Senior Network Architect — TS/SCI w/ CI Poly, Data Center

PGTEK; Chantilly (VA); On-site; USD 175,000 - 230,000; Full time

Job summary

PGTEK is seeking a Senior Network Administrator in McLean/Chantilly, VA to design and maintain cutting-edge data center networks. The role requires TS/SCI with CI Poly, DoD 8570 IAM II, and on-site work with up to 20% travel.

You will lead complex Layer 2/3 architectures, RoCEv2, and Spine-Leaf fabrics while supporting AI workloads. The position offers a strong compensation package in a dynamic, security-focused environment.

Qualifications

• Must design, configure, and manage complex BGP, VXLAN, L2/L3 data center architectures.
• Experience with redundancy protocols (MCLAG/LACP) and spine-leaf fabrics.
• Ability to support RoCEv2 for ultra-high-speed data transfers.
• Strong problem-solving and teamwork skills.

Responsibilities

• Design, configure, troubleshoot, and maintain data center networks.
• Collaborate with cross-functional teams to translate requirements into solutions.
• Troubleshoot complex network issues and drive incidents to resolution.
• Mentor junior engineers and contribute to their growth.
• Participate in installations, upgrades, testing, and improvements.
• Document network designs, configurations, and procedures.
• Stay current with networking trends and best practices.
• Support networking infrastructure for AI workloads.

Skills

BGP/VXLAN data center architectures

MCLAG/LACP redundancy

Spine-Leaf fabrics

RoCEv2 RDMA

Network troubleshooting

Cross-functional collaboration

Network documentation

AI/workload networking support

Education

IAM Level II certification

Tools

Linux NOS

Job description

PGTEK is seeking a Senior Network Administrator in McLean/Chantilly, VA to design and maintain cutting-edge data center networks. The role requires TS/SCI with CI Poly, DoD 8570 IAM II, and on-site work with up to 20% travel.

You will lead complex Layer 2/3 architectures, RoCEv2, and Spine-Leaf fabrics while supporting AI workloads. The position offers a strong compensation package in a dynamic, security-focused environment.