Senior Network Administrator

Summary

Senior Network Administrator – Arlington, VA. Responsible for design, implementation, maintenance, and support of the organization's enterprise network infrastructure. Ensures stability, integrity, and efficient operation of network systems that support core functions.

• Design and implement scalable, secure enterprise network solutions.
• Manage advanced routing protocols (EIGRP, BGP, OSPF) and ensure optimal network traffic flow.
• Build and maintain cloud‑integrated networks (AWS, Azure, GCP); support hybrid deployments.
• Deploy and administer SD‑WAN solutions to improve flexibility and connectivity across distributed environments.
• Apply DISA STIGs and DoD security guidelines to protect network infrastructure.
• Use monitoring tools like Solar Winds and SD‑WAN controllers to track performance and resolve bottlenecks.
• Create and maintain detailed network diagrams, configurations, and technical documentation.
• Provide Tier 3‑level technical support for complex networking issues.
• Guide junior engineers and support team capability development.
• Evaluate new technologies and manage vendor relationships for hardware/software acquisitions.
• Occasional CONUS/OCONUS travel may be required for project support.
• Other duties as assigned.

• Bachelor’s degree in Computer Science, IT, or related field OR
• Associate’s degree with 5+ years of experience + CCNA.
• 5+ years of enterprise network engineering experience.
• DoD IAT Level II (e.g., Security+ CE).
• Must have a Top‑Secret Clearance.

• Deep understanding of TCP/IP, BGP, OSPF, EIGRP, MPLS, VLANs, and VPN technologies.
• Knowledge of firewall policies, intrusion detection/prevention systems (IDS/IPS), access control, and endpoint protection.
• Expertise with Cisco, Palo Alto, Arista, and other enterprise‑grade networking equipment.
• Experience with tools like Solar Winds, Wireshark, or similar platforms.
• Advanced analytical skills to quickly identify and resolve complex network issues.
• Experience leading network upgrade or migration projects, including planning, documentation, and execution.
• Strong technical writing skills to create and maintain accurate network diagrams, procedures, and incident reports.
• Able to remain calm and effective during critical outages or security incidents.
• Ability to evaluate current infrastructure and recommend improvements aligned with organizational goals.