System & Network Administrator

1375 Chatham Pkwy, Savannah, GA 31405, USA

Posted Tuesday, July 28, 2026 at 4:00 AM

Colonial Group, Inc. is a multigenerational, family-owned parent company overseeing a diverse portfolio of subsidiaries. Through our strategic infrastructure, logistics expertise, and a broad range of products and services, we create significant value for our customers while driving innovation and operational excellence.

Job Summary

Reporting to the Systems and Network Manager, with technical oversight from the Network Architect/Engineer and Systems Architect/Engineer, the Systems and Network Administrator maintains, secures, and supports Colonial Group’s hybrid on-premises and cloud infrastructure. This role serves as the primary escalation point for network, systems, and endpoint issues, and the first point of contact for LAN/WAN, VPN, wireless, and Microsoft 365 (Entra , Intune, Teams, Teams Voice, SharePoint, and One Drive) connectivity and access issues.

The Administrator operates with a security-first mindset — applying Zero Trust principles, multi-factor authentication, and endpoint protection standards (Forti Client, Okta), and partners with the Cyber Security team on incident response and remediation. Core responsibilities include proactive monitoring and patching of network and systems infrastructure, Power Shell-driven automation of routine administrative tasks, disciplined ticket and change management using Halo ITSM, and maintaining accurate, audit-ready technical documentation.

The Administrator is expected to stay current on emerging technologies, including AI-assisted administration tools such as Microsoft 365 Copilot, and to support ongoing modernization and continuous improvement across the network and systems environment.

Duties & Responsibilities

Network & Systems Infrastructure Management:

• Implement, configure, maintain, and troubleshoot Colonial Group's on-premises and cloud network and systems infrastructure, including backups, upgrades, and disaster recovery (DR) support, in accordance with documented change management procedures.

Security Patching & Vulnerability Management:

• Patch, upgrade, and harden network and endpoint infrastructure on a defined cadence.

Identity, Access & Endpoint Management:

• Administer Microsoft Entra , Okta, Intune, and Microsoft 365 (Teams, SharePoint, One Drive, Teams Voice) to enforce least-privilege access, multi-factor authentication (MFA), Conditional Access, and Zero Trust security principles across users and devices.
• Use monitoring platforms (Manage Engine OpManager, iGlass, Forti Analyzer, Forti Manager) to proactively detect, triage, escalate, and resolve network, systems, and security issues.

Automation & Process Improvement:

• Develop and maintain Power Shell scripts and automation workflows to streamline routine administration, auditing, and reporting tasks.
• Maintain disciplined ticket management in Halo ITSM — including timely creation, escalation, and closure — and participate in change management processes for infrastructure updates.

Critical Documentation:

• Develop and maintain clear, accurate, and audit-ready technical documentation for all active network electronics and related application environments, including design documents, build/runbook procedures, and support guidelines.

End-User & Subsidiary Support:

• Provide responsive, professional support to end users and team members across all Colonial Group subsidiaries, serving as a positive representative of the IT department.
• Escalate issues beyond the scope of this role to the appropriate network or systems engineer/architect, with clear context and documentation to support rapid resolution.
• Coordinate circuit procurement, maintenance, and support with third-party carriers and vendors, and assist with contract and service-level tracking.

Security

Collaboration:

• Partner with the Cyber Security team on issues with network or systems impact — including diagnosis, triage, containment, and remediation — and support broader initiatives such as endpoint detection and response and network anomaly monitoring.
• Act as project lead for small to medium initiatives, coordinating peers, vendors, and IT management,…