HackerOne — Q1/2026
#2 VDP Security Researcher Germany
HackerOne leaderboardBuilding and securing production systems from bare metal to autonomous AI agents. For technical decision makers in the Nuremberg Metropolitan Region.
#2 VDP Security Researcher Germany
HackerOne leaderboardLead/Sole Engineer. Rebuilt and operated the FreeBSD platform end to end in Go, before its sale to eBay.
Technical referenceFocused engagements with clear deliverables. Every sprint starts with an NDA and ends with a written report.
Claude, Claude Code, agent workflows, evals, governance, and security controls for teams that want production value instead of another AI pilot.
Architecture review, load-test analysis, and a prioritized roadmap for your next 10x growth milestone. Deliverable: Written assessment with cost-impact matrix.
Cluster security audit, GitOps pipeline, observability stack, and runbook creation. Deliverable: Hardened cluster config + incident response playbook.
From prototype to production: prompt engineering, RAG pipelines, cost optimization, and monitoring. Deliverable: Production-grade AI pipeline with guardrails.
OWASP Top 10 for LLMs audit, prompt injection testing, data exfiltration analysis, and output validation. Deliverable: Threat model + remediation plan.
Ranked #2 on the German HackerOne Vulnerability Disclosure Program leaderboard.
Learn moreDeveloping and applying AI-assisted techniques for vulnerability discovery at scale across web, mobile, and API targets.
Practical security framework based on OWASP Top 10 for LLMs, covering prompt injection, data poisoning, and model denial of service.
Active contributor to security tooling and responsible disclosure. GitHub profile (@fbettag) linked in header.
30-minute video call to understand your architecture, pain points, and goals. Free, no commitment.
Focused 1-4 week engagement. I embed with your team, review code and infra, and execute hands-on improvements.
Written report with findings, architecture diagrams, runbooks, and a prioritized action plan you own.
Optional retainer for continued advisory, incident response, and quarterly architecture reviews.
Franz is a rare gem in the industry—someone you hope to find but seldom do. He is exceptionally reliable, efficient, and thoughtful. His communication skills surpass those of any other developer I've encountered. Franz genuinely cares about his craft and the quality of work he delivers. Both developers and clients are consistently amazed by his ability to produce high-quality work at an impressive speed, often referring to him as a "machine."
Since we started working with Bettag Systems in 2018, we're always happy for the continued insights and improvements they are providing to our IT infrastructure and projects.
Out of the box thinking and a out of the norm approach to IT is what we love about Bettag Systems. They are always there when we need them, and they are always providing us with the best solutions.
We are getting Consulting from Bettag Systems for over a year now, and we are very satisfied with the improvements our IT is making. It's not cheap, but it's worth it.