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Pieter Leek — Troubleshooter for Complex IT/OT Environments

I help organisations when technical systems, processes and teams get stuck in places where standard solutions no longer work.

On this site I write about IT, OT, architecture, troubleshooting, legacy modernisation and the tension between technology, operations and management.

🇳🇱 Lees in het Nederlands
🇩🇪 Auf Deutsch lesen
🇬🇧 Read in English
🇮🇩 Baca dalam Bahasa Indonesia

Latest Posts

Commissioning & SAT — Where Architecture Meets Reality

On the moment your design hits the factory floor, why it never goes as planned, and why that costs money — rightly so.
Your microservices are a monolith — just distributed across the network

Why synchronous microservices almost always become a distributed monolith, and what you can do about it.
OT Segmentation: what do you do when your PLC doesn't speak TLS

Why OT security doesn't start with trust, but with boundaries.
Adding one thing to a process is never just one thing

Why complexity doesn't sit in the steps themselves, but in the relationships between them — and what you can do about it.
Legacy is stored process knowledge

Why legacy is not just old technology but often contains years of accumulated process knowledge — and why modernization starts with understanding.
The best troubleshooter doesn't look for the fault first

Why good diagnosis starts with boundaries, behavior, and context
Architecture is not about systems, it's about boundaries

Why the tension between security, operations, and development is not a communication problem.
Middleware is not glue. It's a negotiator.

Why middleware in OT/IT environments is much more than technical integration — and why it deserves architectural thinking.

Contact

Interesting project, complex technical challenge or simply a question? Feel free to get in touch.

GitHub /
LinkedIn /
Website /
pieter@qman.io

© 2026 • Pieter Leek

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