Patrick Klitzke
Staff Software Engineer (MG4) at Mercari, Inc.
Fukuoka Prefecture, Japan
Summary
👤
Senior🎓
Top SchoolPatrick Klitzke is a Staff Software Engineer at Mercari with 11 years of full‑stack experience building backend services in Go, Next.js websites, and mobile apps in React Native and Flutter. He previously led Kawazu Sakura Software as CEO and Head of Engineering, scaling the team and running both product and engineering operations in Japan. A seasoned freelancer and contractor for firms like Gigster and Codementor, he has a track record of shipping MVPs and client-facing apps across iOS and web. Patrick is also an active open-source contributor, notably improving the OnsenUI website and React components, demonstrating attention to front-end UX and documentation. With a strong academic background from Universität des Saarlandes and early internships at Facebook and in the Vulcanus Japan program, he blends rigorous technical foundations with cross-cultural product experience. Comfortable moving between hands-on coding and technical leadership, he often bridges product, engineering, and international collaboration.
11 years of coding experience
9 years of employment as a software developer
Master's degree, Computer Science, 1.1, Master's degree, Computer Science, 1.1 at Universität des Saarlandes
German, English, Japanese
Stackoverflow
1,549reputation
90kreached
26answers
15questions
Github Skills (15)
javascript10
react10
html9
css9
lessc8
web-components8
documentation8
metalsmith7
styled-components6
material-ui6
onsen-ui6
react-native6
cordova6
angularjs6
git5
Programming languages (17)
Github contributions (5)
OnsenUI/onsen.io
Jan 2016 - Aug 2016
onsen.io website repository
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:88 commits, 10 PRs, 62 pushes in 6 months
Contributions summary:Patrick primarily contributed to the `onsen.io` website repository, focusing on front-end updates and documentation. They addressed bug fixes related to the display of tags, modified blog post formatting, and updated website content, including React component documentation and guide updates. Additionally, the user was involved in merging and integrating different versions of the website, indicating work across various areas of the project.
onsen
philolo1/Horizon-Chat-MobX-OnsenUI
Jun 2016 - May 2018
Contributions:38 commits, 33 pushes, 2 branches in 1 year 11 months
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