I'm Yonatan Karp-Rudin, a passionate backend engineer and Staff Engineer at Billie GmbH.
Driven by curiosity and a commitment to clean, reliable backend systems, I specialize in building scalable solutions with Kotlin, Spring, and a toolkit of modern backend technologies.
I love open source and believe in sharing knowledge with the community—whether through code, writing, or open-source contributions.
- 🛠 Primary Focus: Kotlin, Spring Boot, OpenAPI, and JVM-based backend systems
- 🌍 Based in Berlin, Germany (originally from Israel)
- 📝 Blogger, speaker, lifelong learner, and automation enthusiast
- 🐈 Cat person | 🎮 Gamer
- xkcd-click-and-drag: Interactive recreation and data exploration of XKCD's legendary "Click and Drag" comic.
- domain-gateway-demo: Explore the gateway pattern for complex backend domains.
- coffee-machine-simulator: Fun simulation of a coffee machine with a backend twist.
- spring-starter: Jumpstart your Spring Boot projects with this template.
- github-actions: Automation and CI/CD templates for JVM projects.
- xkcd-data-hub: Data aggregation and tools for XKCD fans.
- A contributor to OpenAPI Generator
- Always open to PRs, discussions, and collaboration—let’s build better software together!
