23.07.2026 aktualisiert
Premiumkunde
100 % verfügbarIndependent Software Consultant specializing in Legacy System Migration and Complex Problem Solving
Hvidovre, Dänemark
Nur Remote
M.Sc. Theoretical Mathematics and PhysicsÜber mich
Senior .NET architect. C#, Azure, Kubernetes, distributed systems. I take on systems that have outgrown their original architecture - deep diagnosis first, then structural change. Mathematical background, published open-source libraries.
Skills
OAuth 2.0AI AgentsClean ArchitectureAzure KubernetesAzure DevOpsJavaScriptAgile MethodologieKünstliche IntelligenzTest AutomationC#Content-MigrationData MigrationPostgreSQLLegacy System Migration WorkbenchSoftware Architecture
My primary stack is C# and .NET — ASP.NET Core, dependency injection patterns, modern .NET architecture. I work across the full backend and into infrastructure: Kubernetes, Bicep, Terraform, Azure serverless. On the frontend I use React and TypeScript where needed, including Three.js for more unusual requirements.
The work I do best sits at the intersection of deep diagnosis and structural change. Legacy migration is a useful label but undersells what it actually involves — the technical translation is usually the easy part. The hard part is reading a system that has accumulated a decade of intent without documentation, understanding what it was supposed to do, and finding the architecture that should have been there from the start. That is where the mathematical background becomes a practical tool rather than a credential.
Secondary languages include Rust, Haskell, Java, Scala, and Lua. These inform how I think about type systems, correctness, and concurrency even when I am writing C#.
Domain experience: financial systems, ERP (Oracle Fusion), legacy .NET platforms, microservices, API design, database design, Infrastructure as Code. Test automation including Playwright and custom reporting infrastructure.
I have worked in environments where the system was critical, the codebase was hostile, and the previous attempts had not worked. That is the context in which I am most useful.
Toptal profile: https://www.toptal.com/developers/resume/morten-larsen
Erfahrung
Berufserfahrung5 - 10 Jahre
Freelancer seit2021
Sprachen
Englishverhandlungssicher
Projekthistorie
Led full migration of legacy .NET 4.8 platform to ASP.NET Core 9/10, delivering architectural refactoring and modern dependency injection patterns within 10 months
Advanced Oracle Fusion ERP and EPM test automation programme, implemented Playwright-based test suite and custom React dashboard for test results visualization
Took ownership of critical financial system, conducted deep structural refactoring, and functioned as subject matter expert bridging technical detail and business requirements