Senior Red Team Engineer — Top Secret Cleared

Millennium; Charleston (SC); On-site; USD 120,000 - 146,000; Full time

Job summary

Millennium Corporation seeks a skilled Red Team Security Engineer to join our cybersecurity team in Charleston, SC. The role focuses on offensive security, conducting penetration tests, developing tooling, and emulating advanced adversary TTPs across enterprise environments.

The candidate will design test environments, manage engagements from planning to remediation, and collaborate with internal teams to communicate risks and mitigations.

Qualifications

• Active Top Secret Clearance required.
• Bachelor's degree in Cybersecurity, Computer Science, Engineering, Mathematics, or a related technical field.
• 1+ year hands-on penetration testing experience.
• 3+ years in software development, systems engineering, or computer networking.
• Proficiency with Python, PowerShell, and Bash scripting.
• Experience with web app security assessments, TCP/IP networking, packet analysis, and offensive security tools (Kali Linux, Cobalt Strike).
• Understanding of Red Team C2, evolving threats, vulnerabilities, and exploitation techniques.
• Strong analytical, organizational, and communication skills; able to manage engagements end-to-end.

Responsibilities

• Conduct penetration testing engagements against enterprise applications, systems, and global networks.
• Perform Red Team operations emulating sophisticated adversary TTPs.
• Develop and maintain custom tools, scripts, and payloads (Python/PowerShell/Bash).
• Design, configure, and maintain test environments for offensive security assessments.
• Manage penetration testing engagements from planning through reporting and remediation.
• Analyze network traffic, packet captures, and system behavior with security tools.
• Utilize Kali Linux, Cobalt Strike, and other standard frameworks.
• Communicate findings, risks, and mitigations to internal teams.
• Participate in training and conferences to stay current on threats.
• Assist with business development tasks such as technical interviews and proposal support.

Skills

Penetration testing

Python scripting

PowerShell

Bash

Communication

Independent work

Education

Bachelor's degree in Cybersecurity, Computer Science, Engineering, or Mathematics

Tools

Kali Linux

Cobalt Strike

Wireshark

Job description

Millennium Corporation seeks a skilled Red Team Security Engineer to join our cybersecurity team in Charleston, SC. The role focuses on offensive security, conducting penetration tests, developing tooling, and emulating advanced adversary TTPs across enterprise environments.

The candidate will design test environments, manage engagements from planning to remediation, and collaborate with internal teams to communicate risks and mitigations.