I have been working as a developer for like 4+ years. During this time some of the developments were focused in improving the process of the companies (Management of personal, cars, financial information).
Database
--SQL Server
--MySQL
--Postgres
Web
-- ASP.NET MVC (HTML5, JavaScript, Jquery, Bootstrap)
-- Entity FrameWork
-- Web API
-- Wordpress
Windows applications
--C#
Mobile App
-Xamarin
-Flutter