I need some advice to choose a language for back-end development. Right now, my REST APIs were created by using Flask/Django, and I'd like to create a more reliable and more efficient API with static typing. On the one hand, Go is young, very light, and syntax like Python's, but C# has a large number of libs and more built-in methods. Which is the best solution today?
I would recommend C#, particularly Simplify.Web web-framework. C# is easy to start with (especially .NET Core). Simplify.Web is also easy to start with, no extra setup required for simple API, but on the other hand you have power of C# and full control over your API with ability to extend.
From times to times I asked or was asked that same question. Technology aside, it's important to consider the skills and expertise that the dev team has. Whether you use language A,B or C or framework X,Y and Z, if your team has a strong background and experience with something make it count too.