Principal Software Engineer · Freelance at Ximga
I ship complete software products in weeks instead of months.
SaaS, web apps, backends, games. 20+ years of hands-on engineering across backend, cloud, and frontend, multiplied by agentic AI development. I own architecture, code review, security, and delivery, and I run what I build.
Selected work
- 01 B.Teil Invest investor portal From the founder's AI-built prototype to a hardened production system for a German investment company. Client · 2026
- 02 BlitzBill Invoicing SaaS. Empty repository to launch-ready in about 2 weeks of full-time work, solo. Own product · 2026
- 03 Spectarium · Mintarium Tech lead of a real-time card-gaming platform, from the live multiplayer backend and the browser game with 3D cards and effects to automated deployment. Employee · 2025–2026
- 04 Youmio Web platform and backend services for real-time interaction with 3D AI agents. Client · 2024–2025
What I do
Product delivery
From idea to operation, working directly with the people who own the product: discovery, architecture, build, CI/CD, deployment, and ongoing operation.
AI-built prototypes to production
Your prototype already carries the domain knowledge. I turn it into a typed, tested, secure system you can keep building on.
Deployment and operations
I deploy and operate what I build, in whatever environment fits the project: AWS, Azure, Kubernetes, VMs, bare-metal servers, or a mix.
Experience
- Ximga · Freelance Software Engineer since 2024
- Spectarium Games · Principal Developer 2025–2026
- Youmio · Lead Full-Stack Developer 2024–2025
- Myr · Senior Backend Architect 2023–2024
- B-Side Games · Senior Backend Architect 2020–2023
- Union Investment · Full-Stack Architect 2020
- Stadtwerke Aachen · Web Game Developer 2020
- Tonk Tonk Games · Senior Backend Developer 2017–2019
Before 2017: backend, full-stack, and game development for InnoGames, Gameforge, Bright Future (Rail Nation), gamefabrik, and others; co-founder and CTO of the indie studio games2be.
Computer Science, University of Siegen. German, English, Russian.
Also founder of
Flowcraft Games
My indie game studio. Founder and Managing Director.