Thunderbird

Software Development11-50

About Thunderbird

Thunderbird is the leading free and open-source email, calendaring, newsfeed, and chat client with more than 20 million active monthly users across Windows, macOS, and Linux. One of Thunderbird's core principles is the use and promotion of open and decentralized standards.

Thunderbird is part of MZLA Technologies Corporation, a wholly-owned subsidiary of the Mozilla Foundation.

Thunderbird

About Thunderbird

Open Positions(26)

Communications Lead UK (Contract)

Senior Strategic Account Executive, Firefox Enterprise (France)

Integrated Marketing Manager - UK

Integrated Marketing Consultant - France

iOS Engineer, Mobile

Executive Assistant

Senior Marketing Data Scientist

Senior Software Engineer, WebExtensions

Sr Staff Mixed Methods User Researcher

Senior Strategic Account Executive, Firefox Enterprise (DACH)

Senior Solutions Engineer (DACH), Firefox Enterprise

Senior Rust Software Engineer

Head of Editorial + Platforms, Mozilla Ecosystem

Senior Application Engineer

Senior Fundraising Strategist

Staff Quantitative User Researcher

Senior Product Manager, Advertising Products

Director, Grassroots Engagement

Head of Global and Strategic Intelligence

Staff Data Scientist, Firefox

Senior Data Engineer

Senior Software Engineer - Engineering Workflow and CI

Social Media & Content Strategist (Open-Source AI)

Sr Staff Quantitative User Researcher

Community Manager (Open-Source AI)