Summary
Ortwin Joniaux is a Senior Software Engineer based in the Brussels metro area with over 20 years of hands-on experience delivering backend systems for government, banking, IoT and logistics. He specializes in Java and platform modernization—migrating legacy stacks to Spring Boot, introducing CI/CD and private cloud (OpenShift) flows—while still preferring roles that combine architecture and coding over pure management. Comfortable as a tech lead, scrum master or community organizer, he has driven mission-critical projects like e-Box document providers and COVID-related backend services and built Java competence centers to raise cross-team quality. Pragmatic and business-focused, he emphasizes testable, modular designs, peer reviews and measurable added value. Eager to expand into Kafka, Quarkus/Micronaut, public cloud and languages such as Rust, Python and TypeScript, he seeks freelance engagements close to central Brussels with minimal intermediaries.
11 years of coding experience
19 years of employment as a software developer
Post Graduate, Computer Linguistics, Post Graduate, Computer Linguistics at KU Leuven
Master in Physics, Nuclear Physics, Master in Physics, Nuclear Physics at Katholieke Universiteit Leuven
Dutch, English, French, German