Open to new experience & opportunities

Dmytro Petrenko

IT Department Manager & System Administrator

๐Ÿ“ Israel
๐Ÿข Hatacot Group LTD / Ravitz CIS
๐Ÿ‘ฅ 500+ Users Supported
โš™๏ธ 6+ Years in IT
dmytro@infra ~ %
$ whoami
โ†’ IT Infrastructure Engineer | Sysadmin | Vibe Coder

$ neofetch --skills
OS: Linux / Windows Server
Virt: Proxmox / Unraid / VMware ESXi
Backup: Veeam / NAS / QNAP
Net: VPN / DNS / VoIP / GoIP
Dev: Python / Telegram Bots / AI Integration
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01

About Me

I'm an IT Department Manager with 6+ years of hands-on infrastructure experience, currently overseeing IT operations across two companies simultaneously and supporting 500+ end users. Based in Israel, I have a proven track record of reducing operational costs through virtualization migrations, AI-driven automation, and building reliable multi-site infrastructure from the ground up.

I specialize in end-to-end IT management: deploying intelligent helpdesk systems, performing physical-to-virtual migrations, architecting VPN networks, and automating workflows with Python and Telegram bots. I thrive on solving complex infrastructure challenges and delivering measurable results.
6+
Years in IT
500+
Users Supported
2
Companies Managed
4
Languages
๐Ÿ‡บ๐Ÿ‡ฆ
Ukrainian
Native
๐Ÿ‡ท๐Ÿ‡บ
Russian
Native
๐Ÿ‡ฎ๐Ÿ‡ฑ
Hebrew
Fluent
๐Ÿ‡ฌ๐Ÿ‡ง
English
Intermediate
02

Experience

2025 โ€” PRESENT
IT Department Manager
Hatacot Group LTD ยท Israel
Managing end-to-end IT operations for 250+ users, leading a team of 2 IT specialists. Deployed an AI-powered multilingual ticketing system, reducing average ticket resolution time by ~40% and eliminating language barriers for Hebrew/Russian/English-speaking staff. Designed and implemented multi-location surveillance infrastructure across company sites. Established standardized IT onboarding and offboarding processes, cutting new employee setup time from 2 days to under 4 hours.
IT ManagementTeam LeadAI TicketingSurveillanceOnboarding
2023 โ€” PRESENT
System Administrator (Concurrent Role)
Ravitz Computer Information Systems ยท Israel
Administering 10+ physical and virtual servers and 200+ workstations across multiple client sites. Executing P2V migrations to Proxmox VE, reducing hardware costs by ~30% and improving disaster recovery. Building and maintaining multi-site VPN infrastructure connecting 3+ office locations with 99.5%+ uptime. Configuring Veeam Backup solutions with automated verification, ensuring zero data loss. Developing mobile-responsive web portals for service requests, reducing phone-based support tickets by ~25%.
ProxmoxVeeamWindows ServerZnunyVPNDNSVoIP
2019 โ€” 2022
System Administrator
DOM Store ยท Odessa, Ukraine
Managed in-store IT infrastructure including POS systems, networking, and end-user support. Automated routine maintenance tasks using scripting, freeing ~10 hours per week of manual work. Built Telegram bot solutions for internal communication and task automation.
WindowsNetworkingPOS SystemsAutomationTelegram Bots
03

Skills & Technologies

๐Ÿ–ฅ๏ธ
Virtualization & Servers
Proxmox VE, VMware ESXi, Unraid, Windows Server (AD, GPO, DHCP, DNS). ZFS RAIDZ2, LVM-Thin, VirtIO optimization.
๐Ÿ’พ
Backup & DR
Veeam Backup & Replication, NAS administration, QNAP, iSCSI, RAID configurations, disaster recovery planning.
๐ŸŒ
Networking
Multi-site VPN (IPsec, WireGuard), firewall configuration, VLAN segmentation, VoIP/GoIP, DNS management.
๐ŸŽซ
Monitoring & ITSM
Znuny/OTRS ticketing, infrastructure monitoring, SLA management, multilingual support, workflow automation.
๐Ÿง
Linux
Server administration, shell scripting, web hosting (Nginx, Apache), service management, server hardening.
๐Ÿค–
Automation & Development
Telegram bot development, Python scripting, AI integration for IT workflows, mobile-responsive web portals.
04

Notable Projects

Infrastructure
AI-Powered Ticket System
Built an intelligent ticket processing system for Znuny with multilingual support (Hebrew, Russian, English) for seamless client communication.
ZnunyPerlAI/NLPMultilingual
Migration
Server P2V Migration & Recovery
Performed physical-to-virtual server migrations, including transferring Windows Server systems to Unraid and Proxmox environments. Experienced in server restoration and recovery from Veeam backups.
UnraidProxmoxWindows ServerVeeam
Networking
Multi-Site VPN Network
Designed and deployed VPN infrastructure using WireGuard and OpenVPN for cross-platform connectivity across multiple locations via VPS servers.
WireGuardOpenVPNVPSLinux
Automation
Telegram Bots
Created various Telegram bots for automation tasks, notifications, and service management, integrating with existing infrastructure.
Telegram APIPythonAutomation
05

Get In Touch

Interested in working together or have a project in mind? I'm open to new experience and opportunities โ€” let's connect.