Mozilla seeks a Staff Program Manager for Trust & Safety to lead safety and compliance initiatives across products (including AI and marketplace integrity). Requires 5+ years in Trust & Safety or related operations, experience with content moderation ecosystems and scaled review systems, metrics-driven program evaluation, and collaboration with product, engineering, legal, and policy teams.

Lead Trust & Safety programs (policy implementation, content moderation, regulatory compliance) and partner with Product, Engineering, Legal and Policy teams to identify and mitigate user safety risks. Use data-driven frameworks, metrics and reporting to assess program effectiveness and improve outcomes. Requires 5+ years of Trust & Safety or related experience and familiarity with content moderation ecosystems and AI safety. Remote UK role with a listed salary range of £72,000–£96,000.

Mozilla seeks a Staff Program Manager for Trust & Safety to design and implement safety and compliance initiatives across product portfolios. Responsibilities include managing Trust & Safety programs, collaborating with product/engineering/legal/policy teams, applying data-driven frameworks to assess program effectiveness, and addressing risks related to online safety and AI. Requires 5+ years in Trust & Safety or related operations and experience with content moderation, policy implementation, and metrics-driven program improvements.

Lead Trust & Safety programs including policy implementation, content moderation, and regulatory compliance. Partner with product, engineering, legal, and policy teams to assess risks, apply data-driven frameworks to measure program effectiveness, and improve end-to-end safety systems. Requires 5+ years of Trust & Safety or related operations experience and familiarity with content moderation ecosystems and AI safety issues.

Mozilla is hiring a Director of Product in the New Products org to define and launch gaming-focused products on the open web. The role is remote in Canada or the US and involves market strategy, business model and go-to-market development, owning product metrics, and managing cross-disciplinary teams (design and engineering). Requirements include 7+ years of product management experience, 5+ years in the video gaming industry, and demonstrated people leadership and early-stage product scaling experience.

Responsible for maturing, maintaining, and building features for Mozilla's Internal Developer Infrastructure Platform, including CI/CD, observability, Kubernetes optimization, environment bootstrapping, and cost optimization. Requires 5+ years software engineering experience, technical leadership, proficiency in Python/JavaScript/Go, and strong experience with cloud-native technologies (GCP preferred, AWS acceptable) and tools such as ArgoCD, Grafana, Terraform, Helm, Backstage.

Mozilla seeks a Senior Content Creator based in Germany to conceptualize, script, film, and edit short-form videos for TikTok, Instagram, and Threads; translate and adapt global content to the German market; manage @firefox_de community; and develop relationships with German creators. Requires German fluency, 5+ years of social content production, and proficiency in mobile-first editing tools.

Experienced Creative Producer role focused on Firefox marketing. Responsible for end-to-end campaign production and creative operations, managing external agencies and contractors, running RFPs and contracts, maintaining budgets and timelines, coordinating stakeholders (Product Marketing, Comms, Data & Insights, regional teams), and contributing to team operations and process development. Requires 5+ years of relevant experience.

Hands-on Senior Engineering Manager role for Thunderbolt: manage engineers and contractors, contribute to codebase, define production-ready standards, establish planning/release practices, partner with product and design, improve engineering practices (CI/CD, testing, documentation), and support scaling the product for enterprise adoption. Remote role for candidates residing and authorized to work in Canada.

Hands-on Senior Engineering Manager role for Thunderbolt (open-source AI product) responsible for production-readiness, release discipline, code quality, and scaling engineering practices. Manage engineers and contractors, contribute to codebase, coordinate across product and technical leadership, and support enterprise-ready features (security, privacy, self-hosted deployments). Role is fully remote in the US; salary range listed at $215,000–$240,000 USD/year; visa sponsorship not provided.

Full-time, fully remote Senior Engineering Manager role leading a senior engineering team for Thunderbolt (open-source AI product). Responsible for engineering execution, people management, release discipline, code quality, and scaling the product toward enterprise readiness. Requires 15+ years software development experience and 5+ years managing technical teams; employer does not provide visa sponsorship.

Work on design, build, and operation of core platform services and APIs for training, deploying, and serving ML workloads at scale. Responsible for reliability, scalability, Kubernetes/GKE workloads, Terraform provisioning, observability, on-call incident response, and collaboration with product, infrastructure, security, and data teams.

Join Mozilla as Director of Strategic Finance & Direct Investments to own 3–5-year financial models, conduct TAM/SAM/SOM market sizing, monitor direct and venture investments, advise senior leadership, and lead a small strategic finance team. Role is remote in the US, reports to the VP of Finance, and requires 10+ years of relevant experience; posted US salary ranges are listed by tier.

Work on Firefox security architecture and cryptography stack, implement web platform security features, improve reliability and performance of a multi-threaded browser, and collaborate on security initiatives. Required skills include C/C++, security and cryptography knowledge, debugging multi-threaded native applications, and familiarity with Rust and web technologies.

Mozilla is hiring a Senior Software Engineer for Firefox Security to advance Firefox's security architecture and cryptography stack (including cryptographic protocols and WebPKI), design and implement web platform security features, and improve stability, performance, and memory efficiency in a multi-threaded browser. Role requires strong C/C++ proficiency, security fundamentals, debugging skills, and familiarity or interest in Rust. Position is remote (UK) with a stated hiring range of £66,000–£87,000 GBP.

Work on Firefox's security architecture and cryptography stack, including cryptographic protocols, WebPKI, and security-sensitive web APIs. Design and implement web platform security features, improve browser reliability/performance in a multi-threaded native codebase, collaborate across teams on security initiatives, and contribute to technical design and standards-based implementations. Requires strong C/C++ skills, security fundamentals, debugging and systems programming experience; Rust familiarity is a plus.

Work on Firefox security architecture and cryptography stack (cryptographic protocols, WebPKI, security-sensitive web APIs), design and implement web platform security features, improve browser reliability/performance/memory in a multi-threaded native codebase, and collaborate across teams. Requires strong software engineering fundamentals, proficiency in C/C++, familiarity with Rust, and experience debugging cross-platform native applications.

Mozilla is hiring a Senior Software Engineer for Firefox Security to advance Firefox's security architecture and cryptography stack (including WebPKI and PKI evolution), design and implement web platform security features, improve browser reliability/performance, and collaborate on security initiatives. Role expects strong C/C++ skills, familiarity or interest in Rust, multi-threaded and cross-platform debugging, and experience with cryptographic protocols. Salary range for Remote Spain: €58,000–€77,000.

Work on Firefox's security architecture and cryptography stack, design and implement web platform security features, improve browser reliability, performance, and memory efficiency, and collaborate with distributed teams. Role emphasizes C/C++ proficiency, familiarity with Rust, and experience with cryptography and multi-threaded native applications.

Work on Firefox's security architecture and cryptography stack, design and implement web platform security features, and improve browser reliability, performance, and memory efficiency. Role emphasizes C/C++ proficiency, familiarity with Rust, multi-threaded and cross-platform native development, and applied cryptographic/security knowledge while collaborating across distributed teams.