Senior Network Administrator - TS/SCI with CI Poly - Chantilly, VA

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

Benefits offered by this job

PPO medical with HSA option

Vision plan

Dental insurance

Life Insurance

Short/Long-Term Disability

Critical Illness insurance

401(k) matching

Pet insurance discount (ASPCA)

Employee Assistance Program

Generous PTO and Holidays

Education Assistance after 12 months

Job summary

PGTEK seeks a Senior Network Administrator to design, configure, and maintain advanced data center networks in a DoD-focused setting. Onsite in McLean, VA, with potential Chantilly relocation by year end. You will collaborate across teams to implement BGP, VXLAN, RoCEv2, and Spine-Leaf fabrics for AI workloads.

Ideal candidates hold TS/SCI with CI Poly, IAM Level II DoD 8570 IAT certification, and enjoy mentoring while traveling up to 20% for on-site support.

Qualifications

• Experience designing and managing complex BGP, VXLAN, L2/3 data center architectures.
• Ability to design and troubleshoot L2/3 topologies with redundancy protocols (MCLAG/LACP).
• Familiarity with Spine-Leaf fabrics and RoCEv2 for high-speed transfers.
• Willingness to travel up to 20% domestically and internationally.
• Active TS/SCI clearance with CI Polygraph and IAM Level II DoD 8570 IAT certification.

Responsibilities

• Design, configure, troubleshoot, and maintain data center networks (L2/3).
• Collaborate with cross-functional teams to translate requirements into network solutions.
• Troubleshoot complex issues and drive incidents to resolution.
• Mentor junior engineers and support professional growth.
• Lead installations, upgrades, testing, and operational improvements.
• Document network designs, configurations, and procedures.
• Stay current with networking trends and best practices.
• Support networking for AI workloads and high-performance environments.

Skills

BGP

VXLAN

Layer 2/3 architectures

MCLAG

LACP

Spine-Leaf fabrics

RoCEv2

RDMA over Converged Ethernet

Troubleshooting

Team collaboration

Travel readiness

Clearance: TS/SCI w/ CI Poly

IAM Level II certification

Communication skills

Tools

Linux NOS

Job description

Senior Network Administrator

Location: McLean, VA (with an opportunity to work from the Chantilly, VA location by the end of the year)
Work Arrangement: Onsite, 5 days per week
Travel: Up to 20%
Clearance: Active TS/SCI with Counterintelligence (CI) Polygraph
Certification Requirement: Current IAM Level II certification to satisfy DoD 8570 IAT requirements
Salary: $175,000–$230,000

Key Responsibilities

• Design, configure, troubleshoot, and maintain cutting-edge and complex Layer 2/3 data center architectures using BGP, ECMP, VXLAN, MCLAG, Spine-Leaf topologies, RoCEv2, and related technologies.
• Collaborate with cross-functional teams to understand business requirements and translate them into effective network solutions.
• Troubleshoot complex network issues and help drive incidents through resolution.
• Provide expert technical guidance and support to junior team members, contributing to their professional growth and development.
• Participate in network installations, upgrades, implementations, testing, and operational improvement initiatives.
• Contribute to the documentation of network infrastructure designs, configurations, and operational procedures.
• Stay current on networking trends, technologies, and best practices and proactively expand technical expertise.
• Support the design, implementation, and optimization of networking infrastructure supporting AI and other demanding workloads.
• Travel up to 20% as required to perform on-site installations, maintenance, troubleshooting, and operational support at customer sites or data centers.

Required Qualifications

• Proven experience designing, configuring, and managing complex BGP, VXLAN, and Layer 2/3 data center architectures.
• Expertise in designing and troubleshooting complex Layer 2/3 network topologies.
• Experience with redundancy protocols such as MCLAG (Multi-Chassis Link Aggregation Group) or LACP.
• Experience with Spine-Leaf data center fabrics, including architecture design and implementation.
• Ability and willingness to develop and maintain expertise in RDMA over Converged Ethernet (RoCEv2) supporting ultra-high-speed data transfers.
• Strong problem-solving skills, attention to detail, and commitment to quality work.
• Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.
• Ability to stay current with industry trends and technology advancements.
• Ability and willingness to travel up to 20% domestically and internationally.
• Active TS/SCI clearance with Counterintelligence (CI) Polygraph.
• Current IAM Level II certification to satisfy DoD 8570 IAT requirements.

Preferred Qualifications

• Experience with Linux-based Network Operating Systems (NOS).
• Experience mentoring or providing technical guidance to junior network professionals.

Experience supporting high-performance or AI-focused data center environments.

• Proven experience designing, configuring, and managing complex BGP, VXLAN, and Layer 2/3 data center architectures.

• Expertise in designing and troubleshooting complex Layer 2/3 network topologies.

• Experience with redundancy protocols such as MCLAG (Multi-Chassis Link Aggregation Group) or LACP.
• Experience with Spine-Leaf data center fabrics, including architecture design and implementation.
• Ability and willingness to develop and maintain expertise in RDMA over Converged Ethernet (RoCEv2) supporting ultra-high-speed data transfers.
• Strong problem-solving skills, attention to detail, and commitment to quality work.
• Excellent communication and teamwork skills, with the ability to collaborate effectively with cross-functional teams.
• Ability to stay current with industry trends and technology advancements.
• Ability and willingness to travel up to 20% domestically and internationally.
• Active TS/SCI clearance with Counterintelligence (CI) Polygraph.
• Current IAM Level II certification to satisfy DoD 8570 IAT requirements.

Preferred Qualifications

• Experience with Linux-based Network Operating Systems (NOS).

• Experience mentoring or providing technical guidance to junior network professionals.
• Experience supporting high-performance or AI-focused data center environments.

Our comprehensive benefits package for full-time salaried employees is effective immediately upon the start date.

• comprehensive PPO medical coverage with access to a Health Savings Account (HSA) option, a vision plan, and dental insurance with the base dental plan option paid for by PGTEK.
• Life Insurance, Short and Long-Term disability, and Critical Illness insurance have premiums covered.
• PGTEK offers a matching 401(k) plan and a discount on pet insurance through ASPCA Pet Insurance.
• An Employee Assistance Program is available at no cost to all employees.
• PGTEK offers a generous amount of PTO and Holidays, and an Education Assistance Program is available after 12 months of employment.

ABOUT PGTEK

PGTEK is a true consulting organization dedicated to helping clients achieve their business and technology objectives utilizing our decades of experience and business relationships. PGTEK invests in the educational advancements of our staff by providing the necessary resources to complete Professional and Business Certifications. Our company is our people, and we treat them like family.

EOE, including disability/veterans