Network Engineer - Tysons, VA

Overview

About M.C. Dean M.C. Dean is Building Intelligence®. We design, build, operate, and maintain cyber‑physical solutions for the nation’s most mission‑critical facilities, secure environments, complex infrastructure, and global enterprises. With over 9,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and innovative power and technology solutions through engineering expertise and smart systems integration.

Why Join Us? Our people are passionate about engineering innovation that improves lives and drives impactful change. Guided by our core values—agility, expertise, and trust—we foster a collaborative and forward‑thinking work environment. At M.C. Dean, we are committed to building the next generation of technical leaders in electrical, engineering, and cybersecurity industries.

We rely on a secure, resilient enterprise network to support critical business functions across M.C. Dean and to enable delivery for our customers worldwide. The successful candidate will join a dynamic, multidiscipline team responsible for the operation, implementation, and sustainment of M.C. Dean’s enterprise network infrastructure spanning headquarters, regional offices, lab environments, and secure enclaves. This role is the network analog to our developer‑platform Systems Engineer role and is focused on day‑to‑day operations, change implementation, and lifecycle support of deployed systems—working under the direction of senior network engineers and architects.

As part of the team, the Network Engineer’s responsibilities will include (but will not be limited to) the following:

• Implement approved network changes—switching, routing, wireless, firewall, SD‑WAN, VPN, and cloud networking—following established designs, configuration baselines, and change‑management procedures.
• Perform routine operations on the enterprise network and supporting controls, including monitoring service health and performance, responding to alerts, and triaging incidents.
• Sustain deployed systems through patching, firmware updates, certificate rotation, configuration backups, and capacity tracking; identify and remediate vulnerabilities flagged through scanning and audit processes.
• Troubleshoot common network and connectivity problems across LAN, WAN, wireless, VPN, and cloud paths; elevate complex issues to senior engineers with clear problem statements and supporting data.
• Support implementation of network changes for regulated environments—including the CUI enclave—under the direction of senior engineers and in accordance with applicable controls.
• Coordinate with Internet service and carrier providers on routine service requests, including moves/adds/changes, copper/fiber identification, and demarcation issues.
• Support delivery of customer‑program connectivity (such as transit, rail, and other project sites), including configuration of project‑side network and security components in coordination with project engineers.
• Contribute to lab and proof‑of‑concept work, including SD‑WAN, wireless, and security pilots; help productize successful pilots into operational standards.
• Create and maintain accurate network documentation, including configuration baselines, runbooks, port maps, and diagrams—keeping them current as the environment changes.
• Provide escalation support to the helpdesk for network‑related issues; contribute to knowledge‑base articles and training materials.

Specific qualification requirements for the position include the following:

• Routing, Switching & Wireless: Hands‑on experience configuring, supporting, and operating Cisco campus and data‑center switching, routing (OSPF, BGP fundamentals), and enterprise wireless (Cisco Wireless or comparable); familiarity with Cisco Catalyst Center or equivalent management platform.
• SD‑WAN & WAN: Working knowledge of Cisco SD‑WAN (or comparable) and WAN concepts; able to perform routine operations and supervised implementation tasks under senior direction.
• Firewall Operations: Hands‑on…