.NET backend & REST APIs
Business-focused services, secure data flows, maintainable contracts and production-ready diagnostics.
Fabian Grochla · Fullstack .NET Developer
I build reliable .NET software for systems that have to work.
6+ years of commercial experience across backend services, transactional software, external integrations and applications communicating with physical devices.
Core expertiseAcross software layers.
Across software layers.
Focused on the outcome.
I work best where a technical problem crosses boundaries: backend, data, integrations, user interfaces and real-world hardware.
Device integrations
Vendor SDKs, native libraries, C++ wrappers, serial communication, TCP/IP and event-driven hardware workflows.
External systems
Resilient API integrations with authentication, timeouts, controlled retries, error mapping and observability.
Transactional software
Reliable financial workflows where data consistency and predictable failure handling genuinely matter.
TechnologyTools chosen
Tools chosen
for the problem.
Backend
C# · .NET · ASP.NET Core · Entity Framework Core · Akka.NET · REST · SignalR · gRPC · Railway Oriented Programming (ROP)
Data
SQL Server · PostgreSQL · SQLite · data modelling · migrations · diagnostics
Frontend & desktop
React · TypeScript · WPF · Blazor · HTML · CSS
Integration & operations
Device SDKs · native libraries · Docker · CI/CD · structured logging · health checks
How I work
Engineering beyond implementation.
Understand context
I start with the business goal, the surrounding process and realistic failure modes.
Think production-first
Diagnostics, security, recovery and maintainability are part of the feature.
Communicate clearly
I explain decisions and trade-offs without hiding behind technical jargon.
Own the outcome
Testing, deployment and operational behaviour matter as much as the code itself.
Let's talk about your .NET challenge.
I am not actively looking for a change, but I am open to valuable B2B conversations and technically meaningful projects.