What are the promising subspecialties in C#.net development?

Question

Programming

Good afternoon, dear experts, Alexey from Yekaterinburg writes to you =).
As I understand it, nowadays there is a huge amount of information related to programming.
There is a huge amount of literature devoted to this.
Alas, I understand that being a FullStack developer is not an option for me. I do not want to be Eugene Onegin with his "We all learned little by little, something and somehow ...", I want to do one thing, but masterfully.
In this regard, I decided to ask a question about the narrow specializations of programmers.
This is not a question about which language is better, it's a question of what narrow areas in development currently exist (for example, I learned from a recent book I read that once there were "Printer Programmers" or something like that specialized in printer software).
Please, do not be shy, I would like to see promising narrow directions.
Thanks in advance and health to all!

Answer 1

Enterprise, enterprise web (all ASP.NET), application desktop software, games.

Answer 2

Specializations are now all broad, but tasks at work can be narrow. For example, a desktop application developer may only work on the implementation of encryption or image processing algorithms. In general, everything rests on a specific project.

Answer 3

GIS

Answer 4

Writing bots for exchange trading and betting exchanges.

Answer 5

What difference does it make if they don't take you to MS.
You need to proceed from the fact, who are your customers, where are you going to take them from.
From freelance exchanges? Well, go to them and see a typical order, how it looks and what it costs.
Offline work? Go through the ads, pretend that you are a cool specialist, find out what technologies they use and how much they pay.