San Francisco, CA
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.
Conducts full-cycle technical recruiting, partnering with hiring managers to develop sourcing strategies, evaluate candidates, and manage hiring through offer acceptance. Requires 5+ years of technical recruiting experience, strong sourcing and screening skills, ATS proficiency, and data-driven decision-making.
Leads full-cycle technical recruiting for Mozilla, partnering with hiring managers to build diverse pipelines, evaluate technical candidates, and manage hiring through offer acceptance. Requires at least five years of technical recruiting experience and proficiency with sourcing tools, ATS platforms, and recruitment analytics.
Leads Mozilla’s security compliance and governance programs, maintaining the ISMS and supporting ISO 27001 and SOC 2 Type 2 audits. The role requires at least five years of information security or GRC experience, strong policy and remediation expertise, and effective cross-functional collaboration.
Maintains Mozilla’s information security management system and leads ISO 27001 and SOC 2 compliance activities, including audit readiness, policy governance, remediation tracking, and stakeholder coordination. Requires at least five years in information security, GRC, or compliance and strong audit experience.
Senior Staff Data Scientist partnering with executives to provide data-driven strategic recommendations. Requires exceptional communication, influence without authority, and deep expertise in Python/R, SQL, statistics and modern data science methods.
Senior Staff Data Scientist partnering with executives to provide data-driven strategic recommendations, build analytical solutions for complex problems, and mentor the data science team at Mozilla.
Build and maintain workplace technology automations, integrations, and AI-enabled workflows across collaboration and identity platforms. The role requires 4–6 years of software engineering or systems integration experience, scripting proficiency, API knowledge, and familiarity with SaaS and IAM/SSO systems.
Build and maintain workplace technology automations, integrations, and AI-enabled workflows across collaboration and identity platforms. The role requires 4–6 years of software engineering or systems integration experience, scripting proficiency, and familiarity with APIs, SaaS tools, and IAM/SSO.
Build and evolve Thunderbird’s iOS application, focusing on architecture, performance, reliability, security, accessibility, and maintainability. The role requires deep Swift and iOS expertise, 7+ years of professional software development experience, and strong ownership and collaboration skills.
Build and evolve Thunderbird’s iOS application, focusing on architecture, performance, reliability, security, accessibility, and maintainability. The role requires deep iOS expertise, Swift and SwiftUI proficiency, and 7+ years of professional software development experience.
Senior backend engineer owning services end-to-end on Mozilla's Ecosystem Services team. Build, deploy, operate, and monitor backend platforms powering Firefox products with focus on privacy, security, and reliability using Python, Node.js, or Rust on GCP.
Lead a team of engineers building privacy-respecting Firefox Suggest Ads backend services, partner integrations, and experimentation capabilities. Requires 6+ years software engineering experience including 2+ years people management, strong collaboration with Product and cross-functional stakeholders, and comfort in distributed environments.
Lead a team of software engineers building privacy-respecting Firefox Suggest Ads backend services, partner integrations, and experimentation capabilities. Requires 6+ years software engineering experience including 2+ years people management, strong collaboration with product and cross-functional stakeholders, and comfort in distributed environments.
Senior Privacy & Compliance Program Manager to coordinate privacy, compliance, data governance, and vendor review programs at Thunderbird/MZLA. Build practical processes for a growing open-source email company serving a global user base with strong EU presence; requires 8+ years experience and technical fluency.
Create and execute technical content, social media, email, and digital marketing programs for Thunderbird's open-source privacy-focused email and communication products. Requires 3+ years marketing experience, strong writing skills, and familiarity with tech/SaaS products.
Create and execute technical content, social media, email, and digital marketing programs for Thunderbird's privacy-focused email and communication products. Requires 3+ years marketing experience, strong writing skills, and ability to translate technical features into user-focused stories.
Own and scale Mozilla's web bug bounty program. Triage and validate reports from HackerOne/Bugzilla, drive vulnerability remediation with engineering teams, perform code reviews, and collaborate with SIRT on incidents. Requires 3+ years security engineering experience and bug bounty or bug hunting background.
Own and scale Mozilla's web bug bounty program as the primary interface with external researchers. Lead triage, validation, remediation of reports, collaborate with SIRT on incidents, perform code reviews, and drive secure development improvements. Requires 3+ years security engineering experience and bug bounty or bug hunting background.
Senior Software Engineer improving the architecture, stability, and performance of Firefox's core Gecko accessibility engine. Requires strong C++ and systems programming experience, knowledge of web accessibility/ARIA, and the ability to debug complex multi-process codebases.
Senior Software Engineer improving the architecture, stability, and performance of Firefox's core Gecko accessibility engine. Requires strong C++ and systems programming experience, knowledge of web accessibility/ARIA, and the ability to debug complex multi-process codebases.
Director of Product leading new gaming product initiatives at Mozilla. Define vision, strategy, and roadmap for PC gaming products at the intersection of gaming and the open web; manage design/engineering teams; drive product-market fit, metrics, and growth from early stage.
Lead architectural design and implementation of next-generation AI agent frameworks, multi-agent orchestration, and LLM workflows at Mozilla's New Products incubator. Requires 7+ years software engineering experience including 2+ years building production agentic systems, startup mentality, and deep proficiency with AI coding tools.
Lead architectural design and implementation of production-grade multi-agent frameworks, LLM orchestration, and autonomous AI agent systems from the ground up at Mozilla's New Products incubator. Requires 7+ years software engineering experience including 2+ years building agentic systems, startup mentality, and deep proficiency with AI tooling.
Own the customer, partner, and early revenue side of Mozilla's new browser infrastructure platform for web automation. Identify design partners, build pipeline, run discovery and technical sales cycles, shape pilots, close early contracts, and translate needs into product input in a 0-to-1 environment.
Own customer, partner, and early revenue for Mozilla's new browser infrastructure platform for web automation and AI agents. Identify design partners, build pipeline, run technical sales and pilots, close early contracts, and shape product roadmap in a 0-to-1 environment.
Lead engineering execution and people management for Thunderbolt, an open-source AI product. Manage senior engineers, contribute technically, and drive production-ready practices for enterprise-grade, privacy-first AI deployments.
Lead engineering execution, people management, and operating practices for an open-source AI product moving from R&D to production. Manage senior engineers, contribute technically, and establish scalable engineering practices for enterprise-ready deployment.
Senior ML Engineer focused on fine-tuning and deploying LLMs and generative AI features into Firefox, emphasizing privacy, latency, and user experience.
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.