Red Team Network Engineer

Millennium Corporation; Baltimore (MD); On-site; USD 150,000 - 170,000; Full time

Job summary

Millennium Corporation in Baltimore, MD seeks a Red Team Network Engineer with an active secret clearance and TS/SCI eligibility to support secure cyber range networks for adversary emulation and training. The role demands designing and maintaining scalable Layer 2/3 networks, virtualization integration, and strong collaboration with government stakeholders.

Responsibilities include implementing secure network infrastructure, configuring firewalls, and producing comprehensive documentation.

Qualifications

• Active secret clearance with TS/SCI eligibility required.
• Bachelor's degree in related field or equivalent experience.
• 8+ years designing enterprise network infrastructure.

Responsibilities

• Design, implement, and sustain a secure cyber range network for Red Team operations.
• Architect Layer 2/3 networks with segmentation and high-performance services.
• Install, integrate, and manage virtualization, storage, and compute platforms.
• Maintain documentation, diagrams, and procedures for operational readiness.
• Collaborate with stakeholders to enhance cyber range capabilities.

Skills

Active clearance

TS/SCI eligibility

Networking design

Technical leadership

Team coordination

Education

Bachelor's degree in CS/IT/Engineering

Tools

Cisco enterprise switching

VMware

Proxmox

Hyper-V

KVM

pfSense/OPNsense

Active Directory

DNS

Windows Server

Linux

Docker

Kubernetes

Ansible

Terraform

Git

Python

PowerShell

Job description

Overview

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.Since 2004, 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.

What We Believe

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.

Responsibilities

Millennium Corporation is hiring a Red Team Network Engineer to work in Baltimore, MD. ALL candidates MUST have an active secret clearance with TS/SCI eligibility to qualify for consideration.

Responsibilities:

• Design, implement, and sustain a secure, scalable cyber range network supporting Red Team operations, adversary emulation, penetration testing, malware analysis, cyber research, and operator training.
• Architect and deploy isolated Layer 2/Layer 3 network infrastructure, including routing, switching, VLANs, segmentation, IP addressing, and high-performance network services.
• Install, configure, and integrate enterprise networking, compute, virtualization, and storage platforms into a mission-ready cyber range environment.
• Implement secure network segmentation, firewalls, access controls, and management boundaries to protect operational environments and ensure isolation from external networks.
• Configure and optimize virtualized infrastructure, storage connectivity, and shared services to support resource-intensive cyber operations and concurrent training environments.
• Perform infrastructure integration, validation, troubleshooting, and performance optimization to ensure high availability, resiliency, interoperability, and operational readiness.
• Develop and maintain comprehensive network diagrams, architecture documentation, configuration baselines, installation procedures, and operational support documentation.
• Conduct infrastructure testing and acceptance activities, verifying compliance with technical, security, and government requirements while resolving identified deficiencies.
• Collaborate with system administrators, cybersecurity engineers, software developers, cyber operators, and government stakeholders to enhance cyber range capabilities and support mission objectives.
• Provide technical leadership by recommending infrastructure improvements, supporting future expansion and capacity planning, mentoring junior engineers, and ensuring delivery of a maintainable, mission-ready cyber range.

Qualifications

• ALL candidates MUST have an active secret clearance with TS/SCI eligibility to qualify for consideration.
• Bachelor's degree in Computer Science, Information Technology, Engineering, or related discipline (or equivalent experience).
• 8+ years designing enterprise network infrastructure.
• Experience designing isolated laboratory or cyber range environments.
• Strong Layer 2/Layer 3 networking experience.
• Experience with Cisco enterprise switching.
• Experience implementing VLANs, STP, LACP, routing, and ACLs.
• Experience configuring enterprise firewalls.
• Experience deploying fiber infrastructure.
• Experience integrating enterprise storage.
• Experience with virtualization networking.
• Experience producing technical documentation.

Desired -

• Experience with VMware, Proxmox, Hyper-V, or KVM.
• Experience with pfSense or OPNsense.
• Experience with Active Directory, DNS, DHCP, Windows Server, and Linux.
• Experience with Docker, Kubernetes, Ansible, Terraform, Git, Python, or PowerShell.
• Experience with DISA STIGs, RMF, and NIST 800-53.
• Experience supporting Red Team infrastructure, adversary emulation, malware analysis, or MITRE ATT&CK.

Business Development

Assist with Business Development activities as required to support Millennium's strategic business objectives, which may include but not limited to participation in technical interviews, creation of technical documentation, general proposal writing support and proposal color reviews.

Physical Requirements

• 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.

COMPENSATION:

$150k-$170k

The salary range provided for this position is intended as a general guideline and does not guarantee a specific salary or compensation amount. Final compensation will be determined based on a variety of factors, including, relevant education, experience, knowledge, skills, and abilities.