Server/Network Administrator

NRI North America; Rockaway (NJ); On-site; USD 80,000 - 100,000; Full time

Job summary

A technology services provider in New Jersey is seeking an experienced Network Administrator to manage and optimize their network infrastructure. The role involves configuring Cisco routers and switches, administering Windows Server, and supporting Microsoft 365 E5 services. Ideal candidates will have over 5 years of experience and strong expertise in networking and system administration. This is a contract-to-hire opportunity.

Qualifications

• 5+ years of experience as a Network Administrator or similar role.
• Strong knowledge of routing, switching, VPN, and security.
• Experience with Microsoft 365 E5 and Azure AD environments.

Responsibilities

• Configure, monitor, and maintain Cisco routers and switches.
• Administer and support Windows Server environments.
• Implement and maintain Microsoft 365 E5 services.

Skills

Cisco networking (CCNA-level or higher)

Windows Server administration

Microsoft 365 E5

Troubleshooting and analytical skills

TCP/IP

Tools

Hyper-V

VMware

Meraki

Job description

Through NRI Resource Management Services (RMS), we offer custom talent solutions to help our clients meet their evolving technology and business needs. We help effectively match the right technology professional to their organization, recruiting for contract, contract-to-hire, and direct roles. Our client in New Jersey has an immediate need for a Network Administrator to join their team. Please note that this is a contract to hire opportunity with our client and NOT with NRI.

Position Summary

The Network Administrator is responsible for managing, maintaining, and optimizing the organization’s network infrastructure and core systems. This role requires strong technical expertise in Microsoft Windows Server environments, Cisco network infrastructure, and Microsoft 365 E5 services. The ideal candidate will ensure network security, availability, and performance across multiple locations while supporting end-user connectivity and collaboration tools.

Key Responsibilities

Network Administration

• Configure, monitor, and maintain Cisco routers, switches, firewalls, and VPNs.
• Manage LAN/WAN connectivity, VLANs, QoS, and network segmentation.
• Implement and maintain network security best practices, including access controls and firewall policies.
• Troubleshoot network outages, latency, and performance issues.
• Maintain detailed network documentation, diagrams, and configurations.

Windows Server & Infrastructure Management

• Administer and support Windows Server environments (2016/2019/2022), including Active Directory, DNS, DHCP, and Group Policy.
• Oversee virtualization platforms such as Hyper‑V or VMware.
• Manage system patching, updates, and backups for servers and critical systems.
• Ensure domain and file system security, user/group management, and access provisioning.

Microsoft 365 E5 Administration

• Administer Microsoft 365 E5 services including Exchange Online, SharePoint, Teams, OneDrive, and Security & Compliance Center.
• Implement and maintain Intune device management and conditional access policies.
• Support Azure AD synchronization and identity management.
• Configure and monitor Microsoft Defender for Endpoint and Defender for Office 365.

Security & Compliance

• Maintain firewall, VPN, and endpoint security policies in compliance with organizational standards.
• Perform regular network and system audits to identify vulnerabilities.
• Participate in disaster recovery planning, testing, and documentation.
• Provide Tier 2–3 technical support for networking and system‑related issues.
• Collaborate with helpdesk and application teams to resolve complex IT incidents.
• Assist in IT project planning and infrastructure upgrades.

Qualifications & Skills

Required

• 5+ years of experience as a Network Administrator, Systems Administrator, or similar role.
• Strong knowledge of Cisco networking (CCNA‑level or higher) routing, switching, VPN, and security.
• Strong knowledge of Meraki Cloud management for switching, routing, and wireless.
• Proficiency in Windows Server administration and Active Directory management.
• Hands‑on experience with Microsoft 365 E5 and Azure AD environments.
• Solid understanding of TCP/IP, DNS, DHCP, VLANs, and VPN technologies.
• Strong troubleshooting and analytical skills.

Preferred

• Cisco CCNP or Microsoft Certified: Azure Administrator / Security certification.
• Experience with Meraki cloud‑managed networks.
• Familiarity with PowerShell scripting and automation.
• Knowledge of backup solutions and disaster recovery strategies.
• Experience supporting hybrid cloud environments.