Red Team Security Engineer

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 advanced adversaries, developing custom tools, and conducting complex penetration testing in enterprise environments, we'd love to talk with you.

The Red Team Security Engineer IV will:

• Conduct Red Team assessments and penetration testing against enterprise networks, applications, and systems.
• Research emerging vulnerabilities, exploitation techniques, and threat vectors.
• 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.

Qualifications

• Active Top Secret Clearance with the ability to obtain SCI eligibility
• Bachelor's degree in Computer Science, Cybersecurity, Engineering, Mathematics, Information Systems, or related technical discipline (experience may be substituted for education)
• 8–10+ years of experience in offensive cybersecurity
• CEH and CISSP certifications required upon hire
• Experience in one or more of the following:
• Red Team Operations
• Computer Network Defense (CND)
• Advanced Penetration Testing
• Experience developing tools and automation using scripting languages such as PowerShell, Python, Bash, Ruby, or Node.js
• Experience performing web application security assessments
• Strong understanding of TCP/IP networking and network security
• Experience with offensive security tools including Kali Linux, Metasploit, Cobalt Strike, Burp Suite/intercepting proxies, and packet analysis tools
• Ability to rapidly develop solutions in fast-paced operational environments

Preferred Qualifications:

• NSA Remote Interactive Operator Apprentice Certificate or DoD Red Team Journeyman (Level II) certification
• Physical Security training or experience
• Strong knowledge of emerging threats, exploits, and attacker methodologies
• Ability to think like an adversary and solve complex technical challenges independently