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
Full-Stack
Agent PC
Built a Telegram Mini App that turns each workstation's QR asset label into a self-service entry point โ€” scanning a PC surfaces its live health (SMART, disk wear, CPU temperature) and files a support ticket pre-bound to that exact machine in Znuny.
Telegram Mini AppReactFastAPIZnuny RESTPostgreSQLAction1
Analytics
Hanita Sales Analytics
Full-stack BI platform (Electron + FastAPI) that pulls live data from Priority ERP to replace Qlik dashboards. Sales/margin/inventory analytics, multi-currency, trilingual UI (EN/HE/ไธญๆ–‡), role-based auth, PDF/XLSX export. Owned the whole pipeline โ€” Dockerized backend, self-hosted CI cross-builds, auto-update, Cloudflare Tunnel delivery.
ElectronFastAPIPriority ERPDockerCloudflare TunnelCI/CD
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.