I can help you with back-end works of all kinds: from writing APIs to tweaking and tuning servers, building architecture of high-load, top-performing eCommerce platforms Extensive programming experience using ? C# Can write third-party APIs, work with and fine-tune, rewrite, and enhance the existing ones. Version control systems and software: Git, SVN, Bitbucket; Visual Studio, NuGet, LINQPad, XCode, and Android Studio for Xamarin.Native projects.