C# .NET Consultant & Software Engineer in Minneapolis
I’m the founder of Parka Software, a boutique consultancy specializing in healthcare and legal tech. I help teams build, fix, and modernize systems using C#, .NET, React, Angular, Umbraco, and React Native.
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An overview of my professional projects and collaborations. From developing custom web applications for the healthcare and legal sectors to building data visualization tools and mobile apps, my work focuses on creating impactful, user-centered solutions.
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A variety of my side projects, both active and retired. These include apps like Today’s Record High, a data visualization tool for record high temperatures, and MPLS Coffee, a mobile app designed to help users discover quality coffee shops.
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How To Fix Missing 'sub' Claim an ASP.NET JWT
If you're using Azure AD B2C and can't find the 'sub' claim in your Web API, ASP.NET Core's default claim mapping is likely the culprit. Here's how to work with JWT claims directly.
June 12, 2025Adding IndieAuth and IndieWeb Features to My ASP.NET Core Website
How I made clintmcmahon.com IndieWeb-friendly with IndieAuth, microformats, and the IndieWeb Webring.
June 06, 2025