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Remote Staff Data Scientist for Firefox responsible for owning analytical strategy for a major product area, designing experiments and causal analyses, defining product metrics and measurement frameworks, contributing to forecasting and growth modeling, and mentoring other data scientists. Requires 8+ years of data science/analytics experience and advanced SQL and Python proficiency.
Mozilla seeks a Senior Software Engineer to improve Firefox development workflows and CI, build services with Python, contribute front-end JavaScript, work with frameworks like FastAPI/Flask/Django, cloud services (GCP/AWS), databases/SQL, and CI systems (GitHub Actions, CircleCI). Role is remote (Netherlands) and emphasizes collaboration, mentoring, data-driven dashboards, and developer productivity.
Mozilla seeks a Senior Software Engineer for the Engineering Workflow and CI team to improve Firefox development workflows, reduce test/debug time, integrate automation, and provide dashboards and data-driven insights. The role requires proven Python development experience (services/frameworks), frontend/JavaScript proficiency, familiarity with cloud services (GCP/AWS), REST, databases/SQL, and CI/CD systems (e.g., GitHub Actions, CircleCI). Responsibilities include collaborating across distributed teams, mentoring, code review, and working cross-platform.
Work with a distributed team to improve Firefox development workflows, automation, and CI systems; mentor and collaborate on code review and technical direction. Requires strong Python and front-end (JavaScript) skills, experience with Python frameworks (FastAPI/Flask/Django), cloud services (GCP/AWS), databases/SQL, CI/CD systems (GitHub Actions/CircleCI), and cross-platform development experience.
Role to improve Firefox developer workflows, reduce testing/debugging time, and increase automation and integration across CI/CD systems. Requires proven Python and front-end (JavaScript) experience, familiarity with Python frameworks (FastAPI/Flask/Django), cloud services (GCP/AWS), databases/SQL, CI systems (GitHub Actions/CircleCI), and cross-platform environments. Remote, based in Finland.
Work on improving Firefox development workflows, CI/CD and automation; collaborate with distributed teams, mentor peers, provide code review, build dashboards and analyze workflow data. Required skills include Python, JavaScript, web frameworks (FastAPI/Flask/Django), cloud services (GCP/AWS), SQL, CI systems (GitHub Actions/CircleCI) and cross-platform familiarity.
Remote (France) senior role on Mozilla's Engineering Workflow and CI team to improve developer workflows, automate testing and integration, and provide technical direction. Requires strong Python and front-end (JavaScript) skills, experience with Python frameworks (e.g., FastAPI/Flask/Django), cloud services (GCP/AWS), SQL/databases, CI/CD systems (GitHub Actions, CircleCI) and familiarity with containerization (Docker) and version control.
Mozilla is hiring a Senior Software Engineer on the Engineering Workflow and CI team to improve Firefox development workflows, CI/CD, automation, and developer productivity. Role responsibilities include building services (Python), front-end work (JavaScript), collaborating across distributed teams, mentoring, code review, and producing dashboards and data-driven insights. Required skills include Python (and frameworks like FastAPI/Flask/Django), cloud services (GCP/AWS), REST, SQL/databases, CI systems (GitHub Actions, CircleCI), and cross-platform development. Remote UK; listed hiring range £65,000–£87,000 GBP.
Join Mozilla as a Senior Software Engineer on the Engineering Workflow and CI team to improve Firefox developer workflows, reduce time spent debugging test failures, and increase automation and integration. The role involves building services (Python), front-end work (JavaScript), working with CI/CD systems (e.g., GitHub Actions, CircleCI), cloud services (GCP/AWS), databases/SQL, creating dashboards and analyzing trends, collaborating across distributed teams, and mentoring others. Remote role.
Mozilla is hiring a Senior Software Engineer for the Engineering Workflow and CI team to improve Firefox development workflows, automation, and CI systems, and to analyze data and build dashboards. The role requires proven Python skills, front-end/JavaScript experience, familiarity with Python frameworks (e.g., FastAPI, Flask, Django), cloud services (GCP/AWS), databases/SQL, and CI/CD systems (e.g., GitHub Actions, CircleCI). Location: Remote (Germany). Hiring range: €68,000–€91,000 EUR per year.
Join Mozilla's Marketing Data Science team to own marketing tests end-to-end, build Python-based measurement workflows, develop reporting and monitoring tools, and conduct deep-dive analyses on performance, attribution, and data integrity. Requires 2–3 years of quantitative analysis experience, strong SQL, and proficiency with Python and reporting tools; experience with geo experiments or synthetic control models and familiarity with digital marketing platforms is a plus.
Mozilla seeks a Senior Data Engineer to manage the data lifecycle: ingesting, transforming, and modeling data (including Firefox telemetry) into reliable datasets. Responsibilities include building and operating data pipelines, ensuring data quality via observability and triage rotations, evolving the platform (medallion architecture, data catalog), and enforcing data governance and privacy. Requires minimum 4 years in data engineering, proficiency in SQL and Python, and experience with cloud distributed systems (GCP). Posted US salary ranges: $104,000–$164,000 USD/year depending on location tier.
Join Mozilla's Data Engineering team to build and maintain business data pipelines and transform telemetry into structured, reliable datasets. Responsibilities include partnering with data scientists and product teams, monitoring data quality using observability tools, participating in triage rotations, evolving the data platform (including medallion architecture), and enforcing data governance and privacy. Requires at least 4 years of data engineering experience, proficiency in SQL and Python, experience with cloud distributed systems (GCP), and data modeling skills.
Mozilla is hiring a Senior Data Engineer (remote, Canada). The role requires a minimum of 4 years' data engineering experience and involves building and managing business and telemetry data pipelines, partnering with stakeholders to produce analytical models, ensuring data quality and governance, and improving the data platform (GCP). Key technical skills include SQL, Python, cloud distributed systems, and data observability.
Mozilla is hiring a contractor to ship working tools, demos, and reference implementations for Harbor and related open-source AI tooling. The role focuses on browser extension and SDK work (WebAgents API), MCP servers, local inference, permission/capability design, and engaging in standards work (WICG/W3C) while producing clear code and documentation for public consumption.