Jaime Onzain
Senior Full Stack Developer at Cardano Foundation
Spain
Summary
👤
Senior🎓
Top SchoolJaime Onzain is a Senior Full Stack Developer based in Spain with 10 years of experience building decentralized and web-scale applications, particularly across the Cardano ecosystem. He designs and ships end-to-end solutions—from React/Ionic frontends and Capacitor plugins to Java backends and secure native integrations—working on projects like identity wallets, passwordless browser extensions, and on-chain e-voting. Jaime combines blockchain node and DevOps expertise as a long-running Cardano stake pool operator with production habits from Big Data and real-time streaming work at Accenture. He contributes open-source tooling (Capacitor plugins and wallet projects) and has practical experience implementing SSI, KERI, and cryptographic libraries for secure, offline-capable apps. Curious and pragmatic, he blends protocol-level understanding with hands-on product delivery, and has authored Spanish stake pool documentation and several reusable npm packages.
10 years of coding experience
5 years of employment as a software developer
Universidad de GranadaPOLITEHNICA București National University for Science and Technology
Github Skills (56)
digital-identity10
decentralized-identifiers10
cardano10
verifiable-credentials10
capacitor-plugin10
cordova9
java9
css9
mina8
swift8
wallet8
android8
ionic8
javascript8
plutus8
Programming languages (8)
Github contributions (5)
cardano-foundation/cf-cardano-ballot
May 2024 - Sep 2024
Cardano Ballot is a user-friendly, hybrid on- and off-chain voting system developed by the Cardano Foundation. Cardano Ballot leverages a set of backend services combined with frontend applications to facilitate voting within the Cardano Ecosystem.
Contributions:20 reviews, 29 PRs, 297 pushes in 4 months
cardanocardano-community
jimcase/C64-Wallet
Apr 2021 - Apr 2021
Contributions:62 commits, 48 pushes, 8 branches in 19 days
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