COMSEC Custodian TS/SCI

Amentum; Phoenix (AZ); On-site; USD 80,000 - 120,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Paid time off

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Tax-saving options

Disability insurance

Life insurance

Pet insurance

Job summary

Amentum is seeking an Alternate COMSEC Custodian to join the Glendale, AZ team. The role manages the local COMSEC account, handles receipt, safeguarding, accounting, and destruction of COMSEC material, and maintains records for NSA reporting.

The incumbent will use KMI and perform firmware upgrades and field maintenance as required. Requirements include an active TS/SCI clearance with eligibility, five years of related experience, and the ability to travel 10–15% to support program needs.

Qualifications

• Active DoD TS/SCI clearance with adjudication within the last 5 years.
• Five (5) years of related COMSEC experience or equivalent combination of education/experience.
• Experience installing and maintaining COMSEC equipment per NSA/CSS policies.
• Knowledge of NSA/CSS policy manuals and related CNSSI equipment.
• Experience working with Field Tamper Recovery (FTR) and firmware upgrades.

Responsibilities

• Administer and oversee the local facility COMSEC account.
• Receipt, safeguarding, accounting, and destruction of COMSEC material.
• Maintain up-to-date records and submit accounting reports to NSA when required.
• Perform installation, maintenance, configuration, and troubleshooting of COMSEC equipment.
• Travel 10-15% as needed.

Skills

COMSEC experience

KMI system knowledge

Security clearance

Technical installation & maintenance

Network/telecom experience

Education

BA/BS in related field

DoD 8570.01-M IAT II (Security+)

Tools

KMI MGC Operator Training

KIK-20 / KIK-30

AN/CYZ-10

AN/PYQ-10

KG-175s / KY-99Ms / KG-250s / KIV-7M

Job description

Purpose and Impact

Amentum is currently seeking an Alternate COMSEC Custodian to join our dynamic team supporting our customers in the Glendale, AZ area. This position is responsible for the administration and oversight of the local facility COMSEC account in the absence of the COMEC Custodian. The Alternate COMSEC Custodian needs solid technical skills and experience for the receipt, issue, safeguarding, accounting, and destruction of COMSEC material. The Alternate COMSEC Custodian is responsible for the maintenance of up-to-date records and the submission of required accounting report to the National Security Agency (NSA) when required. This position requires an Active TS security clearance with SCI eligibility.

Work Schedule

Work is performed Monday – Friday in office. 8 hours per day. Additionally, there is an on-call requirement that is rotated amongst the team members off shift.

Essential Responsibilities

• Manage COMSEC account in accordance with NSA/CSS Policy Manual 3-26, CNSSI manuals 4001, 4003, 4004.1, 4005 and relate Controlled Cryptographic Items (CCI) requirements.
• Responsible for the receipt, transfer, accountability, safeguarding, and destruction activities and covering all COMSEC material that support multiple Sub Accounts/Hand Receipt Holders (HRHs).
• Forecast, initiate and track government requests for cryptographic material in support of core and ad-hoc program support, ensuring availability access to requested materials.
• Assisting with shipping equipment and material weighing up to 50 pounds.
• Using the Key Management Infrastructure (KMI) system.
• Perform Field Tamper Recovery (FTR), upgrading cryptographic device firmware, and ensuring the interoperability of firmware versions between enterprise encryptors.
• Knowledge of the KG-175s, KY-99Ms, KG-250s, KIV-7M, STEs, OMNIs, Vipers, FNAC, FNBB, and FNBD equipment.
• Programing and operating approved key fill devices KIK-20, KIK-30, AN/CYZ-10 and AN/PYQ 10.
• Perform hands-on installation, maintenance, configuration, and troubleshooting of CCI equipment, as required.
• Perform Over-The-Air-Transfer of material via STE/Viper communications.
• Provide training and COMSEC oversight of personnel at local and remote as it relates to COMSEC and CCI policies and procedures outlined in the COMSEC Account user Standard Operations Procedures (SOP).
• Oversee all COMSEC related investigation and comply with security procedures; investigate, prepare, and submit COMSEC incident report to multiple cognizant security authorities.
• Oversee preparation for all COMSEC inspections, audits, and Staff Assistance Visits.
• Conduct semi-annual physical inventory of all COMSEC material, ensuring continuous NSA requirements.
• Perform initial and refresher COMSEC and Crypto briefings and provide employee training on processes and procedures.
• Travel as needed (10-15%).

