Staff Product Engineer, Mozilla

• 10+ years of professional software engineering experience, including significant time building and shipping production applications with Staff-level scope and impact
• Strong full-stack engineering skills, including modern TypeScript or JavaScript, component-based front-end frameworks, and back-end services, APIs, and integrations
• Meaningful experience working directly with customers, partners, or systems integrators in a technical capacity where you also wrote the code. Forward deployed, embedded, consulting, and implementation engineering work all count
• Experience building or supporting AI-enabled applications, such as LLM platforms, RAG systems, agents, enterprise search, or data connectors
• Solid understanding of enterprise deployment concerns, including authentication and identity providers, access control, self-hosted and hybrid infrastructure, observability, and reliability
• Judgment about when to build something custom, when to generalize it into the product, and when to push back on a request
• Clear communication skills with both technical implementers and non-technical stakeholders, including being honest about what the product can and can’t do today
• Strong collaboration skills, including experience working closely with product managers, designers, engineers, and other cross-functional stakeholders
• Comfort operating independently in an early-stage product where requirements, architecture, and processes are still taking shape
• Strong communication and documentation skills are essential for effective collaboration across time zones and disciplines
• We may consider candidates with strong skills but less than the required experience. Title, level and compensation will be determined based on qualifications and experience

Desirable

• Thunderbird is expanding beyond email with Thunderbolt, an open-source AI client designed for organizations that need more control over their data, infrastructure, and model choices
• We’re looking for a Staff Full-Stack Product Engineer: a full-stack engineer who ships production code and works directly with the partners and enterprise customers adopting Thunderbolt
• You’ll spend most of your time in the codebase, building the features, integrations, and customizations that real deployments need
• The rest of your time goes to working alongside technical partners to get those deployments running and keep them healthy
• Thunderbolt is delivered largely through technical partners and systems integrators who own the day-to-day customer relationship
• You’ll be the engineer behind them. You’ll understand how a customer’s environment actually works, turn that understanding into working software, and fix the hard problems that need someone who knows the code
• Build and ship full-stack features, integrations, and customer-specific customizations in the Thunderbolt codebase, from front-end UI through APIs, services, and deployment configuration
• Work directly with technical partners and enterprise customers to understand their environments, requirements, and constraints, and turn them into technical plans and working software
• Support pilots, proofs of concept, and early production deployments, including partner-hosted and customer-controlled environments
• Diagnose and fix complex issues across the application, infrastructure, identity and access, integration, and data-access layers, including bugs and regressions that need a code change and a release
• Maintain customer-specific customizations over time so they keep working as the core product evolves
• Spot which customer requests should become general product capabilities, and work with product and engineering to build them that way rather than as one-offs
• Bring real-world deployment feedback into roadmap and prioritization discussions
• Write the documentation, deployment guidance, and runbooks that let partners handle routine issues on their own
• Use AI-assisted development tools thoughtfully to move quickly while keeping strong judgment about quality, security, and maintainability
• In your first few months, you’ll help land Thunderbolt’s first enterprise deployments. That means shipping the customizations those customers need, getting partner-hosted deployments stable, and fixing the issues that only show up in real environments
• Over time, success means each new deployment takes less custom work than the last. You’ll have turned one-off requests into reusable product capabilities, and partners will be able to handle routine issues without pulling in engineering
• You’ll work with our passionate staff and open-source community members from all over the globe to support the mission and objectives of Thunderbird Technologies Corporation. In this role, you’ll also collaborate closely with engineering, product, design, enterprise-facing teams, technical partners, contractors, and external contributors working on Thunderbolt