A lot of companies say they’re “mission-driven.” Our unique corporate structure guarantees that every decision we make upholds our mission: to ensure the internet remains open and accessible. Beholden to neither shareholders nor investors, Mozilla Corporation is wholly owned by the not-for-profit Mozilla Foundation. Along with our communities of 20,000+ contributors and collaborators, Mozilla Corporation’s staff designs, builds, and distributes software that allows people to enjoy the internet on their own terms. Our flagship product — the Firefox browser — has expanded into a family of products that protects users and alerts them of risks, safeguards passwords and provides a secure VPN (with more to come). By maintaining a safe, open internet we're helping humanity, while also helping the individual humans employed here to reach their personal and professional goals. With a relatively small team serving hundreds of millions of people, a culture of exploration, and a commitment to mentorship, opportunities abound to learn and grow at Mozilla.
Remote · Canada
You will build and maintain internal developer infrastructure, focusing on CI/CD, observability, and Kubernetes optimization. Additionally, you will guide technical decision-making and promote engineering standards to improve developer productivity.
Remote · Canada
You will deliver major features and architectural improvements across the Add-ons stack, including moderation pipelines and developer tools. You will also establish engineering standards for production readiness, observability, and CI/CD to ensure reliable and scalable platform operations.
Remote · Canada
The Staff Operations Engineer will lead the design, reliability, and evolution of hybrid-cloud and workplace infrastructure while driving complex, high-impact technical initiatives. This role involves cross-team collaboration to unify solutions, improve system reliability, and mentor engineers to raise technical standards.
Remote · Canada
The Senior Software Engineer will build and maintain internal developer infrastructure, focusing on CI/CD, observability, and Kubernetes optimization. They will also guide technical decision-making and design agentic workflows to improve developer productivity.
Remote · Canada
Design, build, and improve systems to reliably process data at scale while setting best-practice standards for the data organization. Drive cross-functional projects and mentor teammates to develop engineering excellence across the platform.
Remote · Canada
You will own the implementation of Thunderbolt product features from concept through launch, working across the stack to build AI-powered chat, search, and enterprise workflow tools. You will also collaborate with cross-functional teams to ensure features are usable, reliable, and provide measurable value to users.
Remote · Canada, Germany, United Kingdom, United States
The Major Gifts Officer is responsible for identifying, cultivating, and closing major gifts ranging from $50,000 to over $1M. They will manage a portfolio of donors, document interactions in Salesforce, and collaborate with leadership to create compelling cases for support.
Remote · Canada
The Staff Security Engineer will maintain and mature the Information Security Management System (ISMS) while leading ISO 27001 and SOC 2 compliance programs. They will partner with cross-functional teams to drive policy creation, manage audit execution, and translate compliance requirements into practical workflows.
Remote · Canada
You will own the shared foundation and building blocks that enable external tools and internal teams to interact with the Firefox browser. This involves defining the product strategy, ensuring security and reliability, and advancing open standards like WebDriver BiDi.
Remote · Canada
Build functional prototypes and production-ready user experiences for the Thunderbolt AI client directly within the codebase. Define interaction patterns for AI-powered workflows and collaborate cross-functionally to translate ambiguous product ideas into usable enterprise tools.
Remote · Canada
You will build functional prototypes and product experiments directly in the codebase to shape the Thunderbolt enterprise experience. You will also define interaction patterns for AI-powered features while collaborating with cross-functional teams to ensure usability and technical quality.
Remote · Canada
Define and drive the product strategy and roadmap for search features within the Firefox Desktop browser. Lead end-to-end experimentation and collaborate with cross-functional teams to deliver privacy-respecting, AI-powered search experiences.
Remote · Canada
You will profile and analyze performance bottlenecks across the Firefox codebase while developing strategies to improve browser speed. Additionally, you will collaborate with cross-functional teams to implement performance improvements and educate engineers on writing performant code.
Remote · Canada
Lead backend development and maintain server-side logic while taking end-to-end ownership of services in production. Collaborate with cross-functional teams to ensure system reliability, monitor performance, and participate in on-call support rotations.
Remote · Canada
You will lead backend development and own the end-to-end lifecycle of services, including deployment, operation, and maintenance in production. You will also collaborate with cross-functional teams to ensure system reliability, security, and performance while participating in on-call rotations.
Remote · Canada
Own and scale Mozilla's web bug bounty program, managing the interface with external researchers and platforms like HackerOne. Lead the triage and technical validation of vulnerability reports and partner with engineering teams to drive remediation.
Remote · Canada
The Engineering Manager will lead a geographically distributed team to drive improvements to the Firefox Desktop user interface. They are responsible for delivering high-quality software, managing team performance, and fostering an inclusive environment.
Remote · Canada
You will set the strategy and roadmap for Marketing Data Science while leading the development of core capabilities in performance and brand marketing. You will also partner with cross-functional teams to translate data-driven insights into practical recommendations that drive Firefox's growth.
Remote · Canada
You will define and execute an enterprise strategy while identifying and advancing strategic partnerships in sovereignty-focused markets. This involves developing commercial models, leading negotiations, and translating technical capabilities into clear enterprise propositions.
Remote · Canada
You will design, develop, and evolve the Thunderbird iOS application while establishing a strong technical foundation for the product. You will collaborate with cross-functional teams and the open-source community to deliver high-quality, scalable, and secure mobile experiences.