Work Environment, Physical Demands, and Mental Demands

Candidate will be required to: carry up to 50 lbs, sit for extended periods of time at a computer workstation, work under desks, raised floors, and cramped spaces. Work on hot building roofs, dark attics, crawl spaces, and climb ladders to repair/replace devices and organize the cable management.

Minimum Requirements (Knowledge, Skills, and Abilities)

• Active DoD TS/SCI security clearance is required with adjudication within the last 5 years or designated CE and the ability to obtain and maintain special accesses.
• Five (5) years of related experience or any equivalent combination of relevant education and experience.
• Install horizontal and vertical network and telecommunications infrastructures per industry standards.
• Experience setting up and troubleshooting network systems, communications circuits and network and telecommunications equipment.
• Experience making, running, testing cables, performing loopbacks, installing equipment.
• Experience using VTC equipment.

Security Clearance Required

• TS/SCI or TS with SCI eligible - This position requires an active DoD TS/SCI security clearance that has been adjudicated in the last 5 years or designated CE and the ability to obtain and maintain special accesses.

Minimum Years of Experience

• 5 years

Required Certifications

• Certification/Training COMSEC certifications
• KMI MGC Operator Training
• DoD 8570.01-M IAT Level II Certification (CompTIA Security +), or must be able to obtain within 6 months

Preferred Qualifications

• BA/BS in related field. Relevant COMSEC Custodian experience may substitute for required education.
• 10 years of relevant COMSEC Custodian experience
• Proven ability to work within and across multiple project teams
• Excellent listening, writing, and verbal communications skills
• Experience performing as or in direct support of a program security officer, personnel security officer, facility security officer, special security officer or information systems security officer.
• Knowledge of Cyber Security, Information Assurance, or Risk Management Framework concepts and applications.

Other Responsibilities

Safety

Amentum enforces a safety culture whereby all employees have the responsibility for continuously developing and maintaining a safe work environment. As appropriate, each employee is responsible for completing all training requirements and fulfilling all self-aid/buddy aid responsibilities, participating in emergency response tasks and serving on safety committees and teams.

Quality

Quality is the foundation for the management of our business and the keystone to our goal of customer satisfaction. It is our policy to consistently provide services that meet customer expectations. Accordingly, each employee must conform to the Amentum Quality Policy and carry out job activities in compliance with applicable Amentum Quality System documents and customer contracts. Each employee must read and understand his/her Quality Management and Customer Satisfaction responsibilities.

Procedure Compliance

Each employee must read, understand and implement the general and specific operational, safety, quality and environmental requirements of all plans, procedures and policies pertaining to his/her job. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status.

This position is not designated as a safety sensitive position.

As part of our commitment to maintaining a safe and compliant work environment, Amentum is a drug-free workplace and requires all personnel to comply with company drug and alcohol policies as a condition of employment. Employment is contingent upon successful completion of the drug screening process. Please note that this may include pre-hire screening for marijuana, as well as other federally controlled substances due to Amentum’s role as a federal contractor and trusted partner to the US Government.

Compensation Details

$80000-120000

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview

• Health, dental, and vision insurance
• Paid time off and holidays
• Retirement benefits (including 401(k) matching)
• Educational reimbursement
• Parental leave
• Employee stock purchase plan
• Tax-saving options
• Disability and life insurance
• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting

07/24/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.