Roman Volkov
@romanvolkov
Senior Infrastructure Engineer specializing in Microsoft Exchange and Windows infrastructure, automating operations and scaling to 99.9% uptime.
ZimbabweWhat I'm looking for
I’m a Senior Infrastructure Engineer with 4+ years of fast-tracked progression from IT Support to Senior Infrastructure Engineer at a large retail-technology enterprise. I own Microsoft Exchange end-to-end for 33,000+ mailboxes across a multi-DAG environment, maintaining 99.9% uptime through proactive monitoring, troubleshooting, and structured change control.
I also run enterprise Windows infrastructure—AD DS, GPO, DNS, DHCP, DFS, and WSUS—alongside a hybrid virtualization environment built on VMware vSphere (1,500+ VMs) and 500+ bare-metal servers. On the endpoint side, I operate SCCM/MECM and DPM infrastructure (OSD, PXE, WDS) for 15,000+ endpoints nationwide.
I build PowerShell/Python automation that removes routine engineering toil, including an end-to-end ITSM automation service (Python/FastAPI, webhook-driven, PowerShell, Jira REST API) for provisioning, group management, and mailbox operations—saving 25+ engineering hours/month. I’m currently expanding into Microsoft cloud (Azure, Entra ID, M365) with AZ-104 in progress, and I enjoy taking ownership—from maintaining core platforms to engineering new environments.
Experience
Work history, roles, and key accomplishments
Senior Infrastructure Engineer
DNS Group
Jun 2024 - Present (2 years 1 month)
Owns Microsoft Exchange end-to-end for 33,000+ mailboxes across multi-DAG environments, maintaining 99.9% uptime through monitoring, troubleshooting, and structured change control. Manages VMware vSphere (1,500+ VMs), core Windows infrastructure (AD DS, GPO, DNS, DHCP, DFS, WSUS), and SCCM/MECM plus DPM for 15,000+ endpoints, and built ITSM automation using Python/FastAPI, webhooks, PowerShell, an
System Administrator
DNS Group
Aug 2023 - Jun 2024 (10 months)
Maintained and scaled a 500-VM VMware vSphere (ESXi/vCenter) platform supporting core business systems. Deployed and operated the Microsoft System Center stack (SCCM, SCSM, DPM) with MS SQL Server backend, engineered backup with Veeam Backup & Replication, set up monitoring via Zabbix, and built an international branch office infrastructure from scratch (including Domain Controller, Exchange, and
IT Support Specialist
DNS Group
Feb 2022 - Aug 2023 (1 year 6 months)
Managed an endpoint fleet of 1,500+ machines, performing hardware diagnostics, administering automated OS deployment, and handling lifecycle tracking. Administered Asterisk VoIP (PBX) and performed routine Exchange Admin Center (EAC) tasks, and authored initial PowerShell/Python automation that reduced helpdesk ticket resolution time, leading to a fast-track promotion into the core infrastructure
Education
Degrees, certifications, and relevant coursework
College Diploma
College Diploma, System and Network Administration
Completed a 4-year college diploma in System and Network Administration.
Tech stack
Software and tools used professionally
Availability
Location
ZimbabweAuthorized to work in
Job categories
Skills
Interested in hiring Roman?
You can contact Roman and 90k+ other talented remote workers on Himalayas.
Message RomanGet matched with your dream remote job
Sign up now and join over 250,000+ remote workers who receive personalized job alerts, curated job matches, and more for free!
