Senior Network Engineer

General Dynamics IT; Livermore (CA); On-site; USD 153,000 - 207,000; Full time

Job summary

General Dynamics IT is seeking an experienced IT Infrastructure professional to own and advance the mission-critical network and security operations on customer-site deployments in Livermore, CA. You will manage complex LAN/WAN infrastructures, ensure secure VPN connectivity, and uphold stringent security policies.

The role requires TS/SCI with CI polygraph, a BA/BS or equivalent, and active Cisco CCNP along with F5 certification.

Qualifications

• 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.

Responsibilities

• Display a comprehensive understanding of routing and switching protocols (OSPF, BGP, EIGRP) and VLANs, Spanning Tree, Multicast, etc.
• Hands-on experience with IPSec VPNs and Cisco IOS platforms in LAN/WAN environments.
• Utilize network diagnostic and analysis tools (e.g., SolarWinds, Splunk, Ansible, Python).
• Design, implement, and maintain complex LAN/WAN infrastructures with secure VPN connectivity.
• Ensure network security policy compliance (STIGS/NIST) and proper backup/recovery processes.
• Manage installation, configuration, and troubleshooting of F5 BIG-IP systems for performance and security.
• Collaborate with cross-functional teams and mentor junior staff.

Skills

Cisco IOS

IPsec

Linux

Network monitoring tools

Routing and switching

VPNs

Education

BA/BS or equivalent work experience

Tools

SolarWinds

Splunk

Ansible

Python

Job description

Type of Requisition

Regular

Clearance Level Must Currently Possess

Top Secret SCI + Polygraph

Clearance Level Must Be Able to Obtain

Top Secret SCI + Polygraph

Public Trust/Other Required

None

Job Family

IT Infrastructure and Operations

Job Qualifications

Skills: Cisco IOS, Internet Protocol Security (IPsec), Linux, Network Monitoring Tools, Routing and Switching Certifications:

None

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

• 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

Required Qualifications

• 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

Location

On Customer Site

Citizenship

US Citizenship Required

GDIT IS YOUR PLACE

• Growth: AI-powered career tool that identifies career steps and learning opportunities
• Support: An internal mobility team focused on helping you achieve your career goals
• Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
• Flexibility: Full-flex work week to own your priorities at work and at home
• Community: Award-winning culture of innovation and a military-friendly workplace

OWN YOUR OPPORTUNITY

Explore an enterprise IT career at GDIT and you'll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

Salaries for this position

The likely salary range for this position is $153,000 - $207,000. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours

40

Travel Required

Less than 10%

Telecommuting Options

Onsite

Work Location

USA CA Livermore

Total Rewards at GDIT

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and