Staff Product Engineer, Enterprise AI
Firefox · Remote
About this role
## Why Thunderbird? Thunderbird is one of the world’s most trusted open-source email applications, empowering more than 20 million people globally. At MZLA (the team behind Thunderbird), we build privacy-respecting communication and productivity tools that help people manage their digital lives while staying in control of their data. We’re open source by design—developed transparently and in collaboration with a global community of contributors. We work collaboratively and inclusively, with a shared commitment to putting users first. We’re a small but growing company (60+ people) distributed across seven countries. As Thunderbird evolves beyond a single desktop application, we’re expanding across desktop, mobile, paid services, and new product experiences that help people and organizations work more effectively without giving up control to big tech ecosystems. Our revenue model combines user donations (to keep Thunderbird freely available) with paid services (to support hosted offerings and long-term sustainability). **Note about MZLA and Mozilla:** MZLA Technologies Corporation is the nonprofit-owned company behind Thunderbird and part of the Mozilla family. MZLA is separate from Mozilla Corporation and has its own compensation programs, benefits, and employment policies. Learn more: http://www.thunderbird.net and www.thunderbolt.io --- ## The opportunity **Thunderbolt** is an open-source, cross-platform AI product initiative from the team behind Thunderbird. It’s 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.** Thunderbolt supports flexible deployment models, integrations with AI tools and workflows, and use cases across desktop, web, and mobile. We’re looking for a **Staff Product Engineer** to help build Thunderbolt as it moves from early product development into enterprise use cases. This role sits at the intersection of full-stack product engineering, AI-enabled product development, enterprise workflows, technical execution, product judgment, and post-launch iteration. ### What you’ll do - Work across the stack to turn product direction, user needs, partner feedback, and enterprise requirements into complete product features. - Build AI-powered capabilities including **chat, search, research, workflow automation, administration, integrations, and enterprise workflows**. *(Job description text appears truncated after “This is not a role focused only on...”.)*
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