Summary
Toon Ketels is a seasoned technical lead and late-stage technical co-founder with 14 years of engineering experience building backends, microservices, event streaming systems and client-side TypeScript applications across startups and corporates in Silicon Valley, Belgium and remotely. He combines hands-on development—recently leading Scala REST/GraphQL backends and modern React frontends—with engineering management and product collaboration to deliver scalable, maintainable systems. A pragmatic architect and advocate for idiomatic code, testing and developer onboarding, he’s driven migrations from monoliths to microservices and introduced frontend patterns that improved team velocity. Based in Hanoi and currently working independently while leading Streamliner, he brings both startup founder instincts and discipline from large-team delivery. An underappreciated strength is his breadth across Drupal-era CMS work to modern streaming architectures, giving him rare end-to-end perspective from UX to infrastructure.
14 years of coding experience
13 years of employment as a software developer
International Business, International Business at Tecnológico de Monterrey
WebDesign, WebDesign at Mediapunt (Syntra)
gestion commerciale, gestion commerciale at Ichec Brussels Management School
Master in International Business, Management and business communication, Master in International Business, Management and business communication at LUCA School of Arts
Project management in a multi-project organisation aligned with the Prince2 methodology, Project management in a multi-project organisation aligned with the Prince2 methodology at CEVORA