Programming: C#, VB.NET, MSSQL, MySQL, PHP, LINQ, Entity Framework, Nette, REST APIs, ASP.NET, VB for applications, WPF, UWP, Windows Forms, Win32
Network management: Windows Server (2008+), Linux (Debian based), Active Directory, IIS, MS Exchange and other e-mail servers, DNS services, DHCP services, VMWare, Lotus Notes, Routing, Firewalls
Other: WordPress, Joomla, MS Office (Word, Excel, Access), Docker, Git