Senior Network Engineer - TS/SCI Clearance

CDW•Washington, DC
•$160,000 - $220,000

About The Position

The Senior Network Engineer supports mission-critical network infrastructure in a secure federal environment. The role focuses on designing, implementing, administering, troubleshooting, and sustaining enterprise network systems across classified and unclassified environments. The engineer supports secure, highly available network operations and works with government stakeholders, technical teams, vendors, and mission partners to develop secure, scalable solutions. The position also supports network security, compliance, accreditation, and audit activities; evaluates network technologies and modernization opportunities; and provides technical guidance to junior engineers and operations personnel. An active TS/SCI clearance and U.S. citizenship are required. A bachelor’s degree in a related technical discipline is listed, with relevant experience potentially considered in lieu of a degree.

Requirements

  • Active TS/SCI clearance.
  • U.S. citizenship.
  • Senior-level hands-on experience supporting enterprise network engineering, network operations, or infrastructure engineering in federal, defense, intelligence, or similarly secure environments.
  • Strong working knowledge of routing and switching, including VLANs, trunking, subnetting, routing protocols, high availability, redundancy, and network segmentation.
  • Experience configuring, supporting, and troubleshooting Cisco or comparable network platforms, firewalls, VPNs, load balancers, wireless systems, and network management tools.
  • Ability to troubleshoot complex network problems across physical, virtual, and transport layers using logs, packet captures, monitoring tools, and command-line diagnostics.
  • Familiarity with DoD cybersecurity and compliance practices, including DISA STIGs, vulnerability remediation, secure configuration management, and RMF/ATO support.
  • Ability to create clear technical documentation, diagrams, implementation plans, and operational procedures.
  • Strong communication skills, including the ability to brief technical issues, risks, and recommendations to engineering teams, program leadership, and government stakeholders.
  • Ability to work independently in a secure, mission-focused environment while managing multiple priorities and operational requirements.

Nice To Haves

  • Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, Engineering, or a related technical discipline; additional relevant experience may be considered in lieu of a degree.
  • DoD 8570/8140 IAT Level II certification, such as Security+ CE, or ability to obtain it within program requirements.
  • Active CCNP certification.
  • Experience with network automation, configuration management, scripting, or orchestration tools.
  • Experience supporting classified networks, multi-enclave environments, cross-domain considerations, or secure transport solutions.
  • Familiarity with INFOSEC, COMSEC, encryption, zero trust principles, and secure network design practices.
  • Experience with network monitoring and logging tools such as SNMP, SYSLOG, NetFlow, SolarWinds, Splunk, or comparable platforms.
  • Curiosity, a learner’s mindset, willingness to engage with evolving technology and tools, openness to experimentation, and readiness to explore and use AI responsibly.

Responsibilities

  • Design, configure, implement, and maintain enterprise LAN, WAN, VPN, routing, switching, firewall, wireless, and related network infrastructure.
  • Perform network operations and maintenance, including monitoring, troubleshooting, incident response, upgrades, patching, and lifecycle support.
  • Diagnose and resolve complex availability, performance, connectivity, latency, and security issues across classified and unclassified environments.
  • Develop, review, and maintain network architecture diagrams, topology maps, configuration documentation, implementation plans, standard operating procedures, and as-built documentation.
  • Plan and execute network changes through established change-management processes while minimizing operational risk and downtime.
  • Support network security requirements, including secure configuration baselines, access control, vulnerability remediation, STIG compliance, POA&M support, and coordination with cybersecurity teams.
  • Evaluate network hardware, software, and transport solutions and recommend upgrades, modernization, resiliency, and performance improvements.
  • Collaborate with government stakeholders, technical teams, vendors, and mission partners to translate requirements into secure and scalable network solutions.
  • Support accreditation, audit, and compliance activities by providing technical artifacts, configuration data, ports/protocols/services information, and network security documentation.
  • Provide technical guidance and mentorship to junior engineers and operations personnel as needed.
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