Ondrej Hirjak
Senior Software Engineer at Erste Digital
Vienna, Austria
Summary
👤
Senior🎓
Top SchoolOndrej Hirjak is a senior software engineer and architect based in Vienna with over a decade of professional experience and more than 20 years involved with technology. He designs and ships production-critical systems across finance, trading, Web3 and embedded domains—recently leading insider trading detection work at Erste Digital and OTC trading platform efforts at Wincent. Ondrej combines hands-on engineering with product-facing collaboration, having worked closely with traders, compliance officers and counterparties to turn regulatory and business requirements into reliable systems. He has led Web3 product development (non-custodial wallets and a Cardano DEX), run development teams, and managed roadmaps and releases, demonstrating both technical depth and delivery ownership. His background spans low-level kernel and driver work at NVIDIA to large-scale banking and casino systems, revealing an unusual comfort shifting between kernel, cloud and crypto stacks. Born for coding, he pairs rigorous academic training in software engineering with practical experience in operations, DevOps and embedded optimization.
11 years of coding experience
18 years of employment as a software developer
PhD (unfinished) Software Engineering, PhD (unfinished) Software Engineering at Faculty of Informatics and Information Technologies, Slovak University of Technology
slovak, czech, German, English
Github Skills (51)
filesystem10
spellchecker10
tox10
peer-to-peer10
security10
cryptography10
synchronization10
network10
encryption10
stemming9
ldap9
ftps9
ftp9
websocket9
spelling9
Programming languages (3)
Github contributions (5)
isotoxin/toxcore-vs
Jan 2015 - Mar 2018
Contributions:42 commits, 1 PR, 40 pushes in 3 years 1 month
static-buildtoxcorelibsvisual-studio
isotoxin/isotoxin
Feb 2015 - Mar 2018
Contributions:45 releases, 129 commits, 125 pushes in 3 years 1 month
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