Maintenance, monitoring, configuration, and troubleshooting of Linux / Windows servers and network devices.

Testing and installation of new software releases, system updates, and patches.

User and client support

Writing and updating IT system documentation.

Performing system backups, recovery procedures, and disaster recovery plans.

Operating systems (experience of at least 2 years): Windows Server, Ubuntu, CentOS. (Linux / Windows);

SQL databases: MSSQL, MySQL, Microsoft Access;

Virtualization: Hyper-V, Qemu/KVM, VMware/vSphere, VirtualBox;

Services: Nginx/Apache, Postfix, Windows AD/DC;

Network: TCP/IP, Mikrotik, OS Firewall;

Telephony: FreePBX, 3CX;

Monitoring: Zabbix.