Network Administrator

Concept Plus, LLC

50d

About The Position

Concept Plus is seeking a Network Administrator to support enterprise network operations, security, and infrastructure sustainment within an integrated IT environment. The role requires strong expertise in routing, switching, wireless, and network security, with working knowledge of cloud, ICAM, and system integration.

Requirements

US Citizen
Bachelor’s degree or equivalent experience
5–8 years of network administration experience
DoD IAT Level I (Security+) or higher
Strong expertise in enterprise networking and security
Familiarity with cloud networking and ICAM solutions
Experience with ticketing systems (e.g., ServiceNow)

Nice To Haves

Relevant certifications (Cisco CCNA/CCNP or similar)

Responsibilities

Manage and maintain enterprise network infrastructure (routing, switching, wireless, firewall integration).
Perform network configuration, deployment, administration, and lifecycle sustainment.
Administer LAN/WAN connectivity, including VLANs, routing protocols, and segmentation.
Configure and maintain network access controls (ACLs, VPNs, TACACS, RADIUS, 802.1x).
Monitor network performance, capacity, and availability; troubleshoot and resolve issues.
Maintain network monitoring, logging, and alerting systems.
Implement and sustain network security controls in accordance with STIGs, NIST, and Zero Trust requirements.
Support ICAM integration (Okta, Azure AD) to enforce authentication and access policies.
Provide Tier III escalation support for network incidents and outages.
Maintain configuration baselines, documentation, SOPs, and network diagrams.
Support network engineering, upgrades, and infrastructure deployments.
Participate in on-call support to ensure availability and continuity of operations.