Mozilla

Senior Engineering Manager, AI Product (Thunderbolt)

Remote Canada · Senior · Full-time

Work authorization required$190k-$220kDetected 22 days ago

ReactReact NativeCode ReviewCI/CDLLMsRAGComplianceHIPAALeadershipCommunicationCollaborationMentoring

About the role

Thunderbolt is an open-source, cross-platform AI product initiative from the team behind Thunderbird.
It is being built around a clear principle: people and organizations should be able to use AI while staying in control of their data, infrastructure, model choices, and long-term options.
This role will help the team define what production-ready means at this stage: stronger release discipline, clearer ownership, higher user-facing product quality, stronger engineering practices, and a more scalable operating model.

Responsibilities

Lead engineering execution by clarifying priorities, ownership, timelines, risks, dependencies, and quality expectations.
Manage engineers and contractors, including coaching, feedback, prioritization, performance support, and team development.
Stay close to the codebase by contributing code, reviewing technical work, evaluating tradeoffs, and helping the team maintain momentum and quality.
Partner with technical and product leadership to turn product direction, AI strategy, user experience goals, and technical priorities into coordinated engineering plans.
Maintain high standards for code quality, testing, documentation, reliability, security awareness, maintainability, and release readiness.
Build strong product and architectural context across AI-enabled workflows, integrations, local-first or customer-controlled architectures, and release requirements.
Partner across product, design, enterprise-facing teams, and technical leadership to balance speed, user experience, privacy, quality, enterprise readiness, and long-term sustainability.
Lead hiring, onboarding, and resource planning as the Thunderbolt engineering team grows.
Create the clarity, ownership, and release confidence the team needs to ship quickly and sustainably.
Build the lightweight structure needed for a senior team to do its best work without slowing down experimentation.

Requirements

15+ years of professional software development experience, including significant experience in senior engineering leadership or complex product delivery roles.
5+ years of experience managing technical teams, including senior engineers or senior individual contributors.
A track record of leading a team that shipped polished, top-tier products held to a genuine standard of craft.
Strong ability to translate ambiguous product and technical direction into clear plans, ownership models, and delivery momentum.
Technical fluency with AI-enabled products, including the ability to evaluate tradeoffs across areas such as LLM applications, RAG workflows, agents, enterprise search, automation, on-device AI, or AI evaluation.
Experience improving engineering practices related to technical planning, code review, release readiness, testing, documentation, CI/CD, maintainability, or technical debt management.
Experience working in open-source or maintainer-style engineering environments.
Experience with compliance or security standards such as SOC 2, HIPAA, ISO 27001, or similar frameworks.
Experience helping take a product from zero to one in a startup or new product initiative.
Demonstrated experience delivering complex applications across multiple platforms, such as desktop, web, and mobile, using technologies such as Tauri, Electron, React Native, or comparable frameworks.
Experience with enterprise software, regulated environments, or similarly complex technical products, including security, privacy, compliance readiness, administration, integrations, and customer-controlled deployment models.
Practical experience with local-first, offline-capable, self-hosted, hybrid, on-premise, air-gapped, or other customer-controlled product architectures, including tradeoffs related to data storage, sync, privacy, reliability, and user experience.
Excellent communication skills around technical prioritization, release risk, ownership, quality expectations, and tradeoffs.
Bonus points for

Skills

Why Thunderbird?
Thunderbird is one of the world's most trusted open-source email applications, empowering more than 20 million people globally.
To learn more, visit www.thunderbird.net and www.thunderbolt.io.

Compensation

The salary ranges for this role are:
Canada: $190,000 - $220,000 CAD

Benefits

Raise the quality of the user-facing product experience while protecting codebase health, maintainability, privacy, and security.
In addition to competitive salaries, we offer a comprehensive benefits package designed to support your whole self.

Company info

stronger release discipline, clearer ownership, higher user-facing product quality, stronger engineering practices, and a more scalable operating model.
This is a hands-on technical management role.
The Senior Engineering Manager will manage a senior engineering team, stay closely engaged with the codebase and technical execution, coordinate work across employees, contractors, and technical partners, and help the team deliver a reliable, enterprise-ready open-source AI product.
The right person will bring strong people management skills, strong product engineering judgment, and enough technical depth to evaluate engineering work credibly, support architectural and implementation tradeoffs, and help the team keep shipping with quality.
We are looking for a Senior Engineering Manager to lead engineering execution, people management, and operating practices for Thunderbolt as it moves from R&D incubation into a more mature product and enterprise development phase.

Visa & Work Authorization

Applicants must reside in and have permanent work authorization for the country location(s) specified in the posting.

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