Network Administrator

About This Role

Administering and sustaining the enterprise network infrastructure is the core of this role, encompassing operations, security, and overall sustainment within an integrated IT environment. It requires strong expertise in routing, switching, wireless, and network security, along with working knowledge of cloud, ICAM, and system integration.

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

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 have:

• Relevant certifications (Cisco CCNA/CCNP or similar)

Benefits

• Comprehensive health, dental, and vision insurance
• Paid life insurance
• Paid time off
• 11 paid holidays
• Performance bonuses
• Tuition reimbursement
• Unlimited training
• Opportunity to thrive in a collaborative, flexible, and innovative environment

About the Company

Concept Plus is a mission-focused technology solutions provider that transforms IT concepts into impactful solutions for federal agencies. Headquartered in Fairfax, VA, the company delivers innovative solutions across Defense, Intelligence, Civilian, Health IT, and Tribal sectors, and is recognized as an award-winning Oracle partner.