Facility Security Officer – Millennium Space Systems

About the Position

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Millennium Space Systems, a part of Boeing Defense, Space and Security (BDS), is a fast, agile small satellite company focused on national security space. Our missions have a direct impact on global security, such as missile warning and Earth observation.

We are seeking a Facility Security Officer who will oversee the operations of classified facilities and ensure the implementation of operative security controls intended for the protection of unclassified and classified national security information (NSI) developed by or entrusted to MSS as a member of the National Industrial Security Program (NISP). This is an onsite role in El Segundo, California.

Responsibilities

• Administer day-to-day security operations of the Industrial Security program with support from corporate management, implementing a security program that enables the business while complying with Government regulations.
• Conduct security self-inspections, apply risk mitigation methodologies, support government customer assessments, and implement security measures to meet requirements.
• Develop, maintain, and update company policies and procedures according to 32 CFR Part 117 (NISPOM), DD254s, and contract requirements.
• Maintain facility clearance status in NISS and work with DCSA on required program and personnel documentation (KMP, self-inspections, SEAD 3 Reporting, etc.).
• Manage Physical Security of multiple local facilities in compliance with DCSA and ICD 705 requirements.
• Assist with the Personnel Security program and administer security clearances/access processes for new/existing employees, subcontractors, and consultants.
• Maintain hard/soft copies of DD Form 254 along with personnel assigned to contract prior to indoctrination. Ensure DD Form 254s properly executed and proper DD 254 tracking.
• Update Millennium Space Systems Standard Practices and Procedures (SPP) artifact, as necessary.
• Assume the role of Insider Threat Program Senior Official (ITPSO), leading the Insider Threat Team in collaboration with key stakeholders.
• Craft, provide, and track security trainings and briefings for all cleared and uncleared personnel IAW 32 CFR Part 117.

Requirements

• Basic Qualifications (Required Skills/Experience):

  • Ability to obtain a U.S. Security Clearance for which the U.S. Government requires U.S. Citizenship. Must have an active U.S. Top Secret Security Clearance with SCI eligibility.
  • Minimum of 8 years of experience performing responsibilities in a Collateral, SAP or SCI environment, preferably as an appointed FSO or AFSO.
  • Experience as a certified FSO.
  • Experience with implementation of a security program that enables the business while complying with Government regulations.
  • Thorough working knowledge of the NISPOM, ICDs, associated Executive Orders, and Security Executive Agent Directives (SEADs).

• Preferred Qualifications (Desired Skills/Experience):

  • Bachelor's Degree.
  • Professional experience conducting industrial security operations for the US DoD or US Intelligence Community.
  • Knowledge of OPSEC procedures and application of OPSEC to Sensitive Government information (FOUO, CUI).
  • Significant experience with DISS/NBIS, NISS, SWFT, eQIP/eAPP.
  • Completion of STEPP Facility Security Officer Program Management for Possessing Facilities training.
  • Relevant professional memberships (NCMS, ISWG, etc.).
  • Experience implementing and utilizing SIMS software.
  • Experience with supporting special access programs for various Government agencies.
  • Professional experience as a CSSO or CPSO.
  • Experience interfacing with corporate and government leadership.

We Offer

• Competitive base pay and variable compensation opportunities.
• Opportunity to enroll in a variety of benefit programs, generally including health insurance, flexible spending accounts, health savings accounts, retirement savings plans, life and disability insurance programs, and a number of programs that provide for both paid and unpaid time away from work.

About the Company

At Millennium Space Systems, a Boeing Company, we strive to deliver a Total Rewards package that will attract, engage, and retain the top talent. We are committed to environmental stewardship and an important pillar of our broader sustainability strategy to help make the world better for future generations.

Application Details

• Location: El Segundo, California; Los Angeles, California
• Job ID: JR2026521413
• Category: Security & Fire Protection Services
• Role Type: Onsite
• Post Date: Aug. 20, 2026
• Application Deadline: Sept. 04, 2026

Note: Successful candidates for this job must satisfy the Company’s Conflict of Interest (COI) assessment process. Millennium Space Systems, a Boeing Company, is a Drug Free Workplace (DFW) where post offer applicants and employees are subject to testing for marijuana, cocaine, opioids, amphetamines, PCP, and alcohol when criteria is met as outlined in our policies.

Equal Opportunity Employer: Boeing is an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status, or other characteristics protected by law.