech/policy topics into compelling narratives, and drives cohesive content strategy through cross-team collaboration.
Staff Data Scientist, Firefox
Owns analytical strategy for Firefox product area, partnering with leadership to define metrics, run experiments, and drive growth decisions through causal analysis and modeling. Mentors data scientists with 8+ years experience in SQL/Python required.
Senior Software Engineer - Engineering Workflow and CI
Develops and improves Firefox engineering workflows, CI/CD pipelines, and tools to boost developer productivity. Requires strong Python, JavaScript, cloud services, and CI systems experience; works with distributed teams.
Senior Data Engineer
Senior Data Engineer builds and manages data pipelines, transforms telemetry into reliable datasets, ensures data quality, and evolves the platform on GCP. Requires 4+ years experience, SQL/Python proficiency, strong data modeling, and software engineering fundamentals.
0to1 Engineer
Build rapid working prototypes of developer surfaces, tooling integrations, and applications on open source AI infrastructure to demonstrate Mozilla's capabilities. Collaborate with community teams to create shareable demos that spark engagement in the open source AI ecosystem, using Python/TypeScript and AI coding agents.