Jörn Hirschfeld

Software Developer

I am a developer from Germany, who currently focus on the Kubernetes ecosystem and designing reliable infrastructure. While I am currently learning Rust, which I find quite interesting, my deepest expertise lies in Java/Kotlin. In my free time, I also enjoy working with electronics.

Technologies I Work with Almost Daily

Linux

Java

Kotlin

Kubernetes

Git

Docker

Gradle

Keycloak

Technologies I Work with or find interesting

Rust

Python

C

Go

Redis

Kafka

Cilium

Helm

FluxCD

PostgreSQL

Quarkus

TypeScript

JavaScript

CSS

React

My Projects

Maintaining a k8s cluster

In my free time, I maintain a semi-production bare-metal dual-stack Kubernetes cluster to learn its intricacies. I currently deploy some applications and game servers for friends.

Kubeadm

Cilium

Flux

Longhorn

Helm

Ansible

Cloudflare

wireguard

iPXE

Debian

Tetris

At 15 years old, I built a simple Tetris clone. Don’t spend too much time on there! :)

JavaScript

CSS

HTML

My Career Path

Software Engineer2025

Maybe your company?

Working with ever-chanigng interesting technologies to create impactful applications.

Backend Developer2023

VIER GmbH

Worked on CVG, a product that helps customer build voice (phone-based) bots. It runs in a k8s cluster and is written in Kotlin.

Ausbildung zum Anwendungsentwickler2020

VIER GmbH

Worked on some smaller projects in C++, Python and PHP. Around this time I fully switched to Linux on all my machines.