Millennium Corporation · 1 hour ago
Principal Cyber Engineer/ Advanced Cyber Operator (Cyber Assessment Program)
US
Full-time
Onsite
Lead/Staff
8+ years expMillennium Corporation is part of the Markon Solutions family, specializing in cybersecurity to support national security missions. They are seeking a Principal Cyber Engineer/ Advanced Cyber Operator to conduct advanced adversarial emulation and penetration testing, providing expert-level security engineering guidance to Government stakeholders.
ConsultingCyber SecurityInformation Technology
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Execute Red Team and adversarial emulation engagements from planning through reporting using real-world threat TTPs
Conduct penetration testing against applications, networks, operating systems, and cloud environments
Perform OSINT, vulnerability discovery, exploitation, lateral movement, persistence, and command-and-control operations
Develop payloads, scripts, and tools for exploitation, evasion, and post-exploitation activities
Safely employ attacker TTPs in sensitive environments in accordance with Standing Ground Rules and policies
Evade defensive controls (e.g., EDR, AV, behavioral detection systems) to meet engagement objectives
Emulate Advanced Persistent Threat (APT) actors using MITRE ATT&CK–aligned methodologies
Rapidly develop domain-specific tools and scripts in high-tempo environments
Research emerging threats, exploitation techniques, and vulnerabilities
Design and configure representative test environments
Build innovative accelerators and frameworks to improve Red Team velocity and scalability
Analyze applications and systems to identify design and implementation flaws
Perform source code review, reverse engineering, and exploit research
Develop security testing strategies to assess effectiveness of controls
Provide remediation recommendations and risk mitigation strategies
Demonstrate findings and collaborate with Blue Teams to improve detection
Document exploitation activities and vulnerabilities clearly and accurately
Produce technical and executive-level reports and briefings
Communicate engagement objectives, risks, and results to technical and non-technical audiences
Support training events, exercises, and demonstrations
Provide subject matter expertise to Government personnel
Collaborate with cross-functional security teams
Support compliance with Red Team policies and accreditation requirements
Assist with business development activities including: Technical interviews, Proposal support, Technical documentation, Color team reviews
Qualification
Required
Active TS/SCI Clearance
Bachelor's degree in Computer Science, Engineering, Cybersecurity, or related technical discipline (or equivalent experience)
8–10+ years of practical offensive cyber or Red Team experience
One or more of the following certs are required: OSCP, OSCE/3, GXPN
Preferred
Master's degree in Cybersecurity or Computer Science
10+ years supporting DoD OCO or DCO missions
Experience supporting TSMO, NSA, Air Force or Navy Red Teams
Expertise in one or more: Active Directory, Software Development, Incident Response, Cloud Infrastructure
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
Company
Millennium Corporation
Millennium Corporation is a cybersecurity company on the cutting edge.
201-500 employees
Funding
Current Stage
Growth StageLeadership Team
Ben Clark
Chief Technology Officer
Ryan Hill, CPA
Chief Financial Officer
Recent News
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2025-03-22
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