Mozilla - 0to1 Engineer

• Solid software engineering fundamentals — you write code that others can read, and you know the difference between a prototype and production • Demonstrated comfort working with coding agents and AI-assisted development tools (Cursor, Claude Code, or equivalent) as a force multiplier, not a crutch • Experience with the open source AI stack: inference, orchestration, evaluation, or adjacent layers — you've built something real on top of open models • Fluency in Python and/or TypeScript, with enough range to pick up whatever the project needs • Experience building APIs, developer-facing tools, or integrations — you understand what it means to build for other builders • A strong sense of what makes a prototype useful for a conversation, not just technically functional • Comfort working in public — open repos, community feedback, building in the open • Strong written communication; you can explain what you built and why, to a technical audience, without over-engineering the explanation • What success looks like • A steady output of working prototypes that make Mozilla's open source AI work tangible and demonstrate what's possible on open infrastructure • Prototypes that get picked up — forked, extended, written about, or used as the basis for community conversations and events • A genuine voice in the open source AI developer community, built through what you ship and share • Close, productive collaboration with the community and social media team so that what you build has distribution and reach • Engagement model • Engagement model • Fixed-term, contract-based engagement • Flexible hours and outcome-oriented working style • Work produced through this engagement is expected to be developed in the open where appropriate, including public repositories and community-facing channels • This opportunity is scoped around specific prototyping and ecosystem-facing deliverables, rather than a permanent employee role • Budget for this opportunity: $200,000–$227,250 annualized equivalent. • $200,000–$227,250 annualized equivalent • This is a fixed-term contract opportunity, not a permanent employee role. Final contract terms — including scope, weekly hours, duration, and payment structure — will be determined based on the needs of the engagement and the selected contractor’s experience. This posting reflects Mozilla’s good-faith budgeted range for the work at the time of posting. • Applicant Privacy Notice