×
Register Here to Apply for Jobs or Post Jobs. X

Senior Network Engineer

Job in Livermore, Alameda County, California, 94551, USA
Listing for: General Dynamics Information Technology
Full Time position
Listed on 2026-03-04
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Job Description & How to Apply Below
** Req :
** RQ210878

** Type of

Requisition :
** Regular

** Clearance Level Must Be Able to Obtain:
** Top Secret SCI + Polygraph

** Public Trust/Other

Required:

** None

** Job Family:
** IT Infrastructure and Operations

*
* Skills:

*
* 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

** US Citizenship

Required:

*
* Yes

*
* Job 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.

** Key Skills for Success:*
* +

Experience with Cisco IOS, Cisco Routers and Switches, Internet Protocol Security (IPsec), Switching Protocols, Virtual Private Networks (VPNs)

** Principal

Duties / Responsibilities:

*
* + Design, plan, build, and maintain secure communications networks supporting enterprise and hybrid environments.

+ Configure routers, switches, firewalls, and IPSec-based VPN solutions for LAN, WAN, and remote-access connectivity.

+ Coordinate LAN/WAN hardware/software improvements and/or enhancements.

+ Ensure network reliability, scalability, and compliance while leveraging automation and emerging technologies to enhance operational efficiency and support mission-critical business operations.

+ Provide current network diagrams and other documentation.

+ Display a comprehensive understanding of routing and switching protocols (OSPF, BGP, EIGRP, VLAN, Spanning Tree, Multicast).

+ 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., Solar Winds, Splunk).

+ Design, implement, and maintain complex LAN/WAN infrastructures, including routing, switching, and secure VPN connectivity.

+ Ensure network integrity, compliance with security policies, and proper backup and recovery processes.

+ Install, configure, manage, and troubleshoot F5 BIG-IP systems to ensure applications are fast, available, and secure.

+ 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.

+ Create network diagrams using Microsoft Visio.

+ Document network design and create Standard Operating Procedures for the 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 (Red Hat Enterprise) preferred.

+ Configure and administer Cisco routers, switches, secure firewalls, and ISE for identity-based access control and 802.1x authentication.

*
* Required Qualifications:

*
* + Must possess and maintain a TS/SCI clearance with lifestyle polygraph.

+

Education:

BA/BS degree or equivalent work experience.

+

Experience:

8+ years of related experience.

+

Certifications:

DoD 8570.01, Cisco CCNP (active) required.

+ Additional

Certifications:

Cisco CCNP Enterprise, CCNP Security, Dev Net, F5 certification.

+ US citizenship.

** 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 series firewalls.

+ Knowledge (including installation) of NSA Cryptographic devices (KG-175, KG-250).

+ Knowledge of configuration of Cisco IOS 15.x, Cisco IOS-XE 16.x, and NX-OS 9.x.

*
* Location:

*
* + On Customer Site

** Citizenship:*
* + US Citizenship Required

GDIT IS YOUR PLACE

At GDIT, the mission is our purpose, and our people are at the center of everything we do.

● Growth: AI-powered career tool that identifies career steps and learning opportunities

● Support:
An internal mobility team focused on helping you achieve your…
Position Requirements
10+ Years work experience
To View & Apply for jobs on this site that accept applications from your location or country, tap the button below to make a Search.
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
 
 
 
Search for further Jobs Here:
(Try combinations for better Results! Or enter less keywords for broader Results)
Location
Increase/decrease your Search Radius (miles)

Job Posting Language
Employment Category
Education (minimum level)
Filters
Education Level
Experience Level (years)
Posted in last:
Salary