Millennium is proud to be part of the Markon enterprise, a network of specialized organizations united in support of critical national security missions. This partnership strengthens our ability to deliver results by expanding our technical depth, operational reach, and access to a broader bench of proven experts, ensuring our customers continue to receive best-in-class cybersecurity support.

For more than two decades, Millennium has operated at the forefront of cybersecurity. Our elite team of over 300 professionals brings an unmatched record of performance across Red Team Operations, Defensive Cyber Operations, Software Engineering, and Technical Engineering. As home to the largest contingent of contracted Red Team operators supporting the Department of Defense, Millennium delivers unparalleled threat intelligence and battle-tested expertise to both DoD and federal civilian customers.

Millennium is an equal opportunity employer and does not discriminate or allow discrimination on the basis of race, color, religion, gender, age, national origin, citizenship, disability, veteran status or any other classification protected by federal, state, or local law.

Millennium is seeking a Network Architect to work in Charleston, SC. The Network Architect will design, implement, and support secure MAN/WAN network infrastructures while serving as a technical lead and escalation point.The candidate must have an active Top secret clearance.

Key Responsibilities:

• Gather and clarify customer requirements and translate them into network designs

• Design, implement, test, and support LAN/WAN and MAN/WAN environments

• Provide Tier IV escalation support for USMC Enterprise WAN infrastructure

• Configure and support Cisco routers, switches, and firewalls

• Troubleshoot complex network issues, including MPLS, latency, and connectivity in secure environments

• Perform root cause analysis and recommend performance improvements

• Lead network testing, monitoring, tuning, and performance analysis

• Coordinate with vendors during outages or degraded performance

• Mentor junior team members and provide technical guidance

• Develop documentation, standards, site analyses, and implementation plans

• Research and recommend new network technologies and tools

• Provide client consulting, training, and internal technical support

• Active Top Secret Level Clearance
• Bachelor’s degree in electrical/Electronic/Computer Engineering, Computer Science, or Information Systems (BS, BA, or Associate of Science (AS) shall be from an Accreditation Board for Engineering and Technology (ABET) accredited program.)
• Minimum of 10 years of network architect experience of WAN network, and concepts of a wide area network, designing LAN/WAN's and network engineering.

• Advanced experience with Cisco routing and switching (CCNP-level or higher), including ASR and 1900–7600 series routers

• Strong IP networking skills, including subnetting and routing protocols (BGP, EIGRP, OSPF)

• Experience with Cisco NGFWs, F5 Load Balancers, DMVPN, VRF, SD-WAN, and Riverbed WAN optimization

• Proficiency using network monitoring and performance tools (e.g., Cisco Prime, Riverbed SteelCentral, NetScout, Gigamon)

• CCIE certification strongly preferred

• Experience supporting Marine Corps enterprise networks and cyberspace environments

• Familiarity with Navy and Marine Corps systems engineering processes

• Must be comfortable with prolonged periods of sitting at a desk and working on a computer.
• Must be able to lift up to 10-15 pounds at a time.

Available to Travel up to 20 days per year