Staff Software Engineer, Web Application Services

Thunderbird is the open source email client used by more than 20 million people, and it is expanding past the desktop application. This Staff role is on the Services team, which builds the web products behind that expansion: an appointment calendar, and secure file storage and transfer.

It is an individual contributor role with real architectural ownership rather than a management one, and the brief is deliberately broad, covering technical direction, prototypes, and the patterns that let the Services products grow. The commercial angle is unusual for an open source project: these paid services cover the cost of hosted offerings alongside user donations, which is what keeps the applications free, so growing subscribers is part of the remit.

Thunderbird Technologies Corporation is nonprofit-owned and part of the Mozilla family, but a separate entity from Mozilla Corporation with its own compensation and benefits. The team is around 65 people across seven countries. Remote within the United States; the same role is posted for Canada at CAD 155,000 to 190,000.