Languages: C, C++, C#, Java, Javascript, Python, CSS3, HTML5, Assembly, T-SQL

Libraries and frameworks: .NET, QT5, QT6, JQuery, Standard library for C/C++, CUDA, Numpy, Cupy, Bootstrap 4, Android SDK, Android NDK, IOS

Hardware: Arduino, Raspberry Pi, Nvidia Jetson, PC, STM microcontrollers

OS: Windows 10, Windows Server, Android, IOS, Mac OS X, Linux

Software development: Winform, Webform, ASP.NET MVC, Embedded, Web API, Web pages, SQL database design

Databases: Microsoft SQL server, MySQL server, Postgres

Math: all kind of Math except Topology.

Physics: many kind of Physics.