Hendrik Liebau
Software Engineer at Vercel
Germany
Summary
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Rockstar🎓
Top SchoolHendrik Liebau is a software engineer with 12 years of experience, currently contributing to Vercel from Germany. He brings deep full‑stack expertise in React and tooling, having made notable open-source contributions to flagship projects like Next.js and React that improve server components, source maps, TypeScript DX, and build-time diagnostics. His work spans complex areas such as server-client data flow for React Server Components, HMR for server components, and TypeScript integration in bundlers like Rollup, reflecting a focus on developer experience and reliable rendering behavior. Trained in computer science at Ulm University, Hendrik combines rigorous engineering with a penchant for subtle infrastructure improvements that quietly reduce friction for thousands of developers.
12 years of coding experience
Diploma of Education, Computer Science, Diploma of Education, Computer Science at Ulm University
Stackoverflow
43reputation
447reached
0answers
1question
Github Skills (28)
javascript10
testing10
typescript10
nextjs10
bundle10
standard-library10
rollupjs10
typescript-types10
declarative10
web-framework10
c-library10
common-library10
typescripts10
frontend10
bundling10
Programming languages (7)
Github contributions (5)
vercel/next.js
Mar 2024 - Apr 2025
The React Framework
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:309 reviews, 436 PRs, 912 pushes in 1 year 1 month
Contributions summary:Hendrik made significant contributions to the Next.js framework, focusing on various aspects of the app router. These contributions include enabling source map loading for server and React components, enhancing the initial setup for TypeScript projects, fixing bugs related to component rendering and prefetching, and improving the developer experience (DX) by adding support for the server components HMR cache and for showing revalidate/expire columns in the build output. The user's work primarily involved modifying build processes, test utilities, and component rendering logic, utilizing TypeScript.
reactbrowserssgserver-renderingjavascript
facebook/react
Jan 2018 - Jan 2018
The library for web and native user interfaces.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:71 reviews, 1 commit, 36 PRs in 1 day
Contributions summary:Hendrik primarily contributes to the `react` repository, focusing on features related to React Server Components and Flight. They've worked on bug fixes and enhancements related to the server-client communication and data fetching, particularly dealing with error handling and the resolution of asynchronous components. They also contributed to the refactoring of the server-side code by updating and improving the rendering and data serialization, with a focus on maintaining state and resolving dependencies.
user-interfacereactjavascript-libraryjavascriptdeclarative
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