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Agile Defense

Cybersecurity and IT services for government

Senior Network Engineer

Network Engineering & AdministrationConfirmed live in the last 24 hours
Full-timeAshburn, VA, USA$120k - $140k /yr

About the Job

Requirements

  • Bachelor’s degree in management information systems, Computer Science, Engineering, or a related technical field (e.g. Networking and Telecommunications) with 10+ years of experience performing network engineering, or 14+ years of network engineering experience without a bachelor’s degree.
  • At least ten years of verifiable network engineering experience supporting a large, complex federal agency.
  • Strong knowledge of networking protocols, including TCP/IP, BGP, OSPF, EIGRP, MPLS, VPNs, and VLANs.
  • Expertise and experience with Cisco technology and firewall technologies, including the ability to perform firewall changes.
  • Hands-on experience with software-defined networking technologies such as Cisco ACI or VMware NSX.
  • Ability to travel within the United States on short notice or as scheduled, up to 35% of the time.
  • Ability to sit for long periods.
  • Readiness to support a 24/7/365 on-call rotation and respond to Tier 3 critical network incidents within service-level agreement limits.

Responsibilities

  • Engineer, maintain, configure, and troubleshoot wide-area networks, local-area networks, software-defined wide-area networks, virtual private networks, wireless networks, and perimeter security controls in accordance with customer standards and mandates.
  • Configure, deploy, and support enterprise-grade switches, routers, firewalls, VPN gateways, logging baselines, and load balancers across DHS operational environments.
  • Provide Tier 2 and Tier 3 escalation support for network outages, circuit degradations, and performance issues; conduct root cause analyses and coordinate vendor support.
  • Support the planning, installation, and cutover of network hardware upgrades, software-defined wide-area networking transitions, cloud interconnects, remote field sites, and infrastructure modernization.
  • Design, implement, and maintain a software-defined wide-area networking solution that extends software-defined networking principles and supports multiple network transports, including dedicated internet access, broadband internet, MPLS, 4G/LTE/5G, and satellite, at remote sites.
  • Use software-defined wide-area networking virtualization capabilities to route traffic based on application type, predefined routing policies, and network performance requirements.
  • Maintain accurate network diagrams using Visio, topology maps, inventory databases, standard operating procedures, and change-control tickets using ServiceNow or Remedy.
  • Coordinate cross-functional escalation pathways and, when required to restore services, provide a solution and implement an Emergency Change Request, Emergency Break Fix, or Change Request.
  • Participate in root cause or post-incident analysis of problems involving mission-critical applications, mission-essential applications, mission-essential network infrastructure, and recurring enterprise IT infrastructure issues.
  • Partner with program and project managers to align network engineering deliverables, milestone schedules, and resource planning with enterprise project objectives.

Desired Qualifications

  • An active CBP background investigation or one completed within the past three years.
  • Active industry certifications such as CCNA or CCNP in routing and switching.
  • Experience with Zero Trust, Zscaler, and Palo Alto technologies.
  • Previous CBP experience; DHS or Department of War experience is also valued.
  • Advanced skills in three or more of Cisco SD-WAN, Cisco HyperFlex, Cisco Stealthwatch, Cisco Application Centric Infrastructure, and Cisco Firepower.
  • Willingness to be cross-trained in the listed technologies.

About the Company

Agile Defense

Cybersecurity and IT services for government

Agile Defense provides IT and cybersecurity services to the U.S. Federal Government, including digital transformation, IT modernization, and a Virtual Security Operations Center (VSOC) to defend against cyber threats. Its services support national security and civilian missions across federal agencies, delivered through various contract vehicles. The company expands its capabilities through acquisitions (IntelliBridge and XOR Security) and focuses on AI-enabled workforce transformation and enterprise IT to enhance government operations. Unlike many suppliers, Agile Defense emphasizes a government-focused portfolio with a multidimensional VSOC and AI-driven workforce upgrades, positioning itself to meet federal security and modernization needs. The goal is to help federal agencies protect data and systems, modernize IT infrastructure, and improve cyber resilience across national security and civilian missions.

Company size
1,001-5,000
Company stage
Acquired
Total funding
Not listed
Headquarters
Reston, VA
Founded
1998

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