Red Team Security Engineer IV — Offensive Cyber Expert

Millennium; Huntsville (AL); On-site; USD 130,000 - 190,000; Full time

Job summary

Millennium is seeking an experienced Red Team Security Engineer IV to join our offensive cybersecurity team supporting high-impact national security missions in Huntsville, AL. If you enjoy emulating adversaries, developing custom tools, and conducting complex penetration testing in enterprise environments, we'd love to talk with you.

This role requires clear communication, strong problem solving, and the ability to operate in a fast-paced, mission-driven setting.

Qualifications

• Active Top Secret Clearance with SCI eligibility.
• Bachelor's degree in a related technical discipline; education may be substituted by experience.
• 8–10+ years of offensive cybersecurity experience.
• Certifications required upon hire: CEH and CISSP.
• Experience in Red Team Operations, CND, and advanced pentesting.
• Experience developing tools and automation using scripting languages (PowerShell, Python, Bash, Ruby, Node.js).
• Experience performing web application security assessments; strong TCP/IP networking knowledge.
• Experience with offensive security tools: Kali Linux, Metasploit, Cobalt Strike, Burp Suite, and packet analysis.

Responsibilities

• Conduct Red Team assessments and penetration testing against enterprise networks, applications, and systems.
• Research emerging vulnerabilities and exploitation techniques.
• Develop custom tools and scripts to support offensive cyber operations.
• Design, configure, and maintain representative testing environments.
• Support cyber exercises, training events, demonstrations, and mission activities.
• Manage multiple penetration testing engagements from planning through reporting.
• Collaborate with technical teams to identify security risks and improve defensive capabilities.

Skills

Offensive cybersecurity

PowerShell

Python

Bash

Ruby

Node.js

Web app security testing

TCP/IP networking

Packet analysis

Kali Linux

Metasploit

Cobalt Strike

Burp Suite

Education

Bachelor's degree in Computer Science, Cybersecurity, Engineering, Mathematics, Information Systems, or related technical discipline

Tools

Kali Linux

Metasploit

Burp Suite

Cobalt Strike

Job description

Millennium is seeking an experienced Red Team Security Engineer IV to join our offensive cybersecurity team supporting high-impact national security missions in Huntsville, AL. If you enjoy emulating adversaries, developing custom tools, and conducting complex penetration testing in enterprise environments, we'd love to talk with you.

This role requires clear communication, strong problem solving, and the ability to operate in a fast-paced, mission-driven setting.