Network Administrator

Description

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.

Requirements

At least 5 years of hands-on IT experience, including 2 to 3 years working within a managed services environment.
Demonstrated background supporting firewalls and network infrastructure across multiple client organizations.
Strong knowledge of switching, VLANs, routing, VPN technologies, and wireless networking concepts.
Experience with one or more enterprise firewall platforms such as Fortinet FortiGate, SonicWall, Cisco Meraki, Palo Alto, or WatchGuard.
Hands-on administration experience with Windows Server environments, including Active Directory and Group Policy.
Familiarity with Microsoft 365 and Azure AD administration in business settings.
Working knowledge of PSA or RMM tools such as ConnectWise, Autotask, Kaseya, N-central, or NinjaRMM.
Reliable transportation and the ability to travel for on-site client support when needed.

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