Neyon builds and secures software that can't afford to fail.
Senior .NET and Azure architecture for Dutch companies and government bodies — from API gateways to AI adoption, from design to production.
- 10+ years experience
- Azure Developer Associate
- MCSD: App Builder
Four ways to work together.
.NET & Azure engineering
Design and build of .NET systems and Azure architecture — from API to infrastructure, built for maintainability.
Secure integration & DevSecOps
API gateways, mTLS, certificates and secure interfaces between organisations, with CI/CD and security analysis built in.
AI adoption & Spec-Driven Development
AI-assisted development without losing quality, control or maintainability — including workshops and ways of working.
From idea to production
Full product delivery: mobile, backend, cloud and release, owned by a single accountable party.
Not: visual design, ERP implementations
Products I've built and run myself.
Can one person design, build, and actually operate a product? GoDraughts is the answer: a complete platform, live on the App Store and Google Play, that I design, build and run alone.
GoDraughts
A complete draughts platform for iOS, Android and web: a Flutter app, a .NET backend, realtime multiplayer, and a self-built AI engine with alpha-beta search, an opening book and endgame tablebases.
- 10languages
- 6,626puzzles
- 4,800+automated tests
- Flutter
- .NET 10
- PostgreSQL
- SignalR
- Azure
Launching on TestFlightWatch More
A privacy-first media player for iOS and Android. Two native apps kept behaviourally identical by 114 automated conformance tests.
- Swift 6
- Kotlin
- SwiftUI
LeesSom
Arithmetic, reading and geography for Dutch primary school, built as an actual game instead of a quiz.
- Phaser 4
- TypeScript
- .NET
European vehicle-data exchange for a Dutch government agency
Modernising a European interface architecture for cross-border enforcement: a YARP-based API gateway, mTLS and certificate management, and secure messaging via eDelivery/AS4.
One accountable person, no layers.
I'm Wouter Nijenhuis, a senior .NET engineer with over ten years' experience in business-critical systems — recently at European, public-sector scale. Under the name Neyon I work independently on architecture, integration, security and AI adoption. No account manager, no bench of juniors: you work directly with the person doing the work.
Not for me: visual design, ERP implementations, general project management.
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