Network Engineer (TS/Q Clearance required)

General Dynamics - IT; Denver (CO); On-site; USD 120,000 - 180,000; Full time

Job summary

General Dynamics - IT seeks an experienced Network Engineer to design, implement, and maintain complex Cisco-based networks supporting the Department of Energy's NNSA programs in a Denver, CO site. You will help ensure performance, security, reliability, and scalability for critical government operations.

The role emphasizes hands-on engineering across LAN/MAN/WAN, monitoring, troubleshooting, and capacity planning, with a focus on risk reduction, vendor coordination, and rigorous documentation.

Qualifications

• Bachelor's degree or equivalent years of experience.
• 10+ years of network engineering experience.
• DOE Q or TS clearance required.
• Deep knowledge of Cisco routers, switches, firewalls, wireless technologies, and network design principles.
• Experience with BGP, OSPF, EIGRP, STP, RSTP, VXLAN, and LACP.
• Understanding of network security practices and compliance with organizational standards.

Responsibilities

• Infrastructure design and implementation for LAN, MAN, and WAN environments.
• Monitor, troubleshoot, and optimize network performance and reliability.
• Analyze traffic patterns and provide capacity planning solutions.
• Coordinate with vendors for issue resolution and escalation.
• Configure system-level designs, hardware, OS, and platform specs to meet requirements.
• Evaluate new network products and technologies for quality and standards compliance.
• Provide technical oversight across network operations, security protocols, and systems integration.
• Contribute to policy discussions with insights on standards and budgets.
• Conduct testing and optimization of network hardware and connectivity components.
• Identify opportunities to enhance performance and security across the network.
• Create and maintain detailed documentation of configurations and processes.

Skills

Cisco routing

Cisco switching

Firewalls

Wireless tech

Network design

BGP

OSPF

EIGRP

STP

RSTP

VXLAN

LACP

Network security

Hardening

Compliance

Education

Bachelor's degree

Tools

Juniper

Palo Alto

Job description

Position Title:

Network Engineer Position Summary:GDIT is seeking an experienced Network Engineer to join our team supporting mission-critical operations for the Department of Energy's National Nuclear Security Administration (NNSA). In this role, you will design, implement, maintain, and troubleshoot complex network systems to ensure optimal performance, security, reliability, and scalability in a large-scale Cisco environment. This is an exciting opportunity to apply your expertise in network infrastructure and security best practices to advance enterprise IT capabilities for critical government programs.

Responsibilities:

• Infrastructure Design & Implementation: Design, build, and implement network systems for LAN, MAN, and WAN environments, ensuring they meet performance and scalability requirements.


• System Monitoring & Troubleshooting: Monitor and diagnose network issues, performing root-cause analysis to address connectivity problems and optimize operations.


• Traffic Analysis & Capacity Planning: Analyze network traffic patterns and provide capacity planning solutions to support infrastructure growth and performance improvements.


• Vendor Coordination: Interface with vendor support services to ensure timely resolution of issues and proper escalation during outages or performance degradations.


• System Configuration: Perform system-level design and configuration, determining hardware, operating systems, and platform specifications to meet operational requirements.


• Quality Assurance: Evaluate and test new and existing network products and technologies, ensuring they align with organizational standards and quality protocols.


• Network Operations Oversight: Provide technical assistance and oversight across all network operations, including LAN/MAN/WAN administration, security protocols, and systems integration.


• Policy Input: Contribute to policy discussions by providing insights on standards, technical constraints, and budget considerations impacting network operations.


• Testing & Optimization: Conduct routine testing and analysis of network hardware, communications systems, and connectivity components.


• Performance Enhancements: Identify opportunities for network optimization and implement improvements to maximize system performance and security.


• Documentation: Create and maintain detailed documentation for network configurations, processes, and procedures to support operational consistency.

Minimum Qualifications:

• Education: Bachelor's degree or equivalent years of experience. Having a Cisco certification would be more valuable


• Experience: 10+ years of professional experience in network engineering, infrastructure design, and circuit troubleshooting involving routing & switching protocols.


• Security Clearance: DOE Q or TS clearance required.


• Technical Expertise: Deep knowledge of Cisco routers, switches, firewalls, wireless technologies, and network design principles. (Experience with Juniper and Palo Alto also a plus)


• Expertise in protocols like BGP, OSPF, EIGRP, STP, RSTP, VXLAN, and LACP.


• Understanding of network security practices, including system hardening and compliance with organizational standards.

Preferred Qualifications:

• DOE Experience: Previous experience working with the Department of Energy or similar federal agencies.


• DNS & Configuration Expertise: Familiarity with Microsoft DNS and Unix BIND systems.


• Compliance Standards: Experience with DISA STIGs and other security frameworks required for federal compliance.


• CCNA, CCNP, CCDA, CCIE, or other Cisco certification

Work Location:

• Onsite at client site in Denver, CO

Citizenship:

• US Citizenship required.

Security Clearance:

• DOE Q or TS clearance required.

Why Join GDIT?

At GDIT, your contributions help deliver solutions that ensure national security and operational excellence.

Professional Growth:

Access internal mobility programs, paid certifications, and continuous learning opportunities to expand your career journey.

Comprehensive Benefits:

• Competitive compensation, health and wellness packages, 401(k) company match, and paid time off

Collaborative Environment:

Work alongside a diverse and innovative team that prioritizes teamwork and high-impact results.

Mission Impact:

Support critical government programs by advancing enterprise IT infrastructure and modernizing essential functions.