Jobs at Mozilla

Execute digital marketing and communications across social, email, blog, and other channels. Create and publish content, manage campaign calendars, track performance metrics, support email automation, collect customer feedback, and coordinate with internal teams and vendors to drive brand awareness, user growth, and product adoption.

Lead and manage the Thunderbolt engineering team to transition an R&D AI product into a production-ready, enterprise-grade open-source product. Drive execution, hiring, release discipline, code quality, CI/CD, cross-platform delivery, and collaboration with product and design while remaining hands-on with code, architecture, and technical tradeoffs.

Execute day-to-day digital marketing across social, blog, email, and other channels. Draft and publish content, manage campaign calendars, track engagement metrics, support email automation, collect customer feedback, coordinate with teams and vendors, and ensure brand-aligned messaging to drive awareness, user growth, and product adoption.

Lead and unify Mozilla's global editorial vision across platforms, curating impactful stories and collaborating across teams to shape narratives about technology's future.

Lead and grow a senior engineering team to transition Thunderbolt from R&D to production-ready AI product. Drive execution, release discipline, code quality, cross-platform delivery, and enterprise-readiness while staying hands-on in code reviews and technical planning. Partner with product, design, and security to balance speed, privacy, and maintainability.

As a Senior Marketing Data Scientist, you will conduct quantitative analyses, manage marketing tests, and provide actionable insights to enhance marketing performance and investment effectiveness.

Contract senior technical recruiter responsible for full-cycle hiring: partner with hiring managers, source and screen candidates (using tools like HireEz and LinkedIn), assess technical skills, manage the recruitment process through ATS (Greenhouse preferred), drive diverse pipelines, collaborate with compensation/legal/finance teams, and use data analytics to improve recruitment strategies.

Contract senior technical recruiter responsible for full-cycle hiring: partnering with hiring managers, sourcing and screening candidates via tools like HireEz and LinkedIn, assessing technical skills, managing offers, building diverse pipelines, collaborating with compensation/legal/finance, and using analytics to improve strategies.

Lead full-lifecycle Go-To-Market hiring across EMEA, sourcing senior commercial talent, building diverse pipelines, advising GTM leaders on market intelligence, negotiating complex international offers, and maintaining Greenhouse ATS hygiene and hiring metrics to optimize recruitment processes.

The Staff Data Scientist will own the analytical strategy for Firefox, driving data-informed decisions through measurement frameworks, experiments, and user growth analysis, while mentoring other data scientists.

Lead development and improvement of Firefox's Gecko accessibility engine: write and test C++ code, debug multi-process/multi-threaded and OS-specific issues, collaborate with design and product teams, influence web accessibility standards, build infrastructure exposing the web platform to assistive technologies, and ensure memory and performance targets are met.

Work on Firefox accessibility by improving the Gecko accessibility engine: write and test C++ code, debug multi-process/multi-threaded and OS-specific issues, collaborate with designers and other browser teams, influence web accessibility standards, and build infrastructure to expose the web platform to assistive technologies.

Design, fine-tune, evaluate, and deploy LLM-driven, user-facing browser features using RAG, embeddings, prompt engineering, and modern ML tooling. Lead end-to-end model lifecycle, run production experiments, collaborate with product and engineering, and document and review work with an emphasis on privacy, latency, and usability.

The Staff Data Scientist will lead analytical strategies for Firefox, focusing on product growth, measurement frameworks, and mentoring data scientists while guiding data-driven decisions.

Design, build, and maintain scripts, APIs, and automations for workplace systems and AI/agent integrations. Develop integrations between collaboration tools and identity platforms, implement observability, improve onboarding/offboarding workflows, and collaborate with IT, Security, and People teams to embed secure, scalable automation. Participate in pilots for LLMs/agents and contribute to documentation, code review, and reusable integration libraries.

Design, build, and maintain scripts, APIs, integrations and agentic automations for workplace systems (collaboration tools and identity platforms). Implement monitoring and observability, automate onboarding/offboarding and access workflows, integrate LLMs/agents for productivity, collaborate with IT/security/People teams to ensure compliance, and contribute to code review, documentation, and reusable integration templates.

Lead iOS development for Thunderbird: design and improve mobile architecture, optimize performance and security, debug and test across unit/integration/automation, review and document technical decisions, own projects end-to-end, and collaborate with product, UX, and open-source contributors to deliver a scalable, accessible, and maintainable iOS app.

Lead design and development of Thunderbird's iOS app, improving architecture, performance, reliability, security, and accessibility. Own projects end-to-end, debug and test at unit/integration/automated levels, review code, mentor contributors, and document technical decisions while collaborating with product, UX, and open-source community.

Lead architecture and implementation of production-grade multi-agent, LLM-driven systems and developer tooling. Design orchestration layers, integrate/combine commercial and open-source models, establish benchmarking and evaluation practices, mentor engineers, and balance rapid prototyping with long-term scalable architectures for a new browser automation platform.

Lead data-driven strategy by partnering with senior executives, design and deliver sophisticated analytical solutions on large-scale data, build trusted cross-functional relationships, and mentor data scientists to raise analytical quality across the organization.