About me

I’m a freelance software engineer based in the Netherlands with a strong focus on JVM-based development — primarily Java and Kotlin — and a passion for embedded systems and hardware tinkering.

By day I design and build backend systems: APIs, distributed services, event-driven architectures. By night I’m likely soldering something to an Arduino or writing a Kotlin coroutine to control it.

What I work with

Languages

  • Java 21+
  • Kotlin
  • Typescript
  • C / C++ (embedded)
  • SQL
  • Python (tooling & scripting)

Platforms & tools

  • Spring Boot / Spring Framework
  • React
  • Android / iOS (Flutter)
  • Arduino / ESP32
  • Docker & Kubernetes
  • PostgreSQL / MySQL / MS-SQL

Practices

  • Domain-driven design
  • Event sourcing & CQRS
  • Test-driven development
  • CI/CD pipelines
  • Code review & mentoring

Hire me

I’m available for freelance projects. Whether you need a backend API, a Kotlin Multiplatform app, or someone to make sense of your legacy code — let’s talk.

vanderzee.org

Software Engineer & Maker — Java · Kotlin · Embedded Systems


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