Network Administrator - TS/SCI w CI Poly

Modern Government Solutions•McLean, VA
•$120,000 - $180,000•Onsite

About The Position

Modern Government Solutions (MGS) is seeking a Network Administrator to join a team of network, platform, and software engineers building and operating next-generation data center networks for artificial intelligence (AI) and high-performance computing (HPC) workloads. The role offers hands-on experience with industry-leading technologies and the opportunity to develop expertise in large-scale, mission-critical networking environments. It is suited to someone with a foundation in IT systems, infrastructure, technical support, or networking who is curious, proactive, accountable, collaborative, and comfortable learning unfamiliar technologies. Mentorship, training, and professional development support growth toward subject-matter expertise in modern data center networking. The position is full-time and onsite in McLean, Virginia, with up to 20% domestic and international travel for deployments, installations, maintenance, and operational support. An active DoD TS/SCI clearance with CI Polygraph and a current IAM Level II certification are required. Applicants selected must be U.S. citizens and may be subject to a government security investigation for access to classified information.

Requirements

  • Active DoD TS/SCI security clearance with CI Polygraph.
  • Current Information Assurance Management (IAM) Level II certification to satisfy DoD 8570 Information Assurance Technical (IAT) requirements.
  • Strong troubleshooting, analytical, and problem-solving skills.
  • Excellent communication and collaboration skills, with ownership, accountability, and follow-through.
  • Self-motivation and effectiveness in fast-paced, continuously evolving technology environments.
  • Enthusiasm for continuously learning new technical skills.
  • Ability to travel up to 20%, domestically and internationally.
  • U.S. citizenship; selected applicants may be subject to a government security investigation for access to classified information.

Nice To Haves

  • Familiarity with networking fundamentals, including TCP/IP, routing, switching, VLANs, SNMP, and basic network troubleshooting.
  • Experience with monitoring, telemetry, observability, alerting, or performance management tools.
  • Exposure to Linux systems or Linux-based Network Operating Systems (NOS).

Responsibilities

  • Document, monitor, maintain, and troubleshoot high-performance data center network infrastructure.
  • Build expertise through hands-on experience, self-directed learning, mentorship, and training in BGP, ECMP, VXLAN, Spine-Leaf architectures, MCLAG, and RoCEv2.
  • Identify performance trends, capacity constraints, and emerging issues before they affect services or customers.
  • Investigate incidents, perform root cause analysis, and drive issues to resolution.
  • Partner with experienced engineers to deploy, optimize, and scale network infrastructure supporting AI and other demanding workloads.
  • Participate in network upgrades, implementations, testing, and operational improvement initiatives.
  • Travel as needed to support deployments, installations, maintenance, and operational support.
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