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Millennium Corporation · 1 month ago

Senior Network Engineer III

US-SC-Charleston

Full-time

Onsite

Senior Level

7+ years exp

Millennium Corporation is a leader in cybersecurity, operating for two decades with a team of over 300 experts. They are hiring a Senior Network Engineer III to design and maintain secure network infrastructures for Marine Corps IT systems, ensuring optimal performance and compliance with cybersecurity requirements.

ConsultingCyber SecurityInformation Technology

Growth Opportunities

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Design, implement, and maintain secure and resilient network infrastructures supporting Marine Corps Information Technology (IT) systems under NIWC Atlantic’s Expeditionary Enterprise Systems and Services (E2S2) Division

Configure, manage, and optimize network technologies, including Cisco SD-WAN, BGP, DMVPN/FlexVPN, HAIPE, and Multicast routing protocols

Support the integration of diverse network operating systems, hardware devices, and enterprise/tactical applications to ensure interoperability and mission readiness

Conduct network performance monitoring, troubleshooting, and capacity planning to ensure optimal uptime and reliability across environments

Develop and maintain network architecture documentation, configuration baselines, and implementation guides in compliance with DoD and NIWC standards

Collaborate with cross-functional engineering teams to design hybrid software, web, and hardware solutions from concept through deployment and sustainment

Ensure adherence to cybersecurity and information assurance requirements, supporting accreditation and risk management processes

Provide technical leadership and mentorship to junior engineers and support personnel, promoting knowledge sharing and best practices

Assist in project planning and execution, including defining scope, estimating costs, managing schedules, and addressing technical or operational challenges

Coordinate with external vendors and carriers (e.g., Verizon) to support connectivity, performance, and service-level agreements

Participate in regular engineering sync sessions and stakeholder reviews to report status, resolve issues, and align deliverables with mission objectives

Travel as required (up to 45 days annually) to support field installations, testing, and site sustainment

Qualification

Cisco SD-WANBGPDMVPN/FlexVPNHAIPEMulticast technologiesNetwork performance monitoringNetwork architecture documentationCybersecurity complianceProfessional certificationProject planningBusiness Development supportTechnical leadershipCross-functional collaboration

Required

Active Top Secret Clearance required

7+ years of IT/network engineering experience

Hands-on experience with Marine Corps networks (enterprise and/or tactical environments)

Proficiency in Cisco SD-WAN, BGP, DMVPN/FlexVPN, HAIPE devices, and Multicast technologies

Demonstrated ability to integrate diverse network operating systems, applications, and hardware across the full system lifecycle (design, coding, testing, and maintenance)

Must obtain a professional or platform-specific certification within 12 months, such as: CCNP, CCDP, VCP, OCP, RHCP, or Microsoft role-based certifications (e.g., MCAD, MCDBA). Equivalent cloud or software engineering certifications may be accepted with COR approval

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