I'm Dai, I'm currently a software engineer in Seattle doing the rounds on a variety of startups. I'm mostly familiar with the .NET stack.
(Just don't call me a "full-stack" engineer - there's more to software than a "back-end" vs. "front-end" dichotomy: think about embedded and robotics, industrial control, avionics, systems programming with Rust, and so on!)
I like to think I have extensive experience in C# and the .NET Framework, and modest experience in C++. Prior to Microsoft I worked on web-applications and web-services using ASP.NET Web Forms, ASP.NET MVC, and WCF. I also have experience in PHP, Java and other non-Microsoft platforms and technologies for which I'm happy to answer questions about.