[Hiring] Staff Product Engineer, Enterprise AI @Mozilla

Role Description

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.

• 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.

Qualifications

• 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.
• 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.
• 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.

Requirements

• Experience with self-hosted, private cloud, sovereign, or regulated deployment environments.
• Experience with Docker, Kubernetes, CI/CD, and cloud deployment.
• Experience working with European enterprise or public sector customers, or with data residency and sovereignty requirements.
• Experience supporting security reviews, privacy assessments, or enterprise procurement processes.
• Open-source contributions, or experience in open, highly collaborative engineering environments.

Benefits

• Fully remote work & schedule flexibility.
• Company-provided laptop.
• Annual bonus program.
• Monthly remote work stipend.
• Annual professional development stipend.
• Access to Coursera learning platform.
• Industry conferences.
• Company all-hands and team gatherings.
• 24 days PTO per year (prorated).
• Your birthday off.
• Year-end company shutdown.
• 9 wellbeing days.
• Public holidays.
• Other paid leave.
• Quarterly wellbeing stipend for personal/family activities.
• 401(k) contributions.
• Health, dental, & vision insurance.
• Disability insurance.
• Life insurance.
• Employee assistance program.
• Paid parental leave.
• Paid sick days.