Tankred Hase
Founder at StashPay
Germany
Summary
🤩
Rockstar🎓
Top SchoolTankred Hase is a founder and seasoned software engineer with 14 years of experience building secure, user-focused applications and crypto tooling. Based in Portugal, he combines hands-on development in JavaScript/React Native with deep expertise in security, cryptography, and Bitcoin/Lightning infrastructure. He led cross-platform wallet projects at Lightning Labs and contributed critical cryptographic and UX improvements to high-profile open-source projects like BlueWallet and OpenPGP.js. As a consultant and coach he advises founders on architecture, testing, and continuous delivery, and has built production-grade key management and encrypted backup solutions. Notably, his open-source work includes a native random number generator integration for mobile wallets and performance-focused crypto refactors that improved real-world security and reliability. Outside work he recharges by backpacking and exploring global cuisines, bringing a curious, user-centered perspective to product design.
14 years of coding experience
12 years of employment as a software developer
Master of Science (MSc), Informatik, Master of Science (MSc), Informatik at Technische Universität München
German, English, French
Github Skills (24)
javascript10
md510
openpgp10
ios10
mobile-development10
react-native10
browser-extension10
bitcoin10
bitcoins10
android-development10
performance-optimization10
android10
cryptography10
mobile10
ui-design9
Programming languages (11)
Github contributions (5)
openpgpjs/openpgpjs
Mar 2012 - Jun 2016
OpenPGP implementation for JavaScript
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 releases, 224 commits, 65 PRs in 4 years 4 months
Contributions summary:Tankred's primary contribution involves implementing a faster MD5 implementation, specifically within the `src/ciphers/hash/md5.js` file. They modified the existing code by adding a new method and refactored the existing one. Additionally, they're responsible for modularizing symmetric crypto code and returning binary string format instead of hex. These contributions suggest the user is focused on performance optimization within the openpgpjs library, specifically related to cryptographic hash functions.
javascriptopenpgp
mailvelope/mailvelope
Apr 2016 - Aug 2017
Browser extension for OpenPGP encryption with Webmail
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:68 commits, 13 PRs, 55 pushes in 1 year 4 months
Contributions summary:Tankred implemented new features for the Mailvelope browser extension, specifically integrating HKP key search and import functionality. They developed UI components and integrated them with the backend to open new tabs using browser APIs. The user also refactored existing code by wrapping `mvelo.extension.sendMessage` in a generic helper function, improving code maintainability. Furthermore, they contributed to the settings page for the key server configuration.
browser-extensionencryptionopenpgpwebmail
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