Tomislav Horaček
Zagreb, Croatia
Summary
🤩
Rockstar🎓
Top SchoolTomislav Horaček is a front-end-focused software engineer with nine years of professional experience and a Master’s in Computer Software Engineering from the University of Osijek. He began as a PHP back-end developer but transitioned to modern JavaScript frameworks, with React as his primary focus and a strong emphasis on modular, component-based architecture. Tomislav has significant full-stack experience from IOHK, where he contributed to the open-source Daedalus cryptocurrency wallet by migrating Ledger JS integrations and implementing hardware wallet address verification for Ledger and Trezor. As a former Head of Engineering and CEO, he blends hands-on development with product and team leadership, able to drive both implementation and strategic decisions. Based in Zagreb, he is passionate about reusable, easy-to-extend code and solving nuanced integration challenges in security-sensitive environments. An attention to detail and experience handling breaking library changes make him particularly effective at maintaining robust integrations in complex ecosystems.
8 years of coding experience
10 years of employment as a software developer
Master’s Degree, Computer Software Engineering, Master’s Degree, Computer Software Engineering at Faculty of Electrical Engineering-mag.ing.comp
English, Czech, Croatian
Github Skills (10)
javascript10
hardware-wallet10
trezor10
react9
cardano9
api8
typescripts8
typescript8
typescript-types8
apidoc8
Programming languages (2)
Github contributions (5)
input-output-hk/daedalus
Apr 2021 - Dec 2022
The open source cryptocurrency wallet for ada, built to grow with the community
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:180 reviews, 163 commits, 240 PRs in 1 year 8 months
Contributions summary:Tomislav's contributions primarily focused on updating and migrating the Ledger JS library to version 3.0.0 and later to version 4.0.0, significantly impacting the Daedalus wallet's hardware wallet integration. This involved modifying core files to accommodate breaking changes within the LedgerJS library, including changes to transaction signing and delegation certificate handling. Furthermore, they implemented and verified hardware wallet address verification for both Ledger and Trezor devices. The user also addressed native token handling issues for Trezor transactions.
adablockchainwalletplutuscryptocurrency-wallet
JamesRobertKelley/daedalus
Jan 2020 - Jan 2020
Daedalus - cryptocurrency wallet
Contributions:4 pushes in 1 day
daedalusblockchainwalletcryptocurrency-walletcryptocurrency
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.