Principal Enterprise Network Engineer

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VT-ARC, a technical services and applied research company, has built an organizational culture marked by four primary values:
Teamwork, Integrity, Excellence, and Service. Integral to our success is our staff’s enthusiasm for solving tough problems by working together in teams to get the job done. We foster a culture where every employee’s contribution is valued and performed with integrity while maintaining a fun work environment. VT-ARC strives for excellence in all that is done for our clients, and such achievement is recognized through service/merit awards.

Moreover, we promote a sense of community larger than VT-ARC alone, where staff and institutional resources can be applied in service to our country.

We are proud to be the recipient of the Best Workplace in Defense Award by Emergent Magazine, an honor that recognizes companies with positive cultures that not only impact their people but also make a meaningful difference in the community.

You are a senior to principal-level enterprise network engineering subject matter expert with deep, hands‑on experience designing, implementing, integrating, and modernizing data center networks and enterprise firewalls in mission‑critical environments. You combine strong routing and switching fundamentals with practical expertise in firewall policy, secure segmentation, high availability, and network troubleshooting.

You have experience across data center, WAN, and LAN environments, including internet‑connected enterprise networks, classified enclaves, multi‑site mission networks, and fully air‑gapped environments. You understand how to integrate firewalls, load balancers, and physical and virtual infrastructure into resilient, secure network architectures that support mission operations, performance, and long‑term modernization.

You are comfortable leading complex architecture and integration efforts while remaining hands‑on with design, implementation, troubleshooting, documentation, and deployment. You thrive in high‑assurance environments where reliability, security, interoperability, and disciplined execution are essential. You provide technical leadership and work closely with network engineering, cybersecurity, infrastructure, unified communications, and performance engineering teams.

VT-ARC is seeking a Senior to Principal Enterprise Network Engineer with a focus on data center networking and firewall engineering to serve as a senior technical authority for enterprise network architecture, implementation, sustainment, and modernization supporting mission‑critical programs within TS/SCI environments.

This role spans the full network lifecycle, from requirements interpretation and architecture input through detailed design, implementation, validation, documentation, and operational transition. The primary emphasis is data center network design and buildout, enterprise firewall implementation, secure segmentation, high availability, and integration with the broader enterprise network. The position remains multi‑vendor and includes connectivity across WAN, LAN, classified, air‑gapped, and multi‑enclave environments.

This is a hands‑on, principal‑level network engineering role responsible for translating mission and architecture objectives into executable network designs, implementation plans, and operationally supportable solutions. The Principal Enterprise Network Engineer will provide technical guidance to network, cybersecurity, and infrastructure teams while actively contributing to…