Network Administrator - TS/SCI w CI Poly

Modern Government Solutions; McLean (VA); On-site; USD 90,000 - 140,000; Full time

Job summary

Modern Government Solutions (MGS) is seeking a Network Administrator to join a team building and operating AI data center networks powering HPC workloads. The role offers mentorship, training, and opportunities to grow as a subject-matter expert in modern data center networking.

The ideal candidate has a foundation in IT systems or networking, strong ownership and collaboration skills, and the drive to learn new technologies in a fast-paced government environment.

Qualifications

• Active DoD TS/SCI with CI Polygraph clearance is required.
• IAM Level II certification to satisfy DoD 8570 IAT requirements.
• Strong troubleshooting, analytical, and problem-solving skills.

Responsibilities

• Document, monitor, maintain, and troubleshoot high-performance data center network infrastructure.
• Build expertise through hands-on experience and mentorship in advanced networking technologies (BGP, ECMP, VXLAN, RoCEv2).
• Identify performance trends and capacity constraints; investigate incidents and drive issues to resolution.

Skills

TS/SCI clearance

IAM Level II

Troubleshooting

Communication

Ownership & accountability

Willingness to travel

Networking foundation

Tools

BGP

ECMP

VXLAN

Spine-Leaf topology

MCLAG

RoCEv2

Linux NOS

Job description

TITLE: Network Administrator, AI Data Center Infrastructure

LOCATION: McLean, VA

CLEARANCE REQUIRED: Active TS/SCI with CI Polygraph

EMPLOYMENT TYPE: Full-time, Onsite

TRAVEL: Up to 20% (Domestic and International)

POSITION SUMMARY

Modern Government Solutions (MGS) is seeking a Network Administrator to join a team of experienced network, platform, and software engineers building and operating next-generation data center networks that power Artificial Intelligence (AI) and high-performance computing (HPC) workloads. This is an opportunity to gain hands-on experience with industry-leading technologies and develop expertise in large-scale, mission-critical networking environments.

Ideal for someone with a foundation in IT systems, infrastructure, technical support, or networking, this role rewards curiosity, initiative, ownership, teamwork, and comfort tackling unfamiliar technologies. You will grow into a subject matter expert in modern data center networking, supported by mentorship, ongoing training, and professional development.

RESPONSIBILITIES (not limited to):

• Assist in documenting, monitoring, maintaining, and troubleshooting high-performance data center network infrastructure
• Progressively build expertise through hands-on experience, self-directed learning, mentorship, and training in advanced networking technologies, including Border Gateway Protocol (BGP), Equal Cost Multipath (ECMP), Virtual Extensible LAN (VXLAN), Spine-Leaf architectures, Multi-Chassis Link Aggregation Group (MCLAG), and RDMA over Converged Ethernet (RoCEv2)
• Help identify performance trends, capacity constraints, and emerging issues before they impact 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

REQUIRED SKILLS AND QUALIFICATIONS

• Must possess an active DoD TS/SCI with CI Polygraph security clearance.
• 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 a strong sense of ownership, accountability, and follow-through
• Self-motivated and effective in fast-paced, continuously evolving technology environments, with enthusiasm to continuously learn new technical skills
• Ability to travel up to 20%, domestic and international, to support deployments, installations, maintenance, and operational support

PREFERRED SKILLS AND QUALIFICATIONS

• Familiarity with networking fundamentals, including TCP/IP, routing, switching, Virtual LANs (VLANs), Simple Network Management Protocol (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)

*Applicants selected will be United States citizens and may be subject to a government security investigation for access to classified information.*

ABOUT US

At MGS, we believe a people-first culture corresponds to organizational success through a commitment to excellence, integrity, inclusion, and an attitude that welcomes challenges meets demands, sustains growth, and drives innovation. We provide expert mission-first technical and programmatic services and solutions for the US intelligence community, the US Department of Defense, and other governmental agencies. We create people-first organizational cultures where employees feel needed in the system, not a system that needs employees. We provide you with long-term career opportunities centrally focused on our core value system: inclusion, integrity, and a commitment to excellence.

MGS is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status, and will not be discriminated against on the basis of disability.