The domain model comes first
Real business rules live in a model that names them, behind an API with clear contracts and validation at the edge. Frameworks and databases plug in around it.
Seen in: Sall Whisky Distillery →
← What I do
~/what-i-do/backend
Backend
Most of a product lives in its backend: the APIs, the data and the services behind them. I build those around the domain, so the business rules are easy to find, the data can be trusted and a slow dependency never takes the product down.
01How I work
Know what the database is doing
An ORM is a tool, not a hiding place. I design the schema, write SQL where it matters and use what Postgres already does, from full-text to vector search, before adding another service.
Seen in: Jobbuddy →
Resilient by default
Slow or unreliable work goes on a queue, with retries and backoff, idempotency and an audit trail, so a flaky dependency never takes the product down.
Seen in: Illux Product AI →
Swappable edges
Providers, databases and AI models sit behind ports and adapters, so changing vendor is a new adapter, not a rewrite.
Seen in: Jobbuddy →
02What I’ve built
Illux Product AI
Generative-AI product enrichment & room visualization for Shopware 6
- PHP 8.1+
- Shopware 6
- Symfony Messenger
- RabbitMQ
Jobbuddy
AI job-application platform - from posting to tailored CV
- Java
- Spring Boot
- Angular
- PostgreSQL
Tech Atlas
A bilingual technical dictionary you can explore as a map
- Astro
- TypeScript
- Supabase
- Cytoscape
Movie Explorer
One React codebase, running on the web and as an LG webOS TV app
- React 19
- TypeScript
- Vite
- Tailwind CSS
MovieWheel
Spin a wheel, settle movie night
- React 19
- TypeScript
- Vite
- TanStack Query
DevInsight
GitHub activity turned into an evidence-based portfolio
- C#
- .NET 10
- ASP.NET Core
- EF Core
Sall Whisky Distillery
One production domain, built twice - JavaFX and Spring Boot + Angular
- Java
- JavaFX
- Spring Boot
- Spring Data JPA
Birdie
Log bird sightings where you stand; see everyone's on a map
- Swift
- SwiftUI
- Swift Concurrency
- Firebase
KAS - Conference Administration
A JavaFX desktop app with real business rules
- Java
- JavaFX
- OOP
- MVC
TimeRegistry
One business core, two frontends - WPF and ASP.NET MVC
- C#
- .NET
- WPF
- MVVM
StableHand
Booking and management for a real riding school
- C#
- ASP.NET MVC
- ADO.NET
- Azure SQL
Yatzyweb
Multiplayer Yahtzee with server-authoritative scoring
- JavaScript
- Node.js
- Express
- Pug
Multiplayer Maze
Real-time multiplayer over raw TCP sockets
- Java
- JavaFX
- TCP sockets
- Multithreading
EmployeeApp
A textbook n-tier .NET solution with three clients
- C#
- ASP.NET MVC
- WPF
- ASP.NET Web API
04Writing
No posts on this yet. Coming soon.