Amadej Kastelic
Senior Software Engineer at Veza
Ljubljana, Slovenia
Summary
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Rockstar🎓
Top SchoolAmadej Kastelic is a Senior Software Engineer with eight years of experience building scalable back-end systems, identity platforms, and banking integrations across startups and fintech. Based in Ljubljana, he has driven production services at Bitstamp and contributed to Rekono’s identity provider features like WebAuthn/FIDO and OpenID integrations. He helped migrate and scale systems through monolith refactors and microservices at OSI/Rekono, then continued to deliver security- and compliance-focused engineering at Veza prior to its acquisition by ServiceNow. Since 2024 he runs a consultancy helping teams adopt Nix/NixOS and IaC to achieve reproducible, low-friction environments, and now continues at ServiceNow as a senior engineer. Colleagues describe him as a pragmatic architect who pairs automation-first tooling with practical delivery, often turning complex banking and auth requirements into auditable, maintainable systems. His mix of hands-on engineering, consulting, and domain experience in payments and identity makes him effective at bridging product needs and operational excellence.
8 years of coding experience
6 years of employment as a software developer
Engineer's degree Computer and Information Sciences General, Engineer's degree Computer and Information Sciences General at University of Ljubljana, Faculty of Computer and Information Science
Stackoverflow
596reputation
51kreached
14answers
0questions
Github Skills (117)
xcb10
reload10
linux10
camera10
wayland10
flash10
image-editing10
scraper10
playwright-python10
tiling10
x1110
qt9
twitter9
youtube9
nixos9
Programming languages (11)
Github contributions (5)
amadejkastelic/discord-video-embed-bot
Jul 2023 - Mar 2025
A discord bot that automatically embeds videos from various sources that do not support embeding.
Contributions:92 releases, 2 reviews, 68 PRs in 1 year 7 months
botdiscordfacebookinstagrampython
amadejkastelic/dart-otp
Feb 2019 - Mar 2023
RFC6238 Time-Based One-Time Password / Google Authenticator Library
Contributions:7 pushes, 1 branch in 4 years 1 month
one-time-passwordauthenticatorrfc6238authenticationpassword-manager
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