Millennium Corporation

Oct 16, 2026

Red Team Security Engineer II

United States

Huntsville, Alabama, United States

PythonNode.jsRuby

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.For

more than two decades, 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 is hiring Red Team Security Engineer II in Huntsville, AL. Candidate must have an active Secret Clearance with eligibility to obtain a Top Secret/SCI Clearance.

The Red Team Security Engineer will conduct multiple penetration tests of global customer networks, rapid development of domain or problem-specific tools that leverage identified vulnerabilities, research on the latest exploitation techniques and threat vectors, and design and configuration of representative test environments.

Candidate must support various training events, conferences, exercises, and demonstrations to ensure continued compliance with team member certification requirements to enhance technical capabilities, and to support authorized missions and test events.

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.

Qualifications

Must have an active Secret Clearance with eligibility to obtain a Top Secret/SCI Clearance

Bachelor’s degree from an accredited college or university in computer science, information systems, engineering, scientific or a mathematics-intensive discipline or a Relevant Technical Discipline. At least 3-5 years of practical experience required. Two years of relevant experience with an Associate’s degree will be considered the equivalent of a Bachelor’s degree. Four years of relevant experience will be considered equivalent to a Bachelor’s degree.

Must have a CEH & CISSP Certification upon hire

SPECIALIZED experience in Red Teaming, Computer Network Attack (CNA), Computer Network Exploitation (CNE), Computer Network Defense (CND), and/or penetration testing

Ability to independently and rapidly develop tools and scripts from concept to production in a high-stress, short deadline, under-resourced environment using multiple programming languages

Additional Requirements

Experience with at least one of the following scripting languages (PowerShell, Bash, Python, Ruby, Node.js)

Experience performing web application security assessments

Experience with TCP/IP protocols as it relates to network security

Experience with offensive tool sets including: Kali Linux, Metasploit, CobaltStrike, Intercepting Proxies, etc.

Experience in using network protocol analyzers and sniffers, as well as ability to decipher packet captures

Excellent independent (self-motivational, organizational, personal project management) skills

Proven ability to work effectively with management, staff, vendors, and external consultants

Ability to think outside the box and emulate adversarial approaches

Capable of conducting penetration tests on applications, systems and network utilizing proven/formal processes and industry standards.

Capable of managing multiple penetration test engagements, from cradle to grave, at the same time

In depth understanding of emerging threats, vulnerabilities, and exploits

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.

Travel Requirements

15-30% (or less) travel as required by the program.

COMPENSATION

$135,000 - 141,000

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

Languages

Red Team Security Engineer II

Overview

What We Believe

Responsibilities

Business Development

Qualifications

Additional Requirements

Physical Requirements

Travel Requirements

COMPENSATION

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