• Administrates network users, user environments, directories, and security for networks• Troubleshootes problems across all aspects of systems infrastructure (desktops, servers, networking components, and applications)• Provides support for business applications and systems like LIGA: ZAKON, 1C, Client-bank, CRM systems, OPAT, Liason, Amadeus, Server Backup programs, different antivirus programs• Supports users day-to-day activities, troubleshoots problems, performs on-call support, provides trainings to employees as needed• Provides assistance in locating telecom vendors, computer and office equipment suppliers• Technical support on employees mobile communication activity