Network & Cloud Infrastructure Engineer - TS​/SCI CI Polygraph

TITLE: Network & Cloud Infrastructure Engineer

LOCATION: McLean, VA

CLEARANCE REQUIRED: Active DoD TS/SCI with CI Polygraph

EMPLOYMENT TYPE: Full-time, On-site

TRAVEL: 25%

Modern Government Solutions (MGS) is seeking a Network & Cloud Infrastructure Engineer to design, deploy, and automate next-generation network infrastructure supporting AI and containerized workloads. This role blends cloud systems engineering, automation, and advanced networking to deliver secure, high-performance environments that integrate traditional hardware (routers, switches, firewalls) with Software-Defined Networking (SDN) technologies and the Open Shift Container Platform (OCP).

You’ll be part of a mission‑driven engineering team ensuring scalability, resilience, and security across complex classified infrastructure.

• Design, deploy, and optimize secure, high-performance network infrastructure across on‑premises and Open Shift environments.
• Automate provisioning, configuration, and operations using tools such as Ansible, Python, and Go, applying Infrastructure‑as‑Code best practices.
• Integrate traditional network hardware (routers, switches, firewalls) with SDN and container‑based networking solutions such as Open vSwitch (OVS), OVN, SONiC, or Cumulus NOS.
• Manage and troubleshoot network connectivity and performance across Linux‑based and containerized systems.
• Support Open Shift/Kubernetes networking, including CNI plugins, Metal
  
  LB, and Service Mesh configuration.
• Implement observability and performance monitoring across the full network stack, leveraging tools such as the Open Shift Network Observability Operator.
• Collaborate with network architects, systems engineers, and operations teams to deliver scalable, compliant, and sustainable infrastructure solutions.
• Maintain detailed technical documentation, standards, and operational procedures to ensure consistency and compliance.
• Contribute to modernization efforts by applying innovative technologies and best practices from Top of Rack to Network Border.

• Must possess an active Department of Defense (DoD) TS/SCI clearance with Counterintelligence polygraph.
• Bachelor’s degree in Computer Science, Engineering, or related field (or equivalent experience).
• 5+ years of experience in network or cloud infrastructure engineering, including design, automation, and operations.
• 3+ years of hands‑on experience with networking protocols and architectures (LAN, WAN, VLANs, routing, firewalls).
• 3+ years of scripting or programming experience using Python or Go for network automation or tooling.
• 2+ years of experience using automation/configuration frameworks such as Ansible and Infrastructure‑as‑Code (IaC).
• Proven ability to deploy and troubleshoot hybrid environments across Linux, virtualization, and container platforms (Open Shift/Kubernetes).
• Working knowledge of SDN technologies (OVS, OVN, SONiC, or Cumulus NOS) and Open Shift networking components (CNI plugins, Metal
  
  LB, Service Mesh).
• Strong troubleshooting, documentation, and collaboration skills across system and network layers.

• Proficiency in Python or Go scripting and configuration management with Ansible.
• Experience implementing Infrastructure‑as‑Code (IaC), CI/CD pipelines, or automated configuration workflows.
• Hands‑on experience with SDN technologies and Open Shift/Kubernetes networking (CNI plugins, Metal
  
  LB, Service Mesh).
• Familiarity with service mesh technologies for authentication, load balancing, and observability.
• Knowledge of DoD network security and compliance standards.
• Ability to apply modern network automation and optimization practices across the full network stack – from Top of Rack to Network Border.

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

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.