Felix Rieseberg is an engineer focused on making people productive with AI, currently working on Claude at Anthropic and leading efforts like Claude.ai, Cowork, and Code Desktop. He co-maintains Electron and a large set of open-source projects - highlighting Language Model Builder, MCBP, windows95, macintosh.js, and clippy - and publishes many technical tutorials and tools covering Electron, debugging native crashes, code signing, PWA integration, WebGL, CI deployment, and more. He describes an appetite for building fun and sometimes whimsical projects and points to a comprehensive GitHub list of work and smaller experiments.
His prior roles include leading Web Infrastructure and Desktop App teams at Notion (2023-2025), heading Payments Integration Experience at Stripe (2021-2023), and serving as Senior Staff Engineer and Engineering Manager at Slack (2016-2021) where he supported Electron and desktop clients. Earlier positions include Open Source Engineer at Microsoft (2014-2016), Startup Developer Evangelist (2011-2014), and Executive Editor of Apfeltalk.de (2007-2011). Academically, he holds an MSc from the University of Oxford’s Internet Institute and studied at the University of Duesseldorf. He has authored O’Reilly material on Electron and Windows app development and once developed the indie game Awesome Zombie Sniper, which reached over a million players.
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