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# TSSCI Senior Network Engineer

- **Company:** Insight Global
- **Location:** Arlington, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Xacta, Microsoft Windows, VoIP, Cisco Unified Communications Manager, System Configuration, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), Hyper-V, IP Addressing, Intrusion Detection Systems, Virtual Private Networks (VPN), Network Security, Windows Servers, Network Planning and Design, Network Monitoring, Routing, Network Segmentation, Performance Tuning, Virtual Local Area Networks, Software Vulnerability Management, In-Plane Switching (IPS), Firewalls (Computer Science), Information Technology, Cisco, Plan of Action and Milestones
- **Published:** November 8, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3505250532&tx=IT8679TTT&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* Bachelor's degree in information technology or a related technical field, plus strong technical documentation, communication, organization, and customer-engagement skills.
 * Seven or more years of hands-on enterprise network/security administration and engineering experience, including network design, installation, operations, maintenance, troubleshooting, security, and performance optimization.
 * Three or more years of federal FISMA/RMF security-control validation and compliance experience, including NIST SP 800-53 controls, SSPs, POA&Ms, continuous monitoring, technical control evidence, vulnerability/configuration findings, remediation, annual assessment readiness, and hands-on Xacta/Xacta 360 experience.
 * Current Cisco Certified Network Associate (CCNA) or Cisco Certified Network Professional (CCNP) certification. CCNP is strongly preferred.
 * Must have experience administering Cisco CUCM/Call Manager and enterprise VoIP technologies, including SIP, QoS, voice VLANs, and voice gateways.
 * Demonstrated ability to independently own enterprise network operations and complex Cisco routing, switching, VLAN, firewall, VPN, DNS/DHCP, IP addressing, network monitoring, and connectivity troubleshooting in a production environment.
 * Hands-on experience configuring, administering, and maintaining firewalls, VPNs, IDS/IPS, network segmentation, ACLs, secure remote-access solutions, network security devices, and vulnerability remediation.
 * Hands-on experience with Windows operating systems, Windows Server/Hyper-V, and Linux, with the ability to support network dependencies across virtualized and identity/access environments.

## Description

We are seeking a TS/SCI-cleared Senior Network Engineer to own and support a secure Cisco network environment, including troubleshooting, maintenance, security, and unified communications. The role also supports FISMA/RMF compliance, NIST 800-53 controls, POA&M remediation, and Xacta 360, making federal cybersecurity compliance experience highly preferred.