Marcel Roozekrans
Freelance .NET C Developer Consultant at Wigo4it
Heemstede, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolMarcel Roozekrans is a seasoned Freelance .NET C# Developer and consultant with nine years of experience designing, building and maintaining resilient web and backend systems for international clients. He blends deep hands-on expertise across .NET ecosystems (from MVC5 and WebAPI to .NET 7 and Blazor) with cloud-native practices on AWS and Azure, container orchestration, CI/CD and infrastructure-as-code. Marcel has repeatedly led teams and projects—ranging from high-traffic payment platforms to invoicing and enterprise portals—bringing strong SOLID/TDD discipline and pragmatic architecture skills. He is an effective communicator who pairs analytical problem solving with a passion for low-maintenance, stable solutions and operational readiness. As an open-source contributor he strengthened the CSharpFunctionalExtensions library by improving async error-handling paths and expanding test coverage, underscoring his focus on robustness and reliability. Based in Heemstede, Netherlands, he prefers engagements that span architecture through delivery, and enjoys translating complex requirements into maintainable systems.
9 years of coding experience
7 years of employment as a software developer
Minor, Advanced Software Development, Minor, Advanced Software Development at Hogeschool van Amsterdam
Dutch, English, German
Stackoverflow
1reputation
0reached
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0questions
Github Skills (7)
hresult10
functional-programming10
resultset10
csharp10
actionresult10
dotnet-core10
entity4
Programming languages (4)
Github contributions (5)
vkhorikov/CSharpFunctionalExtensions
Nov 2021 - Aug 2022
Functional extensions for C#
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:5 commits, 4 PRs, 11 comments in 10 months
Contributions summary:Marcel primarily contributed to enhancing the C# functional extensions library. Their work involved adding and refactoring asynchronous "Try" methods, focusing on error handling and exception management. The user also significantly updated and expanded the test suite, adding new test cases to cover the new asynchronous features and refactoring existing tests to ensure consistency and thoroughness. These contributions improve the robustness and reliability of the library.
polymorphismdiscriminated-unionsfunctional-programminginheritancef-sharp
MarcelRoozekrans/System.Reflection.Abstractions
Sep 2018 - Jan 2020
Contributions:1 PR, 5 pushes, 1 branch in 1 year 4 months
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