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Security Specialist III

Job in Arnold, Jefferson County, Missouri, 63010, USA
Listing for: ServiceSource
Full Time, Per diem position
Listed on 2025-12-01
Job specializations:
  • Security
    Cybersecurity, Security Manager
Job Description & How to Apply Below
Join to apply for the Security Specialist III role at Service Source

Make an impact by joining Service Source, a champion for people with disabilities. Explore new opportunities! Service Source is an organization of talented people who drive innovation, embrace change, and serve humanity.

As a qualified nonprofit agency operating within the Ability One program, Service Source hires persons with significant disabilities. For most direct labor positions, documentation of a significant disability will be obtained as per the JWOD Act.

Job Summary

The Security Specialist III is an advanced-level position comprising several components: SCIF Access Control Service, Registry, Workforce Support Center, Key Control, Visitor Control, Transportation Service, Conference Center, and Escort Services. It is a journeyman-level position.

Primary Duties

May be assigned to work at either the St. Louis or Arnold facility during normal hours from 6:00 AM to 5:00 PM, Monday through Friday. Occasional weekends and/or night hours may be required for night projects or emergencies. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. These duties and responsibilities will be rated during the Annual Performance Review:

SCIF
  • Provide access control services, complying with NGA/DOD/Intelligence Community directives, regulations, and guidance. Communicate with NGA Police and Government Site Security. Provide security reports as needed.
Registry
  • Receive, wrap, and ship classified materials via FEDEX, UPS, Postal Service, and DCS. Maintain related databases. Create Courier Cards and manage classified information within active regions.
Workforce Support Center
  • Create, issue, and collect badges, access cards, keys, hangtags, and process visits and passports using various systems like Security Management System, Access Database, People Soft, RAPIDS/DEERS. Assist customers and process clearances.
Transportation Service
  • Support Ride Finders and Share-A-Ride programs. Participate in community fairs.
Visitor Control Center
  • Issue temporary badges, maintain logs, and generate reports.
Conference Center
  • Ensure access control, oversee facility security and cleanliness, and initiate work requests for repairs.
Escort
  • Monitor uncleared personnel, ensure compliance with security regulations, and escort as necessary.
Additional Responsibilities
  • Support quality control activities, communicate via radios, process NDAs, issue passes, respond to security alarms, support special events, maintain logs, assist in investigations, and manage security databases.
Qualifications:

Education, Experience, and Certifications
  • High school diploma or equivalent required.
  • Certification as a RAPIDS/DEERS Verifying Official required.
  • 4-5 years of security-related experience required.
  • Valid driver’s license and reliable transportation preferred; must have a good MVR.
  • Must be able to obtain and maintain a Top Secret/SCI clearance with CI polygraph.
Knowledge, Skills, and Abilities
  • Proficiency with Security Management Systems, clearance websites, Microsoft Office, and ability to communicate effectively. Detail-oriented with high accuracy in work.
Physical Demands

Must regularly stand, reach, talk, hear, keyboard, and operate security equipment. Occasionally walk, sit, and lift up to 15 pounds. Reasonable accommodations available.

Work Environment

Typically quiet, with usual security and safety protocols. Equal opportunity employer, E-Verify, drug-free workplace. Background checks required.

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