C# and Dotnet 2.1, the CTO and another senior dev have years of pro experience with it. I am learning the repository method and such, pretty neat stuff. It compiles to native (which I want to play around with in a lambda setting). The stack is dotnetcore 2.1, c#, k8s, etc., on AWS. Pretty boring stack I guess.
I like C#. I spent a year-ish writing a lot of it and it felt like we produced easy to understand and maintain code. I think the MS/Linux divide is probably the biggest reason more people don’t use it.