Network and Systems Administrator

I’m Dimitriy. I work across networking, Windows systems, Microsoft 365, and identity in a public-sector IT environment.

I turn recurring support work into clearer troubleshooting, reusable documentation, and automation.

Featured work

Deployed project

A Node.js application promoted through staging, owner approval, and slot swaps, with OIDC identities and checks against the prepared release.

Troubleshooting guide

Follow a missing message from Exchange Online message trace into the mailbox, interpret the evidence, and verify that the user can open it.

Includes a worked example and repeatable PowerShell checks.

Microsoft 365: Exchange Online, SharePoint Online, Microsoft Teams
Identity: Microsoft Entra ID, Active Directory, Hybrid Identity, MFA, Conditional Access
Security: Microsoft Defender, Identity Security, Least Privilege, Zero Trust
Compliance & Governance: Microsoft Purview, Data Classification, Retention, Sensitivity Labels
Systems & Endpoint: Windows 10/11, Windows Server, Group Policy, Microsoft Intune, Patch Management
Networking: TCP/IP, DNS, DHCP, Routing, Switching, Firewalls, Wireless
Automation: PowerShell, Power Automate
Cloud: Microsoft Azure; foundational knowledge of AWS and Google Cloud
IT Operations: Troubleshooting, Documentation, SOPs, Process Improvement