Luboš Račanský
Java Developer at Wultra
Prague, Prague, Czechia
Summary
👤
Senior🎓
Top SchoolLuboš Račanský is a seasoned Java developer with over 16 years on the platform and more than a decade focused on security, currently building secure solutions at Wultra after leading authentication and authorization product components at BSC PRAHA that serve hundreds of thousands of users. He combines deep hands-on expertise in Java EE, Spring, PKI and smart card systems with experience in API design, integration of OTP providers, and maintaining backward compatibility in production services. Past roles include technical leadership at Gemalto where he bridged customer requirements, R&D and training, and CTO responsibilities coordinating R&D and quality processes at startups. An active educator and speaker, he runs an after-school computing club, teaches newcomers and has delivered internal and external talks—bringing a rare mix of production-grade security engineering and community-oriented mentorship. Fluent in Czech and based in Prague, he also pursues continuous learning in machine learning and cryptography through Coursera courses.
12 years of coding experience
15 years of employment as a software developer
Machine Learning, Machine Learning at CourseraBc., Computer science, Bc., Computer science at Czech Technical University in PragueZertifikat Deutsch, German, Zertifikat Deutsch, German at Goethe-InstitutGymnázium Benešov
Czech, English, German, French
Stackoverflow
1,671reputation
323kreached
38answers
18questions
Github Skills (130)
authentication10
fido-u2f10
security10
encryption10
multi-factor-authentication10
passkey10
passwordless-authentication10
push-notifications10
data-storage10
mobile-security10
sdk10
jwt10
protected10
cas10
bootstrapping10
Programming languages (13)
Github contributions (5)
wultra/user-data-store
Feb 2023 - Mar 2025
Contributions:3 releases, 140 reviews, 118 PRs in 2 years 1 month
banterCZ/geomapa-jekyll
Sep 2019 - Jun 2024
Contributions:1 review, 7 PRs, 48 pushes in 4 years 10 months
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