Custom Software Development
Full-stack .NET software engineering — from SaaS MVPs and API platforms to complex backend systems and legacy modernization.
Senior engineering for serious software.
Not every project needs AI. Some need a well-architected backend, a clean API, a reliable deployment pipeline, or a legacy system that finally works properly. That's what we've been doing for 25 years.
What we build
- SaaS MVPs — get from idea to working product fast, with architecture that won't need a rewrite when you scale
- REST API platforms — clean, documented, testable APIs that your frontend, mobile app, or partners can integrate with
- Backend systems — data processing, business logic, integrations, and everything that happens behind the UI
- Legacy modernization — refactor monoliths into microservices, upgrade .NET Framework to .NET 8+, or restructure a codebase that's become unmaintainable
- Plugin and integration development — build plugins for existing platforms (AutoCAD, desktop apps, third-party systems)
- DevOps and CI/CD — Azure Pipelines, GitHub Actions, Docker, automated testing, and deployment infrastructure
Our stack
- Backend: .NET / C# / ASP.NET Core (25+ years production experience)
- Frontend: Blazor, Razor Pages, WPF, WinUI3
- Database: SQL Server, PostgreSQL, CosmosDB, SQLite
- Cloud: Azure (Storage, Functions, Service Bus, Pipelines, AD)
- Architecture: Clean Architecture, Domain-Driven Design, SOLID, TDD
- DevOps: Docker, Azure Pipelines, GitHub Actions, YAML
Track record
We've built production software for:
- Fugro — geotechnical data platform with AutoCAD Civil3D integration (30+ year product)
- Shell — 3D subsurface modeling app refactored to WebAPI
- Rabobank — client rating engine with DSL modeling and claim-based security
- Deltares — research software for water and soil management
- SITA — airport equipment control systems
These aren't portfolio projects — they're production systems serving real users in demanding environments.
How we work
- Discovery — understand your problem, constraints, and what success looks like
- Architecture — design the system with Clean Architecture principles before writing code
- Build — incremental delivery with tests at every layer, regular check-ins
- Deploy — CI/CD pipeline, documentation, and a clean handoff
You get clean, tested, documented code that your team (or your next developer) can maintain and extend.
Pricing
Custom software projects are scoped individually. Typical engagements:
| Type | Range | Timeline |
|---|---|---|
| Small project / MVP | EUR 5,000 - 15,000 | 2-6 weeks |
| Mid-size platform | EUR 15,000 - 50,000 | 2-4 months |
| Complex system / modernization | EUR 50,000+ | 3-6+ months |
We work on fixed-price or time-and-materials depending on the project. Always scoped and agreed before we start.