Staff Software Engineer, Web Application Services
Firefox · Remote US
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 Thunderbird, we build privacy-respecting communication and productivity tools that help people manage their digital lives while staying in control of their data. We are open source by design—developed transparently and in collaboration with a global community of contributors. We work collaboratively, inclusively, and with a shared commitment to putting users first. Our small but growing distributed team includes more than 65 people across seven countries. As Thunderbird evolves beyond a single desktop application, we’re expanding across desktop, mobile, paid services, AI offerings, and enterprise-facing work to build independent, privacy-respecting alternatives to big tech ecosystems. Our revenue model combines user donations (to keep Thunderbird freely available) with paid services that cover the costs of hosted offerings and support long-term sustainability and continued innovation. **A note about Thunderbird and Mozilla** Thunderbird Technologies Corporation is the nonprofit-owned company behind Thunderbird email and a growing portfolio of products. While part of the Mozilla family, Thunderbird is a separate entity from Mozilla Corporation and Mozilla Foundation with its own compensation programs, benefits, and employment policies. Learn more: https://www.thunderbird.net --- **The opportunity** As a **Staff Software Engineer, Services**, you’ll help shape the architecture and technical direction of web-based products that extend Thunderbird beyond email. The Services team is currently focused on building offerings such as an appointment calendar and secure file storage and transfer solutions—creating valuable experiences for users while supporting additional revenue streams for Thunderbird. This is a Staff-level individual contributor role with significant technical ownership and influence. You’ll work with designers, engineers, and community members to: - Write code and build prototypes - Solve complex problems - Make technical decisions that shape our products - Take a holistic view of our code and systems to establish architecture and software patterns that enable Services products to evolve and scale You’ll also tackle broad, ambiguous problems with direct impact on our goals, from improving technical architecture to helping grow Services users.
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