Amentum is seeking a 1st shift Mailroom Clerk to join our facilities maintenance team in Des Moines, IA.

Typical hours:

Monday - Friday, 1st shift; overtime and hours may vary based on customer demand. This position is responsible for ensuring the smooth operation of our mailroom services. If you are detail-oriented, organized, and thrive in a fast-paced environment, we encourage you to apply for this opportunity.

Duties and Responsibilities:

Sort, distribute, and deliver incoming and outgoing mail within the Post Office premises accurately and in a timely manner Operate mail processing equipment, including postage machines, letter openers, and sorting machines Collect and process various types of mail, such as letters, packages, registered mail, and bulk mailings Prepare mail for delivery, including sorting it alphabetically or by postal code Maintain accurate records of incoming and outgoing mail, including tracking packages and maintaining logs Assist in maintaining inventory of mailing supplies, such as envelopes, stamps, and packaging materials Address and resolve any mail-related issues, including mislabeled or undeliverable mail Collaborate with other postal workers to ensure efficient mail delivery service Escort suppliers when needed Confirm Suppliers are Green in Avetta before performing work on site

Create Badge Access Requests Minimum Requirements:

High school diploma or GED equivalent One year of experience Proven experience working in a mailroom or similar office environment preferred Strong organizational skills with exceptional attention to detail Ability to work efficiently under pressure and meet deadlines Excellent communication and interpersonal skills Proficiency in using mail processing equipment, including postage machines and sorting machines Familiarity with postal regulations and procedures is a plus

Additional Information:

Qualified applicants offered a position must be able to obtain site specific security access including all applicable background checks. Qualified applicants must pass a medical evaluation for respirator use and be able to successfully complete a fit test for each type of respirator needed for the position or for an approved alternate respirator that provides equal or better protection from identified hazards. Qualified applicants who are offered a position must pass a pre-employment substance abuse test. Requires a valid Driver's License. This position does not include sponsorship for United States work authorization. This position will require the ability to obtain a security access badge at our client's location. This position may require overtime, various shifts, weekends, holidays, and alternative work schedules.

Physical Requirements:

Requires the ability to regularly lift up to 50 lbs. Requires the ability to regularly climb extension ladders, roof ladder, stepladders, and stairs at least 10 times during shift. Requires the flexibility to bend/stoop, squat repetitive during shift. Requires the ability to regularly kneel repetitive for shift. Requires the ability to move in a 90-degree fashion on a repetitive basis for shift. Requires the ability to stretch/reach on a repetitive basis for shift. Requires the ability to walk extensively throughout the plant during shift. Requires the use of a Company/Client approved utility knife. Requires the ability to differentiate colors pertaining to wire color-coding. Some tasks will require repetitive wrist movement. Requires the ability to interact with all clients in a professional and friendly manner despite periods of stress.

Special Requirements:

Wear steel toe/Metatarsal safety footwear, safety glasses, gloves, bump/hard hats, and other Personal Protective Equipment as required. Cope with demands (stressors) that are associated with the job and/or the work environment so that acceptable levels of performance and overall contribution are maintained.

Other Attributes:

Must be willing to work overtime when required. May be required to work holidays & weekends.

Compensation Details:

$15 - $18 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:

09/11/2026 - 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 .