IT architecture & system design
Designing scalable system and cloud architectures, reviewing existing landscapes, planning migration and modernization strategies.
IT architecture · IT consulting Cologne, DE
Stefan Reuter
Freelance IT consultant and architect based in Cologne, Germany. I help teams design, build and operate systems that hold up over time.
§ 01 / About
I support companies as a freelance IT architect and consultant – independent since 2008, previously seven years as an IT architect at Postbank Systems. From architecture through program management to operations.
Clients value pragmatic decisions, clear communication and solutions that remain maintainable long after the project ends. I work closely with engineering teams, CTOs and business stakeholders — often as a bridge between the two worlds.
- Experience
- Independent since 2008 · IT since 1996
- Industries
- Banking · Insurance · Retail · Media · Telecommunications · Air traffic management
§ 02 / Services
From the first whiteboard sketch to production.
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[02] Program & project management
Leading transformation projects and multi-year IT programs – from roadmap and governance to operational delivery.
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[03] IT consulting
Technical advice for management and engineering teams: technology selection, roadmaps, effort estimation, second opinions.
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[04] Cloud & operations
Building and hardening cloud environments (AWS, Kubernetes), infrastructure-as-code, observability and operational concepts.
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[05] Software engineering
Hands-on development where it matters: prototypes, critical components, refactoring and technical leadership inside your team.
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[06] AI & LLM integration
Assessing and integrating AI and LLM components into existing systems: feasibility, architecture, data protection and production readiness.
§ 03 / Contact
Interested in working together, or just have a quick question? I'd be glad to hear from you.
- GitHub
- github.com/srt