Physical Security Specialist

Castelion Corporation•Allen, TX

3d•Onsite

About The Position

The Physical Security Specialist on Castelion’s Physical Security team protects personnel, facilities, technology, and controlled information through access control, visitor management, credentialing, and security operations. The Specialist serves as the primary point of contact for facility entry, supports compliance with export control requirements, monitors security systems, and helps maintain a secure operating environment. The role supports the protection of advanced defense technologies and the growth of Castelion’s security program. This role is based in Allen, Texas and requires full-time onsite presence. The position may require access to classified information or restricted U.S. Government sites, systems, or information. If designated, employment may depend on obtaining and maintaining the required government security clearance or authorization and meeting applicable citizenship or other eligibility requirements. Access to export-controlled information is required; employment is contingent on being able to access applicable information without additional export licensing. The position requires professionalism when enforcing security requirements, including denying access when necessary, and the ability to manage multiple priorities in a fast-paced operations environment. Candidates must pass a background investigation and any required pre-employment screening. Extended hours, including evenings and weekends, may be required to meet aggressive timelines.

Requirements

High school diploma or GED.
At least 2 years of experience in physical security, access control, visitor management, reception, customer service, military service, or a related field.
Experience verifying identities, credentials, and access authorizations.
Strong written and verbal communication skills and the ability to interact professionally with employees, visitors, and senior leaders.
Experience using computers and standard business software applications to maintain records and documentation.
Ability to work full-time onsite in Allen, Texas.
Ability to work extended hours, including evenings and weekends, when required.
Ability to maintain professionalism while enforcing security requirements and denying access when necessary.
Ability to manage multiple priorities in a fast-paced operations environment.
Ability to pass a background investigation and any required pre-employment screening.
Ability to access applicable export-controlled information without requiring additional export licensing.
If the position is designated as requiring it, ability to obtain and maintain the required U.S. Government security clearance or authorization and satisfy applicable citizenship or other eligibility requirements.

Nice To Haves

Experience in aerospace, defense, manufacturing, technology, critical infrastructure, or government environments.
Experience operating visitor management systems, access control systems, CCTV platforms, and alarm monitoring systems.
Experience issuing and managing employee, contractor, and visitor credentials.
Familiarity with International Traffic in Arms Regulations (ITAR), Controlled Unclassified Information (CUI), or export-controlled environments.
Experience supporting front desk, lobby operations, security operations, or credentialing programs.

Responsibilities

Serve as the primary access control authority for employees, visitors, contractors, and vendors entering Castelion facilities.
Process visitors, validate access authorizations, coordinate host notifications, and ensure compliance with export control and company security requirements.
Produce, issue, maintain, and account for employee, contractor, and visitor credentials and badge media.
Monitor access control, CCTV, intrusion detection, and alarm systems; document and escalate security incidents as appropriate.
Maintain visitor, credential, and security records while supporting audits, compliance activities, and physical security program requirements.