System Administrator
current
Marriott Moscow Imperial Plaza (LLC Arielt) · 5★ hotel, 268 rooms
📅 January 2026 — present
📍 Moscow, Russia
Took over the infrastructure from the previous administrator, conducted a full audit of systems, accounts, and hardware. Ensure uninterrupted operation of all hotel IT systems.
- Administration of domain infrastructure (AD, DNS, DHCP, GPO, Windows Server), support for client PCs and end users
- Support and maintenance of Oracle Opera PMS, Simphony Micros POS, and the CAPS payment processing server
- Deployed and maintain Zabbix 7 + Grafana monitoring: 466 hosts — VMware cluster, servers, network, printers, UPS, POS terminals
- Built a VPN mesh on AmneziaWG (4 sites through a VPS hub)
- Configured the EGAIS (Russian alcohol tracking system) server: connected Zabbix Agent2 to read logs from the transport module
- Deployed a corporate knowledge base (BookStack), a note-taking system (Memos), and a ticketing system (Zammad)
- Built a Hyper-V Golden Image (Ubuntu 22.04 + Docker + Zabbix Agent) for fast provisioning of new VMs
- Administer a VMware vSphere cluster (3× Dell EMC PowerEdge R640, vCenter 7, 61 VMs, 132TB iSCSI SAN)
- Maintain RusGuard access control, video surveillance, VisionLine electronic locks, and an NEC SV9300 PBX
- Conducted a security audit: changed default passwords, deactivated accounts of former employees
Oracle Opera PMS
Simphony Micros
VMware vSphere
vCenter 7
Hyper-V
Zabbix 7
Grafana
AmneziaWG
Docker
Ubuntu
Windows Server
Active Directory
EGAIS
BookStack
Zammad
NEC SV9300
System Administrator
Grocery supermarket chain · retail
📅 December 2020 — November 2025 (5 years)
📍 Belgorod / Moscow, Russia
Supported the IT infrastructure of a distributed retail chain: from opening new stores to ensuring uninterrupted operation of checkouts, servers, and retail equipment.
- Opening and commissioning new stores: deployed network, servers, checkout stations, and retail equipment from scratch
- Administration of Windows and Linux servers, Hyper-V virtualization on Supermicro hardware
- Maintained "SuperMag 4" POS and retail management software and the retail chain's databases
- Serviced retail equipment: Digi, DP, and Toledo scales; ATOL handheld terminals; price checkers; POS terminals; self-checkout kiosks
- Connected and maintained fiscal registrars and OFD fiscal data operators; worked with the "Chestny ZNAK" mandatory product-labeling system
- Implemented and maintained EGAIS (Russian alcohol tracking system: transport module, POS integration, exchange error troubleshooting)
- Worked with the "Mercury" veterinary certification system (Rosselkhoznadzor): workstation setup, digital signatures, certificates
- Configured and supported digital signature infrastructure: CryptoPro CSP, Rutoken hardware tokens, certificate issuance and renewal
- Monitored infrastructure via Zabbix: servers, MikroTik routers, printers, services, Telegram alerting
- Deployed and maintained an IP video surveillance system integrated with Axxon
- Configured store network infrastructure: routing, VLANs, VPN, PoE, network security
- Administered the IT infrastructure of a hotel property in parallel: AD, DNS, DHCP, GPO, POS systems, Yandex 360, Bitrix24
SuperMag 4
Hyper-V
Windows Server
Linux
Zabbix
MikroTik
EGAIS
Chestny ZNAK
Mercury (VetIS)
CryptoPro / Rutoken
Axxon CCTV
OFD / Fiscal Registrars
Active Directory
Bitrix24
SNMP
System Administrator
Cinema chain · entertainment
📅 July 2010 — December 2020 (10 years 6 months)
📍 Belgorod, Russia
First job in IT. Sole system administrator for two cinema locations. Over 10 years, grew from PC assembly to full administration of server and network infrastructure.
- Administration of Windows Server 2008 R2 and 2016: user accounts, network shares, access rights
- Workstation support: assembly, upgrades, diagnostics, installation and updates of Windows XP/7 and business applications
- Maintained the local network and network hardware, including structured cabling installation and termination
- Set up a VPN connection between the two cinema locations
- Deployed and maintained an IP video surveillance system with remote access
- Supported box office and bar operations — maintained specialized POS software
- Maintained "Premiera" (cinema ticketing system) and R-Keeper (restaurant/bar POS system)
- Supported the cinema's website: updates, technical support
- Trained staff on computer use and business applications
Windows Server 2008/2016
R-Keeper
Premiera
VPN
IP Video Surveillance
LAN / Structured Cabling
Windows XP / 7
Helpdesk / L1