Willem Jan Glerum
Principal Software Engineer at Lunatech, based in Delft.
Started on the JVM with Scala, Play and Akka, building reactive systems. These days I work on cloud-native applications with Quarkus and modern Java. My talks tend to circle around two themes: concurrency, where the trade-offs between reactive programming and virtual threads are still being worked out, and AI agents, where Quarkus LangChain4j and friends meet the realities of OIDC, guardrails and tool calling.
Off-keyboard you'll find me volunteering at Scouting events or somewhere outdoors.
Find me
Want to invite me to speak, or run a workshop together? Reach out on Bluesky.