Enterprise LAN Engineer

About Us:

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 staffs enthusiasm for solving tough problems by working together in teams to get the job done. We foster a culture where every employees 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.

About You:

You are an enterprise LAN engineer and networking SME with deep experience designing implementing integrating and modernizing campus data center wireless access distribution core and secure enclave networks in classified or high-assurance environments.

You bring broad hands-on depth across switching routing wireless NAC segmentation secure access data center networking network services performance engineering and operational sustainment. You understand how LAN designs must support identity encryption UC mission applications cybersecurity and air-gapped operations.

You are adaptable and comfortable owning complex LAN design and implementation efforts while working closely with technical leadership and across technical teams. You remain hands-on with configuration troubleshooting validation documentation deployment and operational transition. You have a mission focus and take pride in building systems the right way and supporting them end-to-end.

Position Overview:

VT-ARC is seeking a Senior to Staff level Enterprise LAN Engineer to provide technical leadership for LAN engineering campus and data center networking secure enclave integration implementation and modernization supporting mission-critical programs within TS/SCI environments.

This role is focused on domain-level LAN ownership across the full network lifecycle from requirements interpretation and architecture input through detailed design implementation planning integration validation and transition to operations. The role includes holistic LAN engineering across campus data center wireless access distribution core classified multi-enclave and air-gapped network environments.

The Enterprise LAN Engineer will partner with the Principal Enterprise Network Engineer program architecture leadership WAN UC crypto cybersecurity identity infrastructure endpoint and network performance leads to deliver secure resilient interoperable and mission-aligned LAN capabilities.

Active Top Secret/SCI clearance is required.

Duties/Responsibilities:

• Lead end-to-end enterprise LAN engineering activities including architecture input detailed design implementation planning integration validation and operational transition.
• Design implement integrate and modernize LAN infrastructures across campus data center wireless access distribution core classified multi-enclave and air-gapped environments.
• Develop and validate LAN designs that account for routing switching VLANs VRFs NAC wireless segmentation QoS resiliency identity dependencies encryption dependencies and sustainment.
• Implement and troubleshoot enterprise switching routing wireless data center networking network services and secure access technologies.
• Coordinate LAN design dependencies with WAN UC crypto identity cybersecurity endpoint platform and mission application teams.
• Support secure enclave integration access control microsegmentation Zero Trust-aligned network access and defense-in-depth network design.
• Develop implementation plans test plans configuration standards network diagrams migration runbooks and operational transition materials.
• Participate in lab validation proof-of-concept demonstrations technical pilots cutovers and integration events.
• Mentor junior engineers and help establish engineering standards configuration baselines and operational best practices.

Required Education Certification Skills Capabilities:

• Demonstrated senior or lead-level experience designing implementing and modernizing enterprise LAN campus data center wireless or secure enclave networks.
• Hands-on expertise with enterprise switching routing wireless segmentation NAC QoS high availability and LAN troubleshooting.
• Experience with multi-vendor enterprise networking technologies including platforms such as Cisco Juniper Aruba Fortinet Palo Alto F5 or equivalent technologies.
• Experience supporting classified TS/SCI multi-enclave internet-connected or air-gapped network environments.
• Strong practical knowledge of VLANs trunks VRFs routing protocols spanning tree link aggregation wireless design access control DHCP DNS dependencies and network services.
• Ability to translate architecture objectives and mission requirements into executable LAN designs deployment plans configuration baselines and validation approaches.
• Experience supporting RMF processes ATO documentation STIG compliance security controls or equivalent cybersecurity compliance activities for network infrastructure.
• Ability to produce clear technical documentation diagrams implementation guides and operational procedures.

Desired Education Certification Skills Capabilities:

• Professional certifications such as CCNP Enterprise JNCIP Aruba Certified Professional Security CISSP or equivalent technical credentials.
• Experience with data center networking technologies such as VXLAN EVPN Cisco ACI Nexus leaf-spine architectures or equivalent platforms.
• Experience with NAC and secure access technologies such as Cisco ISE Aruba ClearPass 802.1X device profiling or equivalent tools.
• Experience integrating LAN capabilities with Type 1 encryption UC identity certificates endpoint management and mission application environments.
• Experience with network automation scripting APIs Ansible Python Git or related tools.
• Familiarity with DoD networking standards DISA STIGs Zero Trust principles and systems engineering lifecycle reviews.

Primary Work Location: Work is expected to be fully onsite in Arlington VA.

Special Work Conditions: Occasional travel may be required; up to 10%

Security:

• Must be a U.S. Citizen
• Active Top Secret/SCI clearance is required

Competitive Salary: VT-ARC offers a competitive salary and benefits package designed to attract and retain senior technical talent supporting mission-critical programs.

Salary: $185000-$225000/yr. based on skills experience clearance technical depth and mission alignment.

Virginia Tech Applied Research Corporation: VT-ARC is a 501(c)(3) non-profit R&D organization affiliated with Virginia Polytechnic Institute and State University (Virginia Tech or VT). Our mission is to provide superior analytic and technology solutions across multiple domains by leveraging Virginia Techs multidisciplinary research and innovation ecosystem. With unique access to the broad and rich research enterprise found at Virginia Tech VT-ARC forms multi-disciplinary teams to apply innovative solutions to the real-world problems that strain our social political industrial and economic foundations.

To learn more about VT-ARCs Benefits Perks Culture & more visit our Careers page: Tech Applied Research Corporation is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race color religion sex sexual orientation gender identity national origin age disability veteran status or any other status protected by law. As a federal contractor we are committed to providing equal employment opportunity and affirmative action for qualified individuals with disabilities under Section503 of the Rehabilitation Act of 1973. If you need a reasonable accommodation to complete the application or interview process please contact Human Resources at

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