My name is Robert. I'm a Software Engineer at itestra GmbH, where I work on large-scale retail software — reverse-engineering legacy AS/400 systems and rebuilding them in modern Java and TypeScript.
I completed my M.Sc. in Computer Science at RWTH Aachen University in 2024, after my B.Sc. at Hochschule Niederrhein.
- 🔭 Currently working on a POS system migration at itestra — AS/400 reverse engineering, Spring Boot, React
- 🌱 Exploring Go, deepening my knowledge of distributed systems and self-hosting
- 🛠️ I maintain a small homelab: Mailcow, Vaultwarden, Authentik, Traefik — all IaC-managed
- 🚩 CTF player — built a CTF Lab Platform as part of my bachelor's thesis
- 💬 Ask me about Java, TypeScript, Python, Spring Boot, or Linux
- 📫 Reach me at robert@hartings.dev or via hartings.dev
- 😄 Pronouns: He/Him
- ⚡ Fun fact: Still no fun fact — go watch some cat videos
Languages & Tools:
Java · TypeScript · Python · Go · C/C++ · Spring Boot · React · Vue.js · FastAPI · Docker · Linux