Senior COMSEC Manager — Secure Communications & Compliance

Castelion Corporation; Torrance (CA); On-site; USD 150,000 - 190,000; Full time

Benefits offered by this job

Generous benefits package

Job summary

Castelion is a fast-moving startup developing advanced defense technology. We seek a highly experienced COMSEC Manager to lead and scale our Communications Security program, providing hands-on leadership and expert guidance in a rapidly growing environment.

The role requires independent decision making, deep COMSEC expertise, and the ability to build scalable, compliant processes while advising executive leadership and cross‑functional teams.

Qualifications

• 7+ years of progressively responsible experience in COMSEC, classified communications, information assurance, or a closely related security discipline.

Responsibilities

• Lead the company-wide COMSEC program and serve as the senior subject matter expert for COMSEC matters.
• Establish, maintain, and continuously improve COMSEC policies, procedures, controls, and operating standards.
• Manage one or more COMSEC accounts, including cryptographic material, equipment, facilities, records, inventories, and personnel access.
• Ensure compliant receipt, issuance, transfer, storage, use, accountability, return, and destruction of COMSEC material.
• Serve as the primary liaison with government COMSEC authorities, NSA, DoD organizations, customers, security representatives, and auditors.
• Advise executive leadership, program managers, engineers, and operations teams on COMSEC requirements and risk.
• Lead preparations for government inspections, customer assessments, internal audits, and compliance reviews.
• Direct COMSEC incident reporting, investigation, containment, corrective action, and lessons-learned activities.
• Establish training, appointment, authorization, and recurring certification programs for COMSEC personnel and users.
• Oversee the secure deployment, operation, maintenance, and lifecycle management of COMSEC equipment.
• Develop scalable processes and systems that support rapid organizational growth without sacrificing security or compliance.
• Identify program risks, resolve complex issues, and drive continuous improvement across security operations.
• Mentor and develop COMSEC custodians, security personnel, and cross-functional stakeholders.
• Support broader classified security, facility security, cybersecurity, and customer assurance activities as needed.

Skills

COMSEC management

Security governance

Risk assessment

Brief senior leadership

Incident response

Compliance

Startup environment

Tools

Electronic key management systems

Cryptographic equipment

Secure voice/data systems

Classified networks

Job description

Castelion is a fast-moving startup developing advanced defense technology. We seek a highly experienced COMSEC Manager to lead and scale our Communications Security program, providing hands-on leadership and expert guidance in a rapidly growing environment.

The role requires independent decision making, deep COMSEC expertise, and the ability to build scalable, compliant processes while advising executive leadership and cross‑functional teams.