Kræn Hansen
Developer Experience Engineer at ElevenLabs
Roskilde, Region Zealand, Denmark
Summary
🤩
Rockstar🎓
Top SchoolKræn Hansen is a Developer Experience Engineer with 11 years of experience building developer tools and reliable developer-facing systems, currently at ElevenLabs after several roles at MongoDB and Realm. He has deep experience across databases, cross-platform SDKs, Electron apps and build tooling—rebuilding the Realm JavaScript/TypeScript SDK and shipping Realm Studio for local-first workflows. Kræn has improved developer UX at scale, from MongoDB Compass and VSCode integrations to build and caching improvements in high-profile open-source projects like React Native (Hermes/Android/iOS tooling). Based in Roskilde, Denmark, he blends systems-level engineering with product sensibility to reduce friction for other engineers and quietly specializes in build reliability and cross-platform developer flows.
11 years of coding experience
15 years of employment as a software developer
Gymnasium / High school Mathematics and IT, Gymnasium / High school Mathematics and IT at HTX RoskildeBachelor exchange Computer Science, Bachelor exchange Computer Science at ETH ZürichTechnical University of Denmark
English, Danish, German
Stackoverflow
1,555reputation
1.5mreached
24answers
13questions
Github Skills (21)
ios10
react-native10
xcode10
build-automation10
scripting9
mobile-development9
android9
shell9
script9
sh9
cross-platform8
app-framework8
javascript7
react7
camera6
Programming languages (15)
Github contributions (5)
facebook/react-native
Sep 2018 - Oct 2021
A framework for building native applications using React
Role in this project:
Mobile Developer (Android/iOS)
Mobile Developer (Android/iOS)Contributions:36 reviews, 2 commits, 12 PRs in 3 years 1 month
Contributions summary:Kræn primarily contributed to improving the React Native build process and tooling. They fixed issues with the Android build process, specifically addressing status code handling. The user also updated build scripts to improve iOS build configuration by integrating Xcode build settings. Furthermore, they made improvements to Hermes build and caching, ensuring builds are faster and more reliable by implementing ccache and resolving build errors.
reactnative-applicationsmobile-developmentreact-nativeandroid
NationalMuseumofDenmark/cip.js
Jan 2015 - Mar 2017
Contributions:2 PRs, 34 pushes, 2 branches in 2 years 2 months
cumulusobject-relationalrelationalcip
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