Modular decomposition
Complex problems get broken down so each module can be built, tested, and perfected on its own. Well-designed interfaces reduce the cost of every future change — the system grows without breaking.
See it in practice →Vibe-Coding-Rescue for products with real customers.
Your product was built fast — with Claude Code, Cursor, or other AI tools. Now you have paying customers, or your first funding round is here, and every new feature feels like a risk. I secure the architecture before it breaks: modular structure, test and regression coverage, full source code handover.
Your funding round is approaching. Your product was built with AI tools — fast, bold, functional. The early euphoria has worn off. The first cracks are showing: a feature nobody wants to touch. A release that takes longer than it should.
Now the ground is shaking. Every new feature breaks another. Releases feel like a gamble. No one on the team dares touch certain parts of the code anymore. Young teams know the upside of AI-generated code — the downside, usually not yet.
An architecture that holds. Missing pieces get retrofitted where they're needed: modular structure, automated tests, clear interfaces. No rewrite. Diagnostic first, then a targeted rebuild.
The funding round is secured. Changes become simple again. Every bug surfaces immediately, before it becomes a problem. The system grows with you — from 5 to 5,000 users, without breaking. The team can focus on what matters: new features, happy customers, instead of dreading the next release. The foundation holds. The idea can grow.
Get clarity, no strings attached — a 15-minute call.
Test and regression coverage
The point where fast-built, often AI-generated code starts to rot. Here it stays buildable and extensible — every change is backed by unit and regression tests.
No lock-in
The source code belongs to you. You can keep developing it yourself or with someone else, any time. Trust isn't built through lock-in.
The Diagnostic is the acute intervention. Build and ongoing support make sure it doesn't catch fire again.
Architecture Diagnostic — flat fee from €3,500
A compact starting point. Result: a written architecture and roadmap document. Yours to keep.
More on how it works →Build — value-based
Modular, test-backed implementation, derived from the Diagnostic. On request.
Ongoing support — Retainer
Continued development and regression safety with a monthly allowance — even while you or your team keep building with AI tools.
Track Record
Three decades, three industries, one pattern: architecture and testing discipline decide whether a system breaks under growth or carries it.
ARRI AG — Reliability
Rebuilt parts of an existing inspection system for camera manufacturing — not incrementally extended, but partially reimplemented. Running uninterrupted in production for three years.
Swisscom AG — Scalability
Built extensive test suites and managed an external team of 50 testers. Regression testing on every change, so new bugs don't put customer satisfaction at risk.
Klingelnberg — Flexibility
Ported a manufacturing company's control software from MS-DOS to a modern Windows architecture, significantly extending its functionality and making it flexible to adapt.
- ARRI AG
- Deutsche Telekom AG
- Swisscom AG
- GE Aerospace
I've been building software for more than three decades — long before Claude Code, Cursor, or vibe coding existed. Automated testing, regression safety, and thoughtful architecture were never a trend for me — they were daily craft, in production-critical systems for ARRI AG, Swisscom, and other industrial clients.
Since 2025, I've been applying that same discipline to products built with AI tools: I work with the same agentic coding tools you do, but under human architectural and review control — so speed doesn't turn into instability.
Peter Fenkart
Latest posts
Modular Isn't Modular: When Extensibility Itself Becomes the Architecture
Classic modularization breaks a system apart. A concept from test-equipment engineering shows how modules can be loaded and rewired at runtime — without touching a line of code.
Read →What Is an Architecture Diagnostic? Process, Duration, and Outcome
An Architecture Diagnostic is a structured assessment of your codebase with a weakness analysis and roadmap — here's how it works in practice, typically completed in under 14 days.
Read →When No One Wants to Touch a Feature: Architecture Over Rewrite
Why a single feature can suddenly become impossible to estimate in planning poker — and how modularization and tests make it manageable again.
Read →
FAQ
If your AI-built product has outgrown its structure — book a call.
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