Network Administrator

Concept Plus LLC; Springfield (VA); On-site; USD 85,000 - 120,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Life insurance

Paid time off

11 paid holidays

Performance bonuses

Tuition reimbursement

Unlimited training

Collaborative environment

Job summary

Concept Plus LLC in Fairfax, VA seeks a Network Administrator to support enterprise network operations, security, and infrastructure sustainment. The role requires strong routing, switching, wireless, and security expertise, with working knowledge of cloud, ICAM, and system integration.

The position includes on-site duties, on-call support, and a path to ICAM-enabled access control, with DoD IAT Level I (Security+) or higher preferred.

Qualifications

• Bachelor’s degree or equivalent experience.
• 2,

Responsibilities

• Manage and maintain enterprise network infrastructure (routing, switching, wireless, firewall integration).
• 2,

Skills

Enterprise networking

Security

ICAM

VPN

LAN/WAN

Education

Bachelor’s degree or equivalent

Tools

Okta

Azure AD

ServiceNow

Job description

Overview

Concept Plus is a mission-focused technology solutions provider that transforms IT concepts into impactful solutions for federal agencies. Headquartered in Fairfax, VA, we bring the agility, responsiveness, and customer intimacy of a small business combined with the quality and infrastructure of a larger firm.

Recognized as an award-winning Oracle partner, we have delivered innovative solutions across Defense, Intelligence, Civilian, Health IT, and Tribal sectors. Our highly certified experts build systems that drive efficiency, accelerate modernization, and ensure mission outcomes with certainty.

We offer competitive pay, comprehensive health, dental, and vision insurance, paid life insurance, paid time off, 11 paid holidays, performance bonuses, tuition reimbursement, unlimited training, and the opportunity to thrive in a collaborative, flexible, and innovative environment.

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.

What you\'ll do

• 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.

Required Qualifications

• 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)

Preferred Qualifications

• Relevant certifications (Cisco CCNA/CCNP or similar)

Concept Plus is an Equal Opportunity Employer. As such, we will give your application full consideration without regard to your race, color, religion, sex, age, national origin, disability, veteran status, sexual orientation, gender identity, or any other classification protected by federal, state, or local law.