System & Network Administrator

Colonial-Group-In; Savannah (GA); On-site; USD 75,000 - 110,000; Full time

Job summary

Colonial Group, Inc. in Savannah, GA, is seeking a Systems and Network Administrator to maintain, secure, and support hybrid on-premises and cloud infrastructure.

This role serves as the primary escalation point for network, systems, and endpoint issues, handling LAN/WAN, VPN, and Microsoft 365 connectivity with a security-first mindset. You will patch and automate tasks with PowerShell, manage tickets in Halo ITSM, and collaborate with Cyber Security on incidents while driving IT modernization

Qualifications

• Bachelor's degree in Information Technology, Computer Science, or a related field, or an equivalent combination of education, certifications, and hands-on experience.
• 3-5 years of progressive experience in systems and/or network administration within an enterprise, multi-site environment.
• Experience administering hybrid on-premises and cloud infrastructure.
• Experience administering Microsoft 365 (Entra ID, Intune, Exchange Online, Teams) strongly preferred.

Responsibilities

• Manage, maintain, and troubleshoot Colonial Group's hybrid on-premises and cloud network and systems infrastructure, including backups and disaster recovery.
• Patch, upgrade, and harden network and endpoint infrastructure on a defined cadence.
• Administer Microsoft Entra ID, Okta, Intune, and Microsoft 365 applications to enforce least-privilege access and MFA.
• Develop and maintain PowerShell scripts and automation workflows for routine tasks.
• Maintain disciplined ticket management in Halo ITSM and participate in change management processes.
• Create clear, audit-ready technical documentation for active environments.
• Provide end-user and subsidiary support and coordinate with vendors and carriers.
• Partner with Cyber Security on incidents and remediation; lead small to mid IT projects.

Skills

3-5 years of experience

Troubleshooting

Mentoring

Education

Bachelor's degree in IT/CS or related field

Tools

Microsoft 365 Admin

Entra ID/Intune

Fortinet/CrowdStrike security tech

Job description

1375 Chatham Pkwy, Savannah, GA 31405, USA

Job Description

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 ID, Intune, Teams, Teams Voice, SharePoint, and OneDrive) connectivity and access issues. The Administrator operates with a security-first mindset — applying Zero Trust principles, multi-factor authentication, and endpoint protection standards (FortiClient, 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, PowerShell-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 ID, Okta, Intune, and Microsoft 365 (Teams, SharePoint, OneDrive, 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 (ManageEngine OpManager, iGlass, FortiAnalyzer, FortiManager) to proactively detect, triage, escalate, and resolve network, systems, and security issues.

Automation & Process Improvement:

• Develop and maintain PowerShell 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, and contributing to the organization's ongoing IT modernization roadmap.

Proactive Maintenance & Business Continuity Support:

• Participate in after-hours support during scheduled service windows or due to a production outage to support after-hours incidents and assist with periodic disaster recovery and business continuity testing.

Education and Experience

• Bachelor's degree in Information Technology, Computer Science, or a related field, or an equivalent combination of education, certifications, and hands-on experience.
• 3-5 years of progressive experience in systems and/or network administration within anenterprise, multi-site environment.
• Demonstrated experience administering hybrid on-premises and cloud infrastructure.
• Experience administering Microsoft 365 (Entra ID, Intune, Exchange Online, Teams) strongly preferred.

Knowledge, Skills and Abilities

• Solid working knowledge of Fortinet, CrowdStrike, or comparable enterprise network and security technologies.
• Working knowledge of Microsoft 365 administration, including Entra ID, Intune, Teams,SharePoint, and OneDrive.
• Understanding of Zero Trust security principles, multi-factor authentication, and endpointdetection and response.
• Scripting and automation experience (PowerShell preferred) for routine administrative andauditing tasks.
• CompTIA Network+ and Security+ certifications, or industry equivalent, held or actively pursued.
• Fortinet and/or Microsoft certifications preferred but not required; certification progress expectedwithin the first year of employment.
• Familiarity with ITIL-aligned service management practices, including incident, problem, andchange management.

Strong analytical and troubleshooting skills, with the ability to prioritize and resolve issues under pressure.Strong written and verbal communication skills to interact effectively with end users, team members, and vendors.Ability to work independently and collaboratively, and to mentor junior team members as needed.Willingness to participate in after-hours initiatives and stay current with evolving security and technology standards,including emerging AI-assisted administration tools.

Physical Requirements

• Prolonged periods of sitting and working at a computer.
• Ability to move around an office environment.
• Occasionally lift or carry up to 20 pounds.

Travel: Occasional travel between Colonial Group locations may berequired, up to approximately 20%

Eligibility Requirements: Hiring is contingent upon eligibility to work in the United States.

Colonial Group, Inc. is committed to creating an environment that values and supports diversity and inclusiveness across our organizations. We encourage applications from qualified individuals who will help us achieve this mission. Colonial Group, Inc. prohibits discrimination of and will receive consideration for employment without regard to race, color, religion, sex, age, sexual orientation, gender identity, religion, national origin, disability, veteran status, or other legally protected status.

1375 Chatham Pkwy, Savannah, GA 31405, USA