Senior Network Engineer

General Dynamics Information Technology•Livermore, CA

15d•Onsite

About The Position

GDIT is hiring a Senior Network Engineer to support a customer onsite in Livermore, California. The role supports a government mission and involves designing, implementing, maintaining, and securing complex LAN/WAN infrastructure, including routing, switching, and VPN connectivity. The engineer will administer Cisco network devices and F5 BIG-IP systems, maintain network integrity and security compliance, and troubleshoot complex performance and connectivity issues. The position requires a current Top Secret/SCI clearance with CI polygraph and U.S. citizenship. The schedule is 40 hours per week, with less than 10% travel.

Requirements

Must be a U.S. citizen.
Must possess and maintain a Top Secret/SCI clearance with CI polygraph.
Bachelor of Arts/Bachelor of Science degree or equivalent work experience.
8–10+ years of related experience.
Active DoD 8570.01 and Cisco CCNP certifications required.
Experience with Cisco IOS, Cisco routers and switches, IPsec, switching protocols, and VPNs.
Comprehensive understanding of routing and switching protocols, including OSPF, BGP, EIGRP, VLANs, Spanning Tree, and multicast.
In-depth understanding of Cisco IOS platforms and practical knowledge of LAN/WAN networking topologies.
Hands-on experience with IPsec VPNs.
Experience with network diagnostic, monitoring, and analysis tools, such as SolarWinds, Splunk, Ansible, Python, or other network monitoring tools.
Proven experience with Cisco Secure Firewalls (FTD/FMC), ISE, and 802.1x authentication.
Excellent communication skills and ability to interact with clients and teammates.

Nice To Haves

Linux system administration, preferably Red Hat Enterprise.
Cisco CCNA, CCNP Enterprise, or CCNP Security certification.
Knowledge of Cisco Catalyst and Cisco Nexus switches.
Knowledge of F5 BIG-IP.
Knowledge of Cisco ISR Gen2 (1900, 2900, and 3900 series) and ISR Gen3 (4000 series) routers.
Knowledge of Cisco Firepower 2100 series firewalls.
Knowledge of, including installation of, KG-175, KG-250, and other NSA cryptographic devices.
Knowledge of Cisco IOS-XE 17.x and NX-OS 10.x configuration.
F5 certification.

Responsibilities

Design, implement, and maintain complex LAN/WAN infrastructures, including routing, switching, and secure VPN connectivity.
Ensure network integrity, compliance with security policies such as STIGs and NIST, and appropriate backup and recovery processes.
Install, configure, manage, and troubleshoot F5 BIG-IP systems to support application performance, availability, and security.
Analyze, diagnose, and resolve complex network performance and connectivity issues.
Configure and administer Cisco routers, switches, secure firewalls, and ISE for identity-based access control and 802.1x authentication.
Troubleshoot device access issues on network switches.
Evaluate and integrate communications technologies to improve network performance, security, and scalability.
Create network diagrams using Microsoft Visio.
Document network designs and create standard operating procedures for installing and configuring network devices.
Maintain current knowledge of evolving network and automation technologies.
Collaborate with cross-functional teams and provide mentorship when needed.

Benefits

Comprehensive benefits and wellness packages.
401(k) plan with company match.
Competitive pay.
Paid time off, including vacation, sick and personal time, holidays, and other leave plans.
Medical plan options, some with Health Savings Accounts.
Dental plan options.
Vision plan.
Full-flex work weeks where possible.
Short- and long-term disability benefits.
Life insurance and other insurance offerings, including accidental death and dismemberment, personal accident, critical illness, and business travel and accident insurance.