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Millennium Tech Stack

DoD cybersecurity and red team operations with federal engineering scope

Information Technology & Services Arlington, VA 201–500 employees Privately Held

Millennium operates across red team, defensive cyber, and software engineering for DoD and federal civilian agencies. The stack spans offensive tools (Kali, Burp, Metasploit, MITRE ATT&CK) and defensive/compliance frameworks (NIST, ISO 27001, COBIT), reflecting dual-track operations. Current hiring skews heavily toward engineering (9 of 15 roles) with senior-level dominance (8 of 14 technical hires), suggesting active scaling of delivery capacity on complex DoD programs alongside cloud environment maturation challenges.

Tech Stack 35 technologies

Core StackC++ Java Python Rust Kotlin C# Linux Intune AWS Kali Linux Burp Suite Metasploit MITRE ATT&CK Nessus Nmap Tenable Kali NIST ISO/IEC 27001 COBIT PowerPoint Excel Word C Assembly Android Outlook Adobe Acrobat macOS Azure+5 more

What Millennium Is Building

◆Challenges

Validating defensive posture
Identifying exploitable attack paths
Identifying and eliminating fire hazards
Ensuring compliance with fire protection codes
Resolving fire protection issues
Maintenance of amphibious combat vehicles
Sustainment issues and technical risks
Managing complex do d engineering program
Maturation of cloud environment
Secure transport integration

▲Active Projects

Adversary-based simulations on critical systems
New embassy campus
Major rehabilitation projects
New construction and renovation compliance
Fire protection system design and construction
Fire investigation coordination
New exploitation techniques development
Intelligence source research
Inspect and repair only as necessary (iroan) of amphibious combat vehicles
Engineering change proposal (ecp) reviews

Hiring Activity

Accelerating15 roles · 15 in 30d

Department

Engineering

9

Security

4

Finance

1

Seniority

Senior

8

Mid

5

Principal

1

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About Millennium

Millennium provides full-spectrum cybersecurity services to the Department of Defense and federal civilian agencies. The company operates contracted red team operations, defensive cyber operations, software engineering, and technical engineering capabilities. Founded in 2004, it maintains approximately 400+ experts across these domains. The service portfolio spans threat intelligence, adversary simulation, exploitation technique development, and compliance/engineering support for DoD programs. Active projects include adversary-based simulations on critical infrastructure, security posture validation work, and DoD engineering program execution (including vehicle maintenance and construction compliance oversight).

HeadquartersArlington, VA

Company Size201–500 employees

Hiring MarketsUnited States, Nigeria

Frequently Asked Questions

What is Millennium's cybersecurity focus area?

Red team operations, defensive cyber operations, software engineering, and technical engineering for DoD and federal civilian customers. The company operates the largest contingent of contracted DoD red team operators.

What cybersecurity tools does Millennium use?

Offensive tools: Kali Linux, Burp Suite, Metasploit, NMAP. Defensive/compliance: NIST, ISO/IEC 27001, COBIT, Tenable Nessus. Development languages: C, C++, Java, Python, Rust, C#.