Jobs at Mozilla

The Staff Data Scientist will own the analytical strategy for Firefox, driving data-informed decisions through measurement frameworks, experiments, and user growth analysis, while mentoring other data scientists.

The Staff Data Scientist will lead analytical strategies for Firefox, focusing on product growth, measurement frameworks, and mentoring data scientists while guiding data-driven decisions.

Design, fine-tune, evaluate, and deploy LLM-driven, user-facing browser features using RAG, embeddings, prompt engineering, and modern ML tooling. Lead end-to-end model lifecycle, run production experiments, collaborate with product and engineering, and document and review work with an emphasis on privacy, latency, and usability.

Lead and manage the Web Applications engineering team for hosted subscription products. Drive day-to-day execution, people management, budgeting, delivery planning, and engineering practices (CI/CD, testing, observability, release readiness, reliability, security/privacy). Coordinate launches, cross-functional readiness, and improve team processes while staying hands-on with technical tradeoffs and architecture.

Lead and manage the Web Applications engineering team for hosted subscription products. Drive day-to-day execution, people management, budgeting, delivery practices, release and operational readiness, reliability, privacy/security, and cross-functional coordination while remaining hands-on with technical tradeoffs and engineering processes.

As a Senior Data Engineer, you will manage data pipelines, ensure data quality, partner with teams for data-driven decisions, and improve the data platform while maintaining data integrity.

The Senior Data Engineer will create and manage data pipelines, ensuring data quality, collaborating with teams for data-driven decisions, and evolving the data platform.

As a Senior Frontend Engineer at Mozilla, you'll build user interfaces for Firefox, collaborate with teams, maintain code quality, and mentor peers while focusing on accessibility and usability.

Provide frontline privacy counsel to operational teams and lead development and maintenance of scalable privacy compliance infrastructure, data mapping, vendor DPIAs, and incident response. Drive cross-functional privacy governance, advise on global privacy and AI regulatory developments, implement controls and training, and support M&A privacy work.

Lead development and maintenance of Mozilla's privacy compliance infrastructure and governance processes. Provide frontline privacy counsel across teams on data governance, vendor risk (DPIAs/LIAs/TIAs), incident response, and privacy-by-design. Drive cross-functional initiatives, create scalable controls, training, intake and risk frameworks, and support privacy aspects of M&A and integrations.

Lead design, reliability, and evolution of hybrid-cloud and workplace infrastructure. Own domain architecture, drive migrations and reliability improvements, define SLIs/SLOs, automate with IaC, mentor engineers, collaborate across IT/SRE/Security, and maintain operational documentation and runbooks.

Lead design, reliability, and evolution of hybrid-cloud and workplace infrastructure. Architect scalable systems, drive complex migrations and performance improvements, improve reliability through monitoring and automation, collaborate across teams, mentor engineers, and maintain documentation and runbooks.

Design, build, and operate core AI platform components for training, deploying, and serving ML models at scale. Own inference workflows, GPU workload management, CI/CD for ML, observability, and operational practices. Collaborate across product, infra, security, and data teams and mentor junior engineers.

Customer-facing technical lead supporting evaluation, piloting, and deployment of Firefox Enterprise for French enterprises. Drive technical discovery, design solutions, validate interoperability (SSO, PKI, SIEM, proxies, endpoint tooling), run workshops, and produce reusable deployment assets. Partner with sales and partners to reduce risk and enable secure enterprise rollouts.

As a Senior Solutions Engineer, you'll support enterprise clients in DACH by leading technical solutions, managing relationships, and ensuring secure deployments of Firefox Enterprise.

The role involves building the sales pipeline, managing the full sales cycle, and establishing relationships with enterprise clients across DACH for Firefox Enterprise.

Maintain and evolve an EKS-based Kubernetes platform, build CI/CD pipelines (GitHub Actions, OIDC), manage IaC with Pulumi/Terraform/OpenTofu on AWS, operate observability stack, enforce security best practices, diagnose production incidents, participate in on-call rotation, and produce runbooks and documentation to improve reliability.

Operate and evolve an EKS-based Kubernetes platform, build CI/CD pipelines, manage infrastructure as code (Pulumi/Terraform/OpenTofu) across AWS, maintain observability and security practices, respond to incidents and perform post-mortems, participate in on-call rotation, and produce runbooks and architecture documentation while collaborating with distributed engineering teams.

The Senior Software Engineer will enhance development workflows, mentor team members, collaborate on code reviews, and analyze data trends in Firefox development.

Execute digital marketing and communications across social, email, blog, and other channels. Create and publish content, manage campaign calendars, track performance metrics, support email automation, collect customer feedback, and coordinate with internal teams and vendors to drive brand awareness, user growth, and product adoption.