> Markdown version of [/jobs/ext/600487-network-engineer-senior](https://www.wearedevelopers.com/jobs/ext/600487-network-engineer-senior). 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

- **Company:** Nationwide IT Service, Inc.
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Access, IEEE 802.1X, Cisco Routers, Dynamic Host Configuration Protocol, Domain Name System (DNS), Virtual Private Networks (VPN), Network Security, Network Layer, Network Diagrams, Routing, Network Segmentation, Zero Trust Network Access, SAP Sales and Distribution, Security Information and Event Management, Virtual Local Area Networks, Software Vulnerability Management, Identity Services Engine, Firewalls (Computer Science), Information Technology, Cisco
- **Published:** June 23, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8989569/network-engineer-senior

## About the Role

* 8+ years of progressive enterprise network engineering in Cisco environments (senior level).
 * Architecting and operating core, distribution, access, and edge; routing, switching, VLANs, enterprise DNS, DHCP, and VPNs to hardened, documented standards.
 * Zero Trust at the network layer: segmentation and micro-segmentation, least-privilege and identity-aware access, and 802.1X., * Recommended (to be competitive): Cisco CCNP Enterprise (CCIE preferred); a security or Zero Trust credential (e.g., Security+ or a Cisco security cert) is a plus.
 * Bachelor's in IT, Computer Science, or Engineering, or equivalent experience. Current certifications, ideally maintained 5+ years.

Key Technical Skills

 * Cisco routers, switches, and firewalls; Cisco ISE for 802.1X / NAC; TrustSec / SD-Access or VLAN-and-ACL segmentation; VPNs; enterprise DNS/DHCP; SIEM and NDR integration; hardened Cisco baselines; configuration and change management.

## Description

Nationwide IT Services, NIS, is seeking a senior network engineer to provide engineering, operations, optimization, and advisory support for CBO's Cisco-based enterprise network across the core, distribution, access, and edge layers. Serves as CBO's senior technical adviser, leads remediation of identified incident-response (IR) findings, and enforces Zero Trust across the network. Works with minimal supervision and resolves the most complex faults escalated from the service desk., * Network security and compliance to NIST SP 800-53 (AC, CM, SC, AU), SP 800-207, and Cisco hardening best practices; continuous monitoring and vulnerability management.

 * Incident-response support: containment, analysis, forensics, root-cause analysis, and remediation of findings.
 * Perimeter and public-facing security: firewall rule management, ingress/egress filtering, MFA for administrative access.
 * Change management with security-impact analysis; network diagrams, SOPs, and configuration baselines.
 * Senior advisory; collaborates with cloud, Microsoft, and cybersecurity teams; supports audits and assessments.


## 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)
- [Small, Secure, Interconnected: The next Internet Protocol](https://www.wearedevelopers.com/videos/100062-small-secure-interconnected-the-next-internet-protocol)
- [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)
- [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right)
- [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)
- [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)

## Related Articles

- [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)
- [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)
- [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)
- [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market)
- [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs)
- [Top Must-Visit Developer Conferences in the US in 2026](https://www.wearedevelopers.com/magazine/679-top-must-visit-developer-conferences-in-the-us-in-2026)