Kamil Ondrák
Senior Kotlin Developer at Deutsche Börse
Prague, Czechia
Summary
👤
Senior🎓
Top SchoolKamil Ondrák is a Senior Kotlin Developer with 11 years of experience building low-latency, high-throughput trading systems that operate 24/7 and power European energy markets. He progressed from Java backend work to a Kotlin-only codebase, designing microservices, Protobuf/WebSocket APIs, and fault-tolerant platforms deployed on GKE with Kafka-driven integrations. At Deutsche Börse he has split monoliths into performant Kotlin services and works closely with market operations to ensure real-world trading scenarios are accurately modeled. Comfortable across the full backend stack — from PostgreSQL and messaging (RabbitMQ/Kafka) to containerized deployments — he prefers regular full-time roles on technically interesting projects rather than B2B offers. Colleagues know him as an engineer who balances pragmatic maintenance of mission-critical systems with a continual appetite for learning and architectural improvement.
11 years of coding experience
14 years of employment as a software developer
Master's degree, Master's degree at Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering
Czech, English, French
Github Skills (59)
jack10
discord10
midi10
youtube-player10
vst9
youtube9
linux9
lv29
android-app9
audio9
music9
highcharts8
gnome8
gnome-shell8
windows8
Programming languages (9)
Github contributions (5)
kejml/nyx-kbot
Feb 2022 - Jul 2026
Contributions:20 pushes, 6 branches in 4 years 5 months
kejml/fyx
Apr 2020 - Apr 2020
📣 🇨🇿 Unofficial Nyx.cz client for iOS (Android coming soon)
Contributions:2 commits, 40 pushes, 59 branches in 1 day
androidios
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