Konstantin Ullrich
Hardware Wallet Czar at dEURO.com - dEURO Association
Bavaria, Germany
Summary
👤
Senior🎓
Top SchoolKonstantin Ullrich is a versatile software engineer with nine years of hands-on experience building blockchain-enabled systems, full-stack applications, and privacy-focused messaging tools. As Hardware Wallet Czar at Cake Labs and co-founder of the dEURO Association, he blends hardware security, crypto payments, and product-minded engineering to simplify real-world transactions like maker-space machine hours. His open-source work includes substantive frontend and backend improvements to the Session Desktop onion-routing messenger, showing a focus on UX, performance, and privacy. Previously he drove blockchain and accounting integrations at Ritablock and led loyalty-tech projects at Loyalty Partner, giving him a rare mix of financial domain knowledge and distributed-systems expertise. Based in Bavaria, he’s a tinkerer at heart who turns experimental prototypes into production-ready components for secure value exchange.
9 years of coding experience
6 years of employment as a software developer
Informationstechnologie, Informationstechnologie at Berufsschule für Kommunikationselektronik München
German, English
Github Skills (12)
searchbar10
typescript10
typescripts10
react10
typescript-types10
messenger10
searchbox10
front-end-development9
javascript9
back-end-development8
backend8
ui-design7
Programming languages (10)
Github contributions (5)
oxen-io/session-desktop
Feb 2020 - Oct 2020
Session Desktop - Onion routing based messenger
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:40 commits, 19 PRs, 35 comments in 7 months
Contributions summary:Konstantin primarily focused on enhancing the Session Desktop application's frontend and backend functionalities. Their contributions included refactoring UI elements in `ConversationHeader.tsx`, implementing advanced search features within `search.ts`, and addressing bug fixes in `background.js`. Furthermore, the user added a numeric TTL countdown and style-guided context menus. These changes suggest a focus on improving user experience and optimizing application performance.
securechatonionsignal-protocolrouting
Zusammen-zu-Hause/Zusammen-Zuause-compass
Mar 2020 - Dec 2020
Zusammen Zuhause is a web application for collecting and offering online events for everyone staying at home
Contributions:31 PRs, 54 pushes, 38 branches in 8 months
eventsdjangojavascriptweb-applicationcollecting
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