> Markdown version of [/jobs/ext/1485158-network-engineer-senior-ts-sci-with-polygraph-required](https://www.wearedevelopers.com/jobs/ext/1485158-network-engineer-senior-ts-sci-with-polygraph-required). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Network Engineer (Senior) - TS/SCI with Polygraph Required

- **Company:** Catalyst
- **Location:** Vienna, VA, United States
- **Experience:** Expert
- **Salary:** $195,000.0 - $235,000.0
- **Contract:** Permanent contract
- **Skills:** Border Gateway Protocol, Networking Hardware, Virtual Private Networks (VPN), Multi-protocol Systems, Network Security, Network Planning and Design, Routing, Open Shortest Path First (OSPF), Software Deployment, Computer Network Operations, Juniper, Network Support, Cisco
- **Published:** July 29, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=dff9d3e9bdf0518c

## About the Role

US Citizenships and TS/SCI with Polygraph (no exceptions), * Bachelor's degree and 7-11 years of relevant network engineering experience (Master's degree and 5-9 years also acceptable); additional relevant experience may be considered in lieu of a degree, * Demonstrated experience in Tier III or higher network operations and/or network design and implementation

 * Strong expertise configuring and troubleshooting production network hardware (e.g., Cisco, Juniper, Brocade)
 * Demonstrated experience with routing and switching protocols (e.g., OSPF, BGP, MPLS, VRF, VPN) at an enterprise scale
 * Experience developing secure network designs in compliance with industry and government guidelines
 * DoD 8140/8570 Information Assurance Technical (IAT) Level II certification required
 * Experience supervising network support specialists during implementation and evaluating new technologies prior to deployment
 * Strong critical thinking, technical writing, and oral communication skills, including the ability to present technical solutions to customers
 * Senior positions review and guide the work of Junior and Mid-Level network engineers

## Description

Senior Network Engineers lead the design, implementation, and troubleshooting of complex enterprise network infrastructure in support of the customer's requirements. Senior Network Engineers develop secure network designs per industry and government guidelines, resolve complex Tier III network operations and design issues, and evaluate new networking technologies in lab environments prior to production deployment. Senior Network Engineers are expected to supervise network support specialists during implementation, coordinate maintenance activities with minimal service disruption, and provide technical expertise across CONUS and OCONUS network environments.


## Related Videos

- [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team)
- [Cyber Sleuth: Finding Hidden Connections in Cyber Data](https://www.wearedevelopers.com/videos/893-cyber-sleuth-finding-hidden-connections-in-cyber-data)
- [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch)
- [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy)
- [A Technical Introduction to Bitcoin's 2nd Layer- The Lightning Network](https://www.wearedevelopers.com/videos/15-a-technical-introduction-to-bitcoin-s-2nd-layer-the-lightning-network)
- [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure)

## Related Articles

- [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)
- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)
- [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs)
- [System change: restart as developer?](https://www.wearedevelopers.com/magazine/39-system-change-restart-as-developer)
- [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer)