Senior Network Engineer – DoD TS/SCI Eligible

Cornerstone Defense LLC; Fort Meade (MD); On-site; USD 130,000 - 150,000; Full time

Benefits offered by this job

Medical, Dental and Vision Plans

Generous PTO Policy

401(k)

Job summary

Cornerstone Defense LLC at Ft. Meade, MD seeks a Senior Network Administrator to configure, secure, and support network assets including switches, routers, firewalls, load balancers, and related infrastructure.

The role supports network modernization projects and requires Linux/Windows system administration skills to manage network‑connected environments, collaborate with external partners, and apply cybersecurity controls across the environment.

Qualifications

• Bachelor’s degree in a technical discipline with 8+ years of relevant experience.
• At least 3 years of Linux and/or Windows experience.
• DoD 8140 certification supporting Network Operations Specialist (e.g., Security+, CEH).
• CCNA/CCNP or equivalent certification, or ability to obtain within 90 days of start.

Responsibilities

• Configure and manage network assets such as switches, routers, firewalls, load balancers, and related devices.
• Perform routine maintenance, troubleshooting, updates, and security hardening on Cisco, Juniper, and Dell network equipment.
• Create and maintain accurate system documentation, configuration management records, and change management artifacts.
• Conduct checklist‑driven reviews to ensure compliance with cybersecurity controls and mitigation requirements.
• Provide technical insight, timelines, and resource assessments for global network architecture upgrade projects.
• Coordinate troubleshooting efforts with external partners and mission stakeholders.

Skills

Network administration

Linux

Windows

Education

Bachelor’s degree in a technical discipline

Tools

Cisco

Juniper

Dell network gear

Job description

Cornerstone Defense LLC at Ft. Meade, MD seeks a Senior Network Administrator to configure, secure, and support network assets including switches, routers, firewalls, load balancers, and related infrastructure.

The role supports network modernization projects and requires Linux/Windows system administration skills to manage network‑connected environments, collaborate with external partners, and apply cybersecurity controls across the environment.