Senior Network Engineer; TS​/SCI – Secure VPN & WAN Expert

Type of Requisition:

Clearance Level Must Currently Possess:

Clearance Level Must Be Able to Obtain:

Public Trust/Other Required:

Job Family:

Job Qualifications:

Skills:

Certifications:

Experience:

US Citizenship

Required:

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 an active TS/SCI clearance with the ability to obtain an FSP.

• 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 Agency 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:
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● Rewards:
Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off

●…