Application Engineer

About Jan Jan is an open-source AI platform, built in public and downloaded over six million times. We put intelligence directly in people's hands: run open models locally or plug in the providers you choose, with your data staying yours. We move fast, open-source what we can, and grow through the people who build and use it. If you want your work to reach millions and stay open, this is the place.

The Role We are looking for an Application Engineer to build and ship the Jan desktop app across platforms. You will own the application end to end, from architecture through packaging and distribution, working full stack across the web and native layers. This is a build-and-ship role, not a UI design one. You will care about how the app is put together, how it performs, and how cleanly it gets into users' hands on every platform. This is a lean, agent-native setup, so you will orchestrate coding and execution agents to move fast while keeping the judgment to get the hard parts right.

What You'll Do

• Build and maintain the Jan desktop app across macOS, Windows, and Linux using Tauri.
• Work full stack across the app: React and Node.js on the application layer, Rust on the native side.
• Own packaging, builds, and distribution: installers, auto-update, release pipelines, and code signing.
• Give Linux first-class support: packaging and distribution across common distros.
• Integrate local model runtimes and app features end to end.
• Work agent-natively as your default, running agents in parallel with your own review and guardrail discipline.

What We Look For

…