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Systems Engineer II with Security Clearance

Millennium CorporationHanscom AFB, MA🇺🇸United StatesPosted 17 Aug 2026

Why This Role Stands Out

If you're a skilled Systems Engineer with an active Top Secret clearance and SCI eligibility, this on-site role at Millennium Corporation offers an excellent opportunity to contribute to critical national security missions and advance your career in cybersecurity. You'll be instrumental in the full acquisition lifecycle, leveraging your expertise in MBSE and contributing to vital architecture definition efforts within a reputable organization known for its cutting-edge work. This position is ideal for someone seeking impactful projects and professional growth within a leading cybersecurity firm.

Quick Overview

Salary
$115k - $123k/yr
Work Type
On Site
Schedule
Employee
Level
Mid Senior

Job Description

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. Since 2004, 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 Corporation is hiring a Systems Engineer II to work at Hanscom AFB in a full-tme, on site capacity. ALL candidates MUST have an active Top Secret clearance with SCI eligibility to qualify for consideration.

  • Provide systems engineering support throughout the acquisition lifecycle, including requirements analysis, system design, integration, sustainment, and disposal activities.
  • Must have experience and knowledge in Model Based Systems Engineering (MBSE).
  • Support Mission Integration Team (MIT) activities by translating operational and functional requirements into technical requirements.
  • Participate in architecture definition efforts to ensure integration and interoperability across the DAF C3BM enterprise architecture.
  • Review current DoD architecture models and support development of future-state architectures that enable sensor-to-shooter connectivity.
  • Support risk assessments and collaborate with stakeholders to identify and mitigate technical and programmatic risks.
  • Assist in developing execution management strategies and transition capability requirements to the acquisition community.
  • Support development of test and evaluation strategies in coordination with acquisition and test organizations.
  • Drive interoperability and integration efforts across Program Executive Offices (PEOs) and weapon systems.
  • Capture and analyze current and future operational architectures based on mission and engagement scenarios.
  • Engage with joint and coalition stakeholders to support development of integrated multi-domain architectures.
  • Support identification, assessment, and maturation of innovative concepts through analysis, modeling, simulation, and systems engineering activities.
  • Prepare and support technical briefings, engineering documentation, reports, and recommendations for Government leadership. Qualifications ALL candidates MUST have an active Top Secret clearance to qualify for consideration. Technical Skills
  • Bachelor's or Master's Degree in a related field and 3+ years of experience and within the DoD sector
  • Systems Engineering across the acquisition lifecycle
  • Systems Architecture and Integration
  • Requirements Analysis and Development
  • Mission Integration and System-of-Systems Engineering
  • Operational Analysis and Architecture Development
  • Cloud-based systems, including management and projection of cost and performance
  • Agile methodologies, CI/CD, DevSecOps, and DevOps principles
  • Knowledge of systems acquisition and program management processes as defined in DoDI 5000.02 and DoDI 5000.75
  • Modeling, Simulation, and Analysis
  • Technical Documentation and Brief Development
Interpersonal Skills
  • Self-starter with the ability to work independently and solve complex problems with minimal oversight
  • Strong analytical and critical thinking skills
  • Strong written and verbal communication skills
  • Ability to collaborate effectively across Government, contractor, joint, and coalition organizations
  • Ability to communicate technical concepts to senior leadership and stakeholders
  • Strong organizational and problem-solving abilities 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. 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 5% COMPENSATION: $115,000-$123,000 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.

Skills

Agile

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