The author of the post is Devin Rader, and it's a tutorial on how to build an app that uses Twilio SMS and VolunteerMatch API to find local volunteer opportunities. The app was built using ASP.NET MVC 5, Visual Studio, Newtonsoft.Json, and Twilio.Mvc NuGet packages. The app sends a text message with the location of the user, which is then used to search for volunteer opportunities on VolunteerMatch. The VolunteerMatch API requires authentication through WSSE (Web Services Secure Elections), which was implemented in the code. The tutorial provides a step-by-step guide on how to build the app and includes examples and explanations of various concepts.