AI Security Engineer · Entrepreneur · Security Researcher · Platform Architect
I build and secure production systems from bare metal to autonomous AI agents.
I started with Unix and internet infrastructure in 2001. Ruby and Rails followed in 2006, Objective-C and iPhone development in 2008, and Scala in 2009. I became a Liftweb committer in January 2012.
From 2014 to 2019, i was the Lead/Sole Engineer behind Kleinanzeigen.de. I rebuilt and operated its FreeBSD platform end to end in Go before the platform was sold to eBay.
Since 2020, my work has focused on Elixir/BEAM and AI systems. Since 2023, primarily LLMs, RAG, production agents, and AI Security.
- AI Security Engineering through Bettag Systems
- Founder & Owner of 2342 Holding
- #2 VDP Security Researcher Germany, HackerOne Q1/2026
- Liftweb committer since January 2012
- Elixir/BEAM for long-lived production systems
- Go for CLI tools, Rust for libraries and small servers
- Swift and server-side Swift/Vapor since 2025
AI Security initial consultation: €999, including follow-up and concrete first steps.






