Industrial Security Specialist

About the role

Muon Space seeks a Industrial Security Specialist / Assistant Facility Security Officer (AFSO) to join our Security team, reporting to the Senior Security Manager. The ideal candidate is a hands-on individual contributor who thrives in a fast-paced, mission-driven environment and brings deep technical expertise across the full spectrum of industrial security disciplines. This person will execute day-to-day security operations in support of DoD and IC programs, serve as a subject matter expert for personnel, physical, and program security, and partner closely with program teams to ensure compliance with 32 CFR Part 117 (NISPOM) and applicable Intelligence Community Directives (ICDs). This person will play a key role in maintaining our facility clearance, protecting classified programs, and enabling Muon's mission to deliver Earth Intelligence for a safer, more resilient world.

This position is fully onsite and requires working in our Mountain View, CA office five days a week.

Responsibilities

• Execute day-to-day Assistant Facility Security Officer (AFSO) duties in support of our DoD Facility Clearance, including personnel security actions, visit requests, and interfacing with DCSA and USG customers.
• Administer the personnel security program — process clearance actions in DISS, conduct initial and refresher security briefings/debriefings, and maintain accurate personnel security records.
• Support Program Protection activities, including implementation of security requirements for secure payload processing, operations facilities, and program infrastructure.
• Contribute to the Insider Threat Program, including monitoring, reporting, and supporting investigations under the direction of the Insider Threat Program Senior Official.
• Deliver the security education and training program, including initial indoctrinations, annual refreshers, foreign travel briefings, and topic-specific training (OPSEC, CI awareness, derivative classification, etc.).
• Draft, maintain, and enforce Standard Practice Procedures (SPPs), Emergency Action Plans, and program-specific security guidance covering classified information, CUI, and proprietary materials.
• Review and track DD-254s for classified contracts and subcontracts, ensuring flow-down requirements are correctly implemented and maintained.
• Support the self-inspection program and prepare for DCSA security reviews and assessments.
• Operate and maintain the facility badging system, physical access controls, alarm systems, and visitor management processes.
• Support COMSEC accountability and safeguarding activities as needed, in coordination with the designated COMSEC custodian.