Johan Nilsson - Owner at Tuendi Capital

Johan Nilsson

Owner at Tuendi Capital

Newport, Wales, United Kingdom

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Summary

👤

Senior

🎓

Top School

Johan Nilsson is a pragmatic software craftsman and entrepreneur based in Newport, Wales, with 15 years of hands-on engineering experience and over 20 years engaged in software practice. He runs multiple ventures including Tuendi Capital, Nilsson Property Group and Softy Ltd, blending technical delivery with business ownership. A Master’s-trained security engineer, he brings a strong focus on reliable, testable backend systems and has contributed to the well-known FakeItEasy .NET mocking library by improving async mocking, adding Task<T> support and strengthening test coverage. Johan combines deep technical problem-solving with practical product instincts, often tackling tricky asynchronous behavior that surfaces only at scale. His profile reflects an uncommon mix of open-source impact, security background and ongoing entrepreneurial leadership.

14 years of coding experience

Bachelor, Security Engineering, Bachelor, Security Engineering at Blekinge Tekniska Högskola

Master, Security Engineering, Master, Security Engineering at Blekinge Institute of Technology

Swedish, English, German

Github Skills (10)

asp-net10

net10

dotnet-new10

dotnet10

csharp10

mocking10

dotnet-core10

async9

asynchronous9

unit-testing9

Programming languages (11)

C#TypeScriptC++OCamlJavaScriptGoLuaObjective-C

Github contributions (5)

FakeItEasy/FakeItEasy

Feb 2014 - May 2014

The easy mocking library for .NET

Role in this project:

Back-end Developer

Contributions:10 commits in 3 months

Contributions summary:Johan focused on enhancing the `FakeItEasy` library by adding features related to mocking asynchronous operations. They implemented and refactored code to support returning mocked values and sequences for `Task<T>` return types, including adding overloads for `ReturnsLazily` and `ReturnsNextFromSequence`. The user also improved test coverage and improved code style through bug fixes and adjustments to existing tests, addressing issues in handling asynchronous operations.

dotnettestingmocksmockingcsharp

Dashue/ProgrammingPatterns

Jan 2014 - May 2014

Contributions:7 commits in 4 months

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