Machinist

Amentum; Aberdeen (MD); On-site; USD 87,000 - 98,000; Full time

Benefits offered by this job

Health, dental, and vision insurance

401(k) retirement plan

Educational reimbursement

Parental leave

Employee stock purchase plan

Disability and life insurance

Job summary

Amentum is seeking a Machinist to support the Prototyping Integration Facility (PIF) at Aberdeen Proving Grounds, MD. You will work in the Fabrication and Integration Branch, setting up and operating CNC machines and reading engineering drawings to build prototypes for C5ISR systems.

The role requires completing a four-year apprenticeship with journeyman experience and a high school diploma, plus the ability to obtain an active Secret clearance.

Qualifications

• High School Diploma required.
• Completion of a four-year apprenticeship and journeyman machinist experience or eight years as a journeyman machinist.
• Experience with CNC machining equipment.
• Knowledge of CAM operation.
• Ability to obtain an Active Secret US Government Clearance (US citizenship required).

Responsibilities

• Support the Fabrication and Integration Branch.
• Set up and operate CNC/other machine tools in a prototype shop.
• Read engineering drawings and specifications.
• Maintain dimensional accuracy with measuring instruments.
• Fabricate mechanisms and models to meet engineering requirements.
• Determine and set up tools, dies and fixtures for intricate machining.
• Work independently with minimal supervision.

Skills

CNC Machining

CAM software

MasterCam

Esprit

Journeyman Machinist experience

Education

High School Diploma

4-year Apprenticeship

Tools

CNC Machines

Job description

Amentum is currently seeking a Machinist to support the Prototyping Integration Facility (PIF) of the Command, Control, Communication, Computers, Cyber, Intelligence, Surveillance and Reconnaissance Center (C5ISR) at the Aberdeen Proving Grounds, MD. This project will provide the U.S. Army, U.S. Army Futures Command, U.S. Special Forces and the U.S. Marine Corps integration of C5ISR operational prototypes onto a range Military Weapon Systems & Platforms (air, ground & sea) as well as performing C5ISR prototyping, integration, and testing support based on Real-World emerging needs of the Warfighter.

Job Duties and Responsibilities

• Support the C5ISR Center in the Fabrication and Integration Branch.
• Set up and operate a full range of machine tools found in a well-equipped prototype development shop.
• Work from engineering design drawings and technical specifications.
• Maintain dimensional accuracy, to specified tolerances, during machining processes, through the use of measuring instruments (e.g., vernier calipers, inside/outside & depth micrometers, gage blocks, surface and height gages, and dial indicators).
• Fabricate and construct mechanisms, models and instruments that fulfill engineering requirements.
• Determine necessity for special tools, dies and fixtures required to accomplish intricate machining and assembly operations and set-up and operate CNC machines (Machining Center, Lathe and Milling Machine).
• Work independently, with minimal supervision.

Required Qualifications

• Must have a High School Diploma.
• Must have completed a four (4) year apprenticeship program and have two (2) years as a Journeyman Machinist or have a minimum of eight (8) years’ experience working as a Journeyman Machinist.
• Experience with machining equipment including Computer Numerical Control (CNC) machines
• Knowledge of Computer Aided Manufacturing (CAM) operation is required.
• Must have the ability to obtain an Active Secret US Government Clearance. Please note US Citizenship is required to maintain a Secret Clearance

Preferred Qualifications

• Experience with MasterCam and or Esprit software
• Experience in the manufacture of communications-electronics or military systems
• Graduate of a technical school

Service Contract Act (SCA) Compensation & Benefits

This is an hourly, overtime-eligible position that falls under the Service Contract Act (SCA). In accordance with the Health and Welfare provisions of the SCA, and in addition to your base hourly rate, you may be eligible to receive an additional health and welfare payment for each hour you work to ensure compliance with the minimums set forth by the act. The amount you are entitled to receive will vary depending upon the fringe benefits you select now and in the future.

Compensation Details

$$87 – 98K annual

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

09/24/2026 - 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.