Sr. Network Engineer

About Concept Plus

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. For more information, visit

About The Role

Concept Plus is seeking a Sr. Network Engineer to manage, coordinate, and perform many aspects of network analysis of needs and services and participate in operations and administration of LAN/WAN infrastructure. The individual will participate in designing solutions, planning, and executing new implementations, working out new product integration and recommending LAN/WAN improvements. They will develop and deploy plans and designs of network systems that will meet an organization's requirements for performance, security, and compliance with relevant standards and regulations.

The role requires hands‑on experience supporting Cisco ISE and Firepower appliances, routing and switching, and strong Oracle and/or Google Cloud environment experience. This role requires an on‑site presence in Silver Spring, Maryland at least three days per week.

What You’ll Do

• Proactively identify, diagnose, troubleshoot issues, and develop solutions to implement on customer networks.
• Manage and solve Tier 1 through Tier 3 issues.
• Resolve assigned trouble tickets.
• Provide cloud networking and support (GCP and OCI environments).
• Maintain direct and frequent experience with ISE/DNAC.
• Configure and troubleshoot IPv6 security.

Qualifications

• US Citizen with active public trust clearance (or qualified to receive one).
• 6+ years of experience in the design of hybrid enterprise networks.
• Experience with any of the following cloud technologies: OCI, GCP, AWS.
• Good understanding and practical experience with routing protocols (EIGRP, OSPF, BGP).
• Good understanding and practical experience with switching technologies (Ether Channel, Port Security, 802.1X, MAB).
• Familiarity with network security technologies like ISE, Zero Trust, and firewalls.
• Proficient with IP routing protocols (OSPFv3, OSPFv2, BGP), QoS, multicast, MPLS.
• Proficient in VPN technologies – Remote Access and Site‑to‑Site VPNs.
• CCIE in Routing and Switching, and/or CCNP with deep expertise in Cisco ISE deployments within enterprise environments required.
• Experience configuring and troubleshooting IPv6 security.

Concept Plus is an affirmative action/equal opportunity employer and will give your application full consideration without regard to 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.

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Information Technology

Industries

IT Services and IT Consulting