Chris Georgolios

Senior Systems Administrator and Team Lead with over 20 years of experience working with security and performance across cloud, hybrid, and on-premises environments. Lead a team of 5 engineers and serve as the Tier 3 escalation point, overseeing identity and endpoint management across Microsoft Entra ID, Microsoft 365, Google Workspace, Intune, and Jamf. Extensive infrastructure knowledge working with Windows Server, VMware, Azure, enterprise networking, storage, and backup. Strong background working with automation tools such as PowerShell, Python, Terraform, and Ansible which allows me to standardize provisioning, strengthen security baselines, and accelerate incident response and recovery.

• Scripting, automation, and systems integration using PowerShell, Python, Bash
• Experience with Terraform, Ansible, GitHub, and Azure DevOps
• SSO and SaaS integration, and Azure Infrastructure
• Windows, macOS, and MDM using Intune and Jamf, including security and compliance policy enforcement
• Project Lead on infrastructure refreshes, Exchange online and M365 migrations, ITSM implementation using tools such as JIRA
• Network and security experience with Fortinet, SonicWall, Cisco, load balancers, and Wi-Fi deployment
• Monitoring and critical incident response using PRTG, FortiSIEM, FortiEDR, CrowdStrike, ESET/Datto AV, including triage and root cause analysis
• Backup and storage technologies such as Dell/Compellent SANs, HPE MSA, NetApp, Synology, Veeam, QUEST, N-ABLE
• Worked within ISO compliance to maintain secure and well-documented environments

• Lead an IT team of 5 engineers and own Tier 3 escalations across 3 client environments, handle approx. 15–25 escalations/week, and cut recovery/repair time (MTTR) from 6 hours to 2 hours.
• Design and maintain hybrid infrastructure across 9 sites, supporting 200 Windows endpoints, 8 servers, and 50 VMs, and maintain SAN storage to improve stability across client environments.
• Lead the response team for ~2 major incidents/year, including a ransomware event impacting ~250 users across 9 sites. Coordinate internal teams and vendors to contain it, restore core services in 6 days, then harden systems (MFA rollout, EDR coverage, network segmentation).
• Automate provisioning and configuration using PowerShell, Python, and infrastructure-as-code tools (Terraform, Ansible). Standardize onboarding/offboarding and cut build time from 4 hours to 2.5 hours, lowering repeat misconfiguration tickets by 90%.
• Lead cloud adoption initiatives using Azure services (including Microsoft Entra ID and Intune) alongside on-premises systems, including Google Cloud Platform (GCP) environments to meet evolving organizational needs.
• Ensure resilience through backup and disaster recovery solutions (Veeam, SAN replication) and daily automated restore test reviews. Deploy monitoring and SIEM/EDR tooling (PRTG, FortiSIEM) to improve detection and speed up triage.
• Document critical infrastructure processes and create runbooks and SOPs for incident response, recovery, and standard operations to ensure knowledge transfer, compliance, and consistent execution across the team.
• Direct complex infrastructure projects (multi-site data center refreshes and cloud migrations) from planning through deployment; coordinate vendors, third parties, and internal teams to deliver on schedule with minimal downtime.
• Support network operations across 9 sites including firewalls, VPNs, switching, and load balancing. Roll out MFA for remote access to 125 users, improving reliability and reducing remote access/VPN tickets.

• Managed infrastructure and Azure operations for 2 sites and 120 users, handling incident and change management, capacity planning, service delivery, vendor coordination, and Tier 3 escalations.
• Supported on-prem and hybrid environments including VMware, Windows Server and desktop OS, Linux, and macOS. Managed Dell endpoints and servers, plus SonicWall and FortiGate networks.
• Reduced security risk through regular vulnerability reviews and clear remediation reporting. Led infrastructure planning, budgeting, and roadmap delivery.

• Maintained and configured Cisco and Juniper network hardware, firewalls, and VMware vSphere environments. Analyzed attacks using Arbor Peakflow and performed deep-dive network troubleshooting.

• Provided Level 3 enterprise support for VMware vSphere to Fortune 500 clients and delivered technical presentations at VMware conferences across North America.

• VMware Certified Professional 5 (VCP5)
• Cisco Certified Network Associate (200-301)
• Microsoft Azure Administrator Associate (AZ-104)
• FortiGate Certified Professional (FCP)