Administrating Linux servers (Rhel,CentOS).
Working with virtualization (Hyper-V, ESXI, OpenStack, KVM).
Administrating Nagion (icinga 2) and Zabbix monitoring system.
Working with elastic stack (Filebeat, Logstash).
Administrating and supporting web servers (ngixn, php-fmp, php-compose)
Working with OS-level virtualization (Docker, Docker swarm, Kubernetes).
Writing bash and python automatization scripts.
Administrating and configuring corporate file cloud service (Seafile + Collabora Online)
Working with the Atlassian Jira, Grafana systems.
Writing Instructions for a Support Team.
Communication with teams in other county and other branches of the company.
Administrating Windows server 2012\2016, AD\GPO\DNS\DHCP.
Administrating Linux servers.
Administrating VoIP (Asterisk\FreePBX).
Working with Mikrotik\Ubiquiti (capsman v2, openVPN, IPsec, DNS, DHCP, Firewall, Proxy)
Administrating Zabbix monitoring.
Working with Esxi, Hyper-V.
Working with Veam backup system.
Administrating 1с servers, MS SQL server 2008\2012, PostgreSQL.
Writing Instructions for a Support L2 Team.
Working with management system Zendesk, OTRS.
Supporting Windows client operating systems.
Administrating Windows server 2003\2008\2012 Active Directory\GPO\DNS\DHCP.
Working with Mikrotik (VPN\DHCP\WiFi AP\CAPsMAN v2)
Configuring and supporting backup systems (Windows Server Backup, Cron)
Working with Zabbix monitoring.
Administrating VoIP servers (Asterisk\Elastix\FreePBX).
Working with Proxmox\Hyper-V virtualizaion.