> Markdown version of [/jobs/ext/4168295-senior-network-engineer](https://www.wearedevelopers.com/jobs/ext/4168295-senior-network-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Network Engineer - **Company:** General Dynamics Information Technology - **Location:** Livermore, CA, United States - **Experience:** Expert - **Salary:** $153,000.0 - $207,000.0 - **Contract:** Permanent contract - **Skills:** IEEE 802.1X, Border Gateway Protocol, Spanning Tree Protocols, Cisco IOS, Cisco Routers, Linux, Enhanced Interior Gateway Routing Protocol, Networking Hardware, Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), Python (Programming Language), Linux System Administration, Microsoft Visio, Multicasting, Network Diagrams, Network Planning and Design, Network Diagnostics, Network Monitoring, Routing, Cisco Nexus Switches, Open Shortest Path First (OSPF), Red Hat Enterprise Linux, Ansible, Virtual Local Area Networks, Network Switches, Nx-os, Firewalls (Computer Science), Information Technology, SolarWinds (Software), Firepower, Splunk, Cisco Switches, Big Ip, Cisco - **Published:** October 22, 2026 - **Apply:** https://www.techcareers.com/job.asp?id=3472108271&tx=KP6565FFJ&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 Cisco IOS,Internet Protocol Security (IPsec),Linux,Network Monitoring Tools,Routing and Switching Certifications: Certified Network Professional Enterprise (CCNP) | Cisco - Cisco Experience: 8 + years of related experience, * Experience with Cisco IOS, Cisco Routers and Switches, Internet Protocol Security (IPsec), Switching Protocols, Virtual Private Networks (VPNs), * Displays a comprehensive understanding of routing and switching protocols to include but not limited to OSPF, BGP and EIGRP, VLAN's, Spanning Tree, Multicast, etc * Has an in-depth understanding of Cisco IOS platforms and practical knowledge of networking topologies (LAN, WAN) and hands on experience with IPSec VPNs * Experience with network diagnostic, monitoring and analysis tools (e.g., SolarWinds, Splunk, Ansible, Python or other network monitoring tools) * Design, implement, and maintain complex LAN/WAN infrastructures, including routing, switching, and secure VPN connectivity * Ensure network integrity, compliance with security policies (STIGS/NIST), and proper backup and recovery processes * Responsible for installation, configuration, management, and troubleshooting of F5 BIG-IP systems to ensure applications are fast, available, and secure. * Proven ability to analyze, diagnose, and resolve complex performance and connectivity issues * Proven experience with Cisco Secure Firewalls (FTD/FMC), ISE, and 802.1x authentication, including device access troubleshooting on network switches * Evaluate and integrate new communications technologies to enhance network performance, security, and scalability * Responsible for creating network diagrams using Microsoft Visio * Responsible for documenting network design and creating Standard Operating Procedures for installation and configuration of network devices * Maintain current knowledge of evolving network and automation technologies * Collaborate effectively with cross-functional teams and provide mentorship when needed * Linux system administration (RedHat Enterprise) preferred * Configure and administer Cisco routers, switches, secure firewalls, and ISE for identity-based access control and 802.1x authentication * Excellent communications skills and ability to interact with both clients and teammates, * Must possess and maintain a TS/SCI clearance with CI polygraph. * Education: BA/BS degree or equivalent work experience * Experience: 8-10+ years of related experience * Certifications: DoD 8570.01, Cisco CCNP (active) required * Certifications: Cisco CCNA, CCNP Enterprise, CCNP Security, F5 certification Desiree Qualification. * Knowledge of Cisco Catalyst and Cisco Nexus series switches * Knowledge of F5 BIG-IP * Knowledge of Cisco ISR Gen2 (1900, 2900, 3900 series) and ISR Gen3 (4000 series) routers * Knowledge of Cisco Firepower 2100 series firewalls. * Knowledge (to include instillation) of KG-175, KG-250 and other NSA Cryptographic devices. * Knowledge of configuration of Cisco IOS-XE 17.x and NX-OS 10.x ## Description Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the mission to keep our country safe and secure.