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.
- 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.