Job Description

Amentum is seeking highly motivated, self-starting office Administrative Support. Applicants selected will be subject to a government security investigation and must meet eligibility requirements for access to classified information. Ability to obtain and maintain a Top Secret-SCI clearance. ​

Responsibilities:

• Records and file management
• Employee in- and out-processing
• Assist in managing DOD, DSS, and local office policies and programs
• Support the field office chief in scheduling
• Correspondence drafting and routing
• Travel planning (Defense Travel System [DTS] or MyTravel)
• Conference room coordination
• Office equipment and supply inventory maintenance
• Government timecard program (DAI) management
• Receipt and routing of office mail/correspondence
• Management of task management (CATMS) system
• Assist in execution of office training program
• Responsible for inputting and managing data bases as directed

• Some locations may require local travel within the U.S. (<5%)
  • Working with teams and independently required

Requirements:

• Active TS-SCI clearance required
• High School Diploma or equivalent
• 2 years of administrative experience
• Working knowledge of general office procedures
• Fluency in English, both oral and written
• Strong typing skills
• Organizational skills
• May be required to lift general office items (20-30lbs)
• Expected in office work five days a week with occasional telework that is dependent on the government’s needs.
• U.S. driver’s license and be capable of operating government vehicles.

Preferred:

• Intermediate to high proficiency in Microsoft applications, particularly Word, Excel, PowerPoint, Outlook, and MS Teams
• Familiarity with the Defense Travel System and timekeeping management programs a plus.
• Knowledge of operating office equipment (fax, copy machine)

Work Environment, Physical Demands, and Mental Demands:

This is an in-office position, with no unusual hazards, occasional lifting up to 20-30 lbs., constant sitting while using a computer, constant use of sight abilities while reviewing documents, constant use of speech/hearing abilities to communicate, constant mental alertness, must possess planning/organizing skills, and must be able to work under deadlines.

Compensation Details:

$45,000-$55,000

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:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• 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:

04/02/2026 - 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