Programming both new applications and maintenance work Problem isolation and analysis Software quality testing Application and requirement analysis Process improvement and documentation Data backup and security Ms Server 2008/ 2012 and a bit of 2016. Linux operating systems: - Kali Linux, Deepin, Ubuntu (desktop, server, etc.), Zorin, Parrot Security, Bug traq, etc Experience with Oracle Systems: - maintaining of databases Installation, configuration of both and Cyber-roam and Sophos firewalls and endpoint protection. Full stack programming (in web and application development) PHP and MySql development