We are looking for an experienced Network Administrator to support and enhance client infrastructure in Manchester, New Hampshire. This contract position with the potential to become permanent is ideal for a hands-on, detail-oriented individual who excels in network security, systems administration, and client-facing technical collaboration. The role focuses on maintaining reliable connectivity, securing business environments, and delivering practical infrastructure improvements across multi-site organizations.

Responsibilities:

• Oversee the administration, tuning, and ongoing support of firewall environments using leading platforms such as Fortinet, SonicWall, Cisco Meraki, Palo Alto, and WatchGuard.
• Build, maintain, and optimize network infrastructure, including switching, VLAN segmentation, routing, and wireless connectivity for client environments.
• Configure secure site-to-site and remote access VPN solutions to ensure dependable connectivity for distributed users and locations.
• Track network health and security posture, respond to performance concerns, and address risks before they affect business operations.
• Conduct firewall policy assessments, manage rule sets, and participate in security reviews to strengthen protection and compliance.
• Contribute to infrastructure planning for new deployments, expansions, and technology refresh initiatives across client sites.
• Diagnose and resolve advanced network and connectivity problems spanning multiple offices and mixed environments.
• Administer Windows Server platforms and core services such as Active Directory, Group Policy, file services, and print services.
• Support Microsoft 365 and Azure AD environments, including collaboration, device management, and cloud-based user administration.
• Partner with clients and internal sales stakeholders during discovery discussions, assessments, solution planning, and technical presentations.