Senior Network Engineer TS/SCI — VPN & Security

GDIT; Colorado Springs (CO); On-site; USD 97,750 - 132,250; Full time

Job summary

GDIT is seeking a Senior Network Engineer to manage and optimize our critical network infrastructure at a central hub location, ensuring secure connectivity to remote sites via VPN. You will maintain stability, performance, and security of the network environment to support mission operations.

The ideal candidate has 10+ years of network engineering experience, hands-on experience with DMVPN/GRE tunnels, and strong routing/switching expertise.

Qualifications

• Bachelor’s degree or the equivalent combination of education, technical experience
• Active TS/SCI security clearance
• 10+ years Network Engineering experience
• Demonstrated mastery configuring/troubleshooting DMVPN and GRE tunnels
• Proven expertise in routing/switching protocols (EIGRP, BGP, STP, IKEv2, ESP, SIP, SCCP)
• Expertise in network security policy implementation and security device configuration
• Proven proficiency with HAIPE encryption devices (GDMS, ViaSat)
• Demonstrated teamwork and collaboration skills
• Ability to work efficiently in a fast-paced environment
• Strong organizational, prioritization, and autonomous work skills
• Excellent verbal and written communication skills
• Results-driven, efficient, energetic, and highly motivated

Responsibilities

• Implement and maintain network security policies, ensuring firewalls and security devices are configured to protect organizational data and systems
• Ensure high availability, redundancy, and optimal performance of the central service node’s network infrastructure, supporting critical applications and services
• Design, configure, and manage secure VPN connections to provide reliable communication between remote locations
• Maintain and optimize network equipment, including routers, firewalls, switches, and encryption devices, ensuring stable and efficient connectivity
• Administer and support key network‑related software, including Cisco Call Manager (VoIP), SolarWinds (network monitoring), and Microsoft NPS (access control)
• Diagnose and resolve network issues, providing timely support to both local and remote users to minimize downtime
• Participate in network capacity planning, ensuring the infrastructure scales effectively to meet mission demands
• Maintain detailed network documentation, including configurations, diagrams, and troubleshooting procedures, for operational efficiency
• Collaborate with IT teams and stakeholders, ensuring smooth communication on network‑related initiatives
• Ensure compliance with industry regulations and security standards, maintaining best practices across all network operations
• Provide on‑call support for critical network issues, ensuring swift resolution during off‑hours

Skills

Data Communication Networks

Network Engineering

Network Operations

Education

Bachelor’s Degree

Tools

Cisco Call Manager

SolarWinds

Microsoft NPS

Job description

GDIT is seeking a Senior Network Engineer to manage and optimize our critical network infrastructure at a central hub location, ensuring secure connectivity to remote sites via VPN. You will maintain stability, performance, and security of the network environment to support mission operations.

The ideal candidate has 10+ years of network engineering experience, hands-on experience with DMVPN/GRE tunnels, and strong routing/switching expertise.