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# Top Secret - Sr Network Engineer III

- **Company:** Insight Global
- **Location:** Fairfax County, VA, United States
- **Experience:** Expert
- **Salary:** $150,000.0 - $200,000.0
- **Contract:** Permanent contract
- **Skills:** Border Gateway Protocol, Catalyst (Software), Configuration Management, Network Forensics, Network Programming, Routing, Cisco Nexus Switches, Open Shortest Path First (OSPF), Ansible, Virtual Local Area Networks, Scripting, Integrated Service Routers, Terraform, Open Network Automation Platform, Cisco
- **Published:** July 7, 2026
- **Apply:** https://jobs.insightglobal.com/jobs/find_a_job/virginia/hunter-mill/top-secret-sr-network-engineer-iii/job-548021/

## About the Role

o An active Top Secret security clearance.
o 10+ years of experience in network engineering with hands-on responsibility for core enterprise routing and switching infrastructure.
o Bachelor's degree in a technical field is preferred. Relevant experience may substitute for education requirements.
o Subject matter expertise in designing, implementing, and troubleshooting complex routing protocols, including BGP and OSPF.
o Experience with software-defined WAN architectures and implementations.
o Experience with Peplink products.
o Proven experience supporting enterprise switching environments, including VLANs, STP, and related Layer 2 technologies.
o Experience managing and maintaining high-availability, high-performance network backbones in mission-critical environments.
o Hands-on experience with Cisco ASR, ISR, Catalyst, and Nexus platforms.
o Explicit experience performing network traffic analysis.
o Ability to contribute immediately with minimal ramp-up in a mission-critical operational environment.
o CCNP Enterprise Certification.

Nice to Have Skills & Experience

o Expert-level certifications such as CCIE Enterprise or CCIE Security.
o Experience with network automation and infrastructure-as-code, including Terraform.
o Advanced experience with network automation, scripting, or network programming.
o Prior experience supporting classified, sensitive, or high-visibility programs, including defense, intelligence, or national-level missions.
o Experience operating in secure or restricted environments with elevated access controls.
o Experience interfacing with senior government stakeholders and supporting operational decision-making.
o Demonstrated expertise with Ansible and network automation to design and implement scalable, repeatable infrastructure-as-code solutions for configuration management, provisioning, and operational remediation across enterprise networks.

## Description

The Sr. Network Engineer III provides senior-level engineering support for mission-critical enterprise networks. This position is responsible for designing, implementing, and maintaining secure, reliable, and scalable network solutions that support organizational objectives and ensure optimal performance and availability.


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