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.

The opportunity

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. Thunderbolt is designed to support flexible deployment models, integrations with AI tools and workflows, and use cases across desktop, web, and mobile.

We are looking for a Senior Engineering Manager to lead engineering execution, people management, and operating practices for Thunderbolt as it moves fr...