Currently I'm working for MasterCard Worldwide as a Java EE and Microsoft .NET web developer. It's crazy -- I know! I do most of my Java work with Spring MVC, and most of my .NET work with ASP.NET MVC. I've done a fair amount of work with node.js, Python, and Ruby, too. I'm definitely a polyglot programmer. I prefer a *nix environment over Windows, most of the time, but I can generally work with any system.