Red Team Network Engineer

Millennium; Baltimore (MD); On-site; USD 120,000 - 180,000; Full time

Job summary

Millennium Corporation in Baltimore, MD seeks a Red Team Network Engineer to design, implement, and sustain a secure cyber range network supporting adversary emulation and red team operations. An active secret clearance with TS/SCI eligibility is required.

The role involves deploying isolated Layer 2/3 networks, configuring VLANs, firewalls, and storage integration, and coordinating with government stakeholders for mission objectives.

Qualifications

• Active secret clearance with TS/SCI eligibility is mandatory.
• Bachelor's degree or equivalent experience.
• Experience designing isolated 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 integrating enterprise storage.
• Experience with virtualization networking.
• Experience producing technical documentation.

Responsibilities

• Design, implement, and sustain a secure, scalable cyber range network for red team operations.
• Architect and deploy isolated Layer 2/Layer 3 networks with VLANs and high-performance services.
• Install, configure, and integrate enterprise networking, compute, and virtualization platforms.
• Implement secure segmentation, firewalls, and access controls.
• Configure virtualized infrastructure and storage connectivity for cyber operations.
• Develop network diagrams, docs, baselines, and procedures.
• Collaborate with admins, engineers, and stakeholders to enhance range capabilities.
• Provide technical leadership and mentorship for junior engineers.

Skills

Layer 2 networking

Layer 3 networking

Security clearance TS/SCI

Technical documentation

Cyber range design

Education

Bachelor's degree or equivalent experience

Tools

Cisco enterprise switching

Firewall configuration

Storage integration

Job description

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).
• 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 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.