Network Security Engineer

Systems Engineering Solutions Corporation
Alexandria, VA
Job Description
The Network Security Engineer is responsible for managing, maintaining, and modernizing the agency’s enterprise network infrastructure, including Cisco-based networking environments, multi-cloud connectivity, perimeter security platforms, and associated monitoring and compliance capabilities.

Requirements

  • Install, configure, and maintain network infrastructure components, including Cisco routers, switches, wireless systems, and firewalls.
  • Administer network management and monitoring platforms, including PathSolutions and Cisco DNA Center.
  • Manage Palo Alto firewall platforms and services, including PAN-OS, VPN, Prisma Access, and GlobalProtect.
  • Perform structured cabling installation and management for copper and fiber infrastructure across sites and colocation facilities.
  • Monitor and optimize network performance across enterprise, MPLS, and cloud-connected environments.
  • Diagnose and resolve network issues, including routing, switching, connectivity, latency, and security-related incidents.
  • Implement and maintain secure network configurations, including patching, updates, and compliance hardening.
  • Support hybrid and multi-cloud connectivity, including Azure ExpressRoute and AWS Direct Connect.
  • Operate and maintain wide area network (WAN) infrastructure, including dual MPLS circuits per site and high-speed interconnection.
  • Support Trusted Internet Connections (TIC) and managed security services, including Lumen MTIPS and Cloudflare-based TIC 3.0 alignment.
  • Administer segmented network environments supporting operational systems, including associated firewalls and supporting infrastructure.
  • Support telecommunications and transition initiatives, including EIS Task Orders and migration from legacy voice/video systems to Microsoft Teams-based solutions.
  • Integrate network telemetry and security monitoring tools, including platforms such as Corelight and Garland.
  • Ensure compliance with federal policies and directives, including OMB M-21-31 requirements for event logging and network visibility.
  • Maintain and update network documentation, including configurations, standard operating procedures, diagrams, and configuration management artifacts.
  • Collaborate with cross-functional IT teams to support system integration, application delivery, and enterprise architecture alignment.
  • Respond to network alerts, incidents, and service disruptions, ensuring timely resolution and escalation as required.
  • Provide technical support for existing and emerging technologies, including planning and execution of network-related projects and initiatives.
  • Conduct research and provide analysis on emerging networking technologies and their applicability to the organization.
  • Perform installation, replacement, and lifecycle management of network hardware and associated components.

Benefits

  • Medical
  • Dental
  • Vision
  • AD&D
  • STD
  • LTD
  • Company paid Life Insurance
  • 401k with employer contribution
  • Paid Time Off
  • Pet Insurance
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