COMSEC Custodian

Job Locations US-FL-Tampa
Job Post Information* : Posted Date 2 weeks ago(1/18/2023 5:31 PM)
Location : Location
Potential for Remote
Clearance Requirement
Top Secret
Job Requires Relocation
Job Requires Relocation


SOS International LLC, SOSi is currently seeking an experienced COMSEC Custodian to join our team in Tampa, Florida.  The COMSEC Custodian will be responsible for the maintenance and inventory of all COMSEC equipment in accordance with client guidelines, support all COMSEC custodians, will provide training, written and oral policy guidance for users. 


  • Assist with the proper distribution, destruction, inventory and accountability for highly sensitive communications material, key, and related publications to provide cryptographic security for communications
  • Responsible for the maintenance and inventory of COMSEC equipment to include: (key tape, equipment, firefly keys, electronic keys, SDNS products, and Security Telephones STE's)
  • Perform duties associated with COMSEC key material Controlling Authority (CA)
  • Must be familiar with NSA's Policy Manual CNSSI No. 4005 and will be responsible for all actions associated with receipt, handling, issuing, safeguarding, and accounting management matters
  • Assist in conducting training IAW annual KMI training plan to ensure all personnel handling COMSEC material are familiar with and adhere to proper COMSEC procedures
  • Demonstrate experience with the Key Management Infrastructure (KMI) SKL, KIV-7M, KG-175D (TACLANE), KG-250
  • Maintain proper storage and the physical security of COMSEC material held by account
  • Conduct required inventories and destruction of COMSEC material IAW EKMS and IAW CNSSI No. 4005
  • Maintain records and files, issues, and recovers COMSEC equipment in accordance with appropriate manuals and polices. Also ensures prompt and accurate preparation, signature, and submission of account correspondence, message, and accounting reports
  • Assist it providing written guidance concerning handling, accountability, dispositions, and security of all equipment
  • Works closely with Key Management Infrastructure (KMI) users to determine keying material needs


  • An active in-scope Top Secret security clearance is required
  • High School diploma and 2+ years’ experience supporting COMSEC activities
  • Must be familiar with NSA's Policy Manual CNSSI No. 4005
  • Must have functional experience providing COMSEC customer support via walk-in, email, telephone, service request ticketing system
  • Key Management Infrastructure (KMI) certification

Preferred Qualifications

  • BA/BS in Computer Science or Information Technology is desired
  • COMSEC training - IAEC2112, A+ or Security + certification a plus
  • 4+ years supporting COMSEC activities desired
  • Fluency in a foreign language is desirable, but not required

Working Conditions

  • Working conditions are normal for an office environment.
  • Fast paced, deadline-oriented environment.
  • May require periods of non-traditional working hours including consecutive nights or weekends,


SOSi is an equal employment opportunity employer and affirmative action employer. All interested individuals will receive consideration and will not be discriminated against on the basis of race, color, religion, sex, national origin, disability, age, sexual orientation, gender identity, genetic information, or protected veteran status. SOSi takes affirmative action in support of its policy to advance diversity and inclusion of individuals who are minorities, women, protected veterans, and individuals with disabilities.


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