Hi, I amJonas👋

Building and running the microservice landscape behind m3connect's connectivity platform, with Java and Spring Boot at its core.

• Implement and extend services across a distributed Spring Boot architecture.
• Own maintenance, debugging and support for those services once they are in production.
• Work close to the infrastructure layer — containerised deployments and service-to-service communication.

Delivered scalable web applications end to end — including an in-house 5G core and the web UI that operates it.

• Built an in-house 5G core and a custom web UI to configure and control it.
• Developed React and Next.js frontends against Node.js services.
• Moved between frontend and backend depending on where the product needed the work.

Kept large network and system environments running — the operational grounding that still shapes how I build backends today.

• Maintained and supported large-scale networks and systems in daily operation.
• Handled troubleshooting across the stack, from physical connectivity up to the services on top.
• Developed the instinct for availability and failure modes that I now design for from the start.

Studying computer science alongside working full time, with a focus on how systems are designed rather than only how they are coded.

• Focus areas: Software Engineering, System Design and Network Technologies.

Secondary school diploma with advanced courses in the subjects that pointed me towards software.

• Advanced courses: Mathematics, Computer Science and English.