Architecture for systems that cannot fail.
I design and modernise business-critical IT systems in regulated and safety-critical industries.
I have been building software professionally for more than 15 years – as CTO of a SaaS company as well as architect for Austrian Federal Railways (ÖBB), the Austrian Ministries of Finance and of Health, and LKW Walter. I know both sides: building a product from scratch and replacing legacy systems while operations keep running. My decisions are documented; my clients stay independent – including of me.
Ten competences. Each one proven.
For CTOs and architects: what I master in practice – in full detail in the complete profile.
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Safety-Critical Systems
ÖBB · EN 50126/50128/50129
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Legacy & Mainframe
LKW Walter · AS/400 alongside 700+ services
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AI Agents & Software Intelligence
Archilence · impact analysis from 3–4 weeks to 30 minutes
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Enterprise Architecture & Governance
ÖBB · arc42 and ArchiMate as the standard
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Event-Driven Architecture
LKW Walter · Kafka across 700+ services
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Federated Identity
ELGA · SSO between two ministries
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Transactions & Payment
ÖBB ticket shop · around 3 million tickets a month
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0-to-1 & Technical Leadership
tubics · 6 years as CTO
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Cloud-Native & Hybrid
GCP, AWS, Hetzner, on-prem in federal IT
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Full-Stack Engineering
TypeScript, Java, Python, PostgreSQL
Products I build, systems I shape.
Archilence
A digital twin of the enterprise IT landscape: source connectors feed a bitemporal, ArchiMate-compatible knowledge graph; an agent backbone answers, audits and acts on it.
Solution architecture for Austrian Federal Railways
Automating train routing and modernising the workstations of dispatchers – the people who set the routes for every train on the network.
I run my own infrastructure, publish my protocols as open standards and release tools under permissive licences. The open internet gave me my career; I intend to give some of it back.More about me
One conversation is usually enough to tell whether I can help.
No pitch deck, no discovery-call theatre.