Маркіян

Markiian Boiko
System & Network Administrator
Lviv, Ukraine · Open to on-site (Lviv) or remote work · [відкрити контакти](див. вище в блоці «контактна інформація») · [відкрити контакти](див. вище в блоці «контактна інформація»)
Professional Summary
System and network administrator with 8+ years of experience in IT and telecom infrastructure across an IT company, the media sector, a state institution and the Armed Forces of Ukraine. Specializes in Windows Server and Linux administration, Active Directory, VMware ESXi and Hyper-V virtualization, MikroTik, FortiGate, pfSense and UniFi networking, Veeam backup, and Zabbix and PRTG monitoring. Focused on stable, secure infrastructure and fast incident resolution.
Core Skills
• Windows and Microsoft: Windows Server, Active Directory, Group Policy, DNS, DHCP, WSUS, Microsoft 365 (Office 365, Azure, SharePoint, Teams), PowerShell, BitLocker, IIS, MS SQL Server
• Networking: TCP/IP, ICMP, VLAN, routing, VPN (WireGuard, OpenVPN), firewalls, network troubleshooting, Cisco IOS, MikroTik, Ubiquiti UniFi, pfSense, FortiGate, TP-Link, D-Link, Zyxel
• Virtualization and backup: VMware ESXi, Hyper-V, Proxmox, Oracle VirtualBox, Veeam Backup & Replication, Azure Backup, Acronis, NAS, RAID
• Linux and services: Ubuntu Server / Linux, macOS, Apache, MySQL
• Device management (MDM): Microsoft Intune, ManageEngine Mobile Device Manager (Android, macOS, Windows)
• Monitoring: Zabbix, PRTG
• Collaboration tools: Jira, Confluence
• Other: Hikvision and Dahua video surveillance, structured cabling
Professional Experience
System Administrator
IT company (name under NDA), Lviv · Aug 2024 – Aug 2026 (2 years)
• Administered the company's server, network and virtual infrastructure, ensuring uninterrupted operation of business-critical services.
• Maintained a hybrid environment of Windows Server and Ubuntu/Linux/macOS, including Active Directory and Entra DC, DNS, DHCP and Group Policy.
• Managed a fleet of Android, macOS and Windows devices with ManageEngine Mobile Device Manager and Microsoft Intune: device enrollment, security and compliance policies, application deployment and remote support.
• Managed VMware ESXi and Proxmox virtualization: deployment, updates and resource planning for virtual machines.
• Configured routing, VLAN segmentation, VPN access (WireGuard/OpenVPN) and firewall rules to separate and protect internal networks.
• Oversaw backup and recovery with Veeam and Azure Backup Service, regularly verifying backup integrity and real service recovery times.
• Monitored infrastructure health, detecting failures before they affected users.
• Provided user support and resolved incidents from workstation to network and server level.
• Administered the Microsoft 365 environment (Office 365, Azure, SharePoint, Teams) and worked with Jira and Confluence.
Technologies: Windows Server, Ubuntu/Linux, macOS, Active Directory, Entra, Group Policy, Intune, ManageEngine MDM, VMware ESXi, Proxmox, Veeam, Azure, Office 365, SharePoint, Teams, WireGuard, OpenVPN, Jira, Confluence
System and Network Administrator
Media Servis, Lviv · Jan 2021 – Aug 2024 (3 years 8 months)
• Supported 50+ units of server and network equipment, responsible for configuration, updates and diagnostics.
• Administered physical and virtual Windows Server machines, including deployment, updates and backups.
• Configured and maintained MikroTik, pfSense, FortiGate, Ubiquiti UniFi, D-Link, TP-Link and Zyxel network equipment.
• Designed and implemented routing, VLAN segmentation and basic network services to separate traffic between departments.
• Deployed and maintained Wi-Fi coverage on UniFi access points, including radio coverage planning and connectivity troubleshooting.
• Set up backup and recovery with Veeam Backup & Replication, with regular recoverability checks.
• Configured infrastructure monitoring in PRTG and Zabbix, which shortened failure detection time and enabled proactive incident response.
Technologies: Windows Server, VMware, MikroTik, pfSense, FortiGate, UniFi, VLAN, routing, Wi-Fi, Veeam Backup & Replication, PRTG, Zabbix
Military Service
Armed Forces of Ukraine (Defense Forces), Lviv · Jun 2019 – Nov 2020 (1 year 6 months)
• Operated and maintained telecommunications equipment, ensuring stable communication and data transmission.
• Monitored equipment status and quickly resolved technical faults under tight time constraints.
• Performed diagnostics, maintenance and restoration of communications equipment.
Technologies: Telecommunications equipment, data transmission channels, diagnostics and repair
Lead Computer Network Engineer
Lviv District Administrative Court, Lviv · Jan 2018 – Mar 2019 (1 year 3 months)
• Administered the local network of a state institution, ensuring stable IT infrastructure for work with restricted-access documents.
• Configured network equipment and supported user workstations across all departments.
• Diagnosed and resolved technical faults, minimizing downtime.
Technologies: LAN, network equipment, Windows, workstation support
System Administrator
DMP Group, Lviv (marketing, advertising, PR) · Nov 2016 – Nov 2017 (1 year)
• Administered Windows Server 2012 and VMware ESXi virtualization at a marketing company with an active call center.
• Configured network equipment and the pfSense firewall for access control and traffic filtering.
• Maintained FreePBX IP telephony and the Vicidial call-center platform, ensuring continuity of outbound campaigns.
Technologies: Windows Server 2012, VMware ESXi, pfSense, FreePBX, Vicidial
Education
• Lviv Polytechnic National University — System Administration of Telecommunication Networks. Higher education, 2023 – 2024
• Lviv Polytechnic National University — Telecommunications. Incomplete higher education, 2014 – 2018
• Lviv College of the State University of Telecommunications — Informatization Tools. Specialized secondary education, 2010 – 2014
Additional Training
• Computer Academy STEP ("ШАГ") — System and Network Administration, 2015 (30 months)
Languages
• Ukrainian — native
• English — intermediate