Senior Network Engineer – Secure Enterprise Ops

CDW group; Town of Florida (NY); On-site; USD 160,000 - 220,000; Full time

Job summary

CDW is seeking a Senior Network Engineer to support mission-critical infrastructure in a secure federal environment. The role requires an active TS/SCI clearance and focuses on design, implementation, administration, troubleshooting, and sustainment of enterprise network systems.

You will design and maintain LAN/WAN, VPN, routing, switching, firewalls, and security controls while ensuring high availability and compliance with DoD and RMF requirements.

Qualifications

• Active TS/SCI clearance required.
• U.S. citizenship required due to federal security requirements.
• Senior-level hands-on experience in enterprise network engineering within federal, defense, or similarly secure environments.
• Strong routing and switching skills, VLANs, trunking, subnetting, routing protocols, redundancy, and network segmentation.
• Experience with Cisco or comparable network platforms, firewalls, VPNs, load balancers, wireless systems, and network management tools.
• Ability to create clear technical documentation, diagrams, implementation plans, and operational procedures.
• Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, Engineering, or related field; 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 within program requirements; CCNP certification is a plus.
• Experience with network automation, configuration management, scripting, or orchestration tools is a plus.
• Experience supporting classified networks, multi-enclave environments, cross-domain considerations, or secure transport solutions is a plus.
• Familiarity with INFOSEC, COMSEC, encryption, zero trust principles, and secure network design practices is a plus.

Responsibilities

• Design, configure, implement, and maintain enterprise network infrastructure, including LAN, WAN, VPN, routing, switching, firewall, wireless, and related network technologies.
• Perform day-to-day network operations and maintenance, including monitoring, troubleshooting, incident response, upgrades, patching, and lifecycle support.
• Diagnose and resolve complex network issues affecting availability, performance, connectivity, latency, and security 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 provide recommendations for upgrades, modernization, resiliency, and performance improvement.
• 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.

Skills

Active TS/SCI clearance

Routing & switching

Networking protocols

Firewall configuration

Network security

Documentation

Education

Bachelor's degree in Computer Science/IT/Engineering

DoD 8570/8140 IAT Level II certification

CCNP certification

Tools

Cisco IOS

SNMP

Splunk

SolarWinds

Job description

CDW is seeking a Senior Network Engineer to support mission-critical infrastructure in a secure federal environment. The role requires an active TS/SCI clearance and focuses on design, implementation, administration, troubleshooting, and sustainment of enterprise network systems.

You will design and maintain LAN/WAN, VPN, routing, switching, firewalls, and security controls while ensuring high availability and compliance with DoD and RMF requirements.