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.