About
Radek Kargul
Software Engineer · Fitness Coach · International Speaker
Bio
I am a software engineer based in the Netherlands, working at the intersection of AI and developer tooling. My focus is on building software that makes engineers more effective — faster feedback loops, better abstractions, tools that reduce cognitive load without sacrificing control.
Outside of software, I am a certified group fitness instructor. I teach HIIT, strength and conditioning, and mobility classes in Delft, Rotterdam and The Hague. My coaching philosophy is simple: consistency beats intensity, movement quality matters more than load, and the best program is the one you will still be doing in six months.
I also speak internationally at conferences and events on AI and software, and fitness. I believe the same principles that make athletes sustainable apply directly to how we build software teams.
Current focus
AI engineering
Building LLM-powered systems and tooling for software teams.
Talks
Voxxed Days Luxembourg — Introduction to ML Development for Software Engineers
Invited speaker.
Devoxx Poland — Building Secure AI Agents with Quarkus LangChain4j
Devoxx Poland — Debugging Your Health: Fitness for Desk Warriors
Voxxed Days Zurich — Debugging Your Health: Fitness for Desk Warriors
Devoxx Belgium — Building Secure AI Agents with Quarkus LangChain4j
JNation Coimbra — Introduction to ML Development for Software Engineers
LunaConf Rotterdam — Debugging Your Health: Fitness for Desk Warriors
LunaConf Rotterdam — Introduction to ML Development for Software Engineers
Personal
Based in
Netherlands
Tech
JVM, AI
Fitness
Strength training, HYROX, Cycling, HIIT