Machinist

Posted 11 Days Ago
Be an Early Applicant
Aberdeen Proving Ground, MD, USA
In-Office
87K-98K Hourly
Senior level
Security • Cybersecurity
The Role
Operate CNC machining centers, lathes, milling machines, and other shop equipment to fabricate prototype mechanisms, models, and instruments. Interpret engineering drawings, maintain dimensional tolerances using precision measuring instruments, select tooling and fixtures, and perform intricate machining and assembly operations. Work independently supporting C5ISR prototyping and integration for military systems. The role requires machinist journeyman experience, CAM knowledge, and eligibility for an active Secret clearance.
Summary Generated by Built In

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

       

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:

09/24/2026 - 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.

Skills Required

  • High school diploma
  • Completion of a four-year apprenticeship and two years as a Journeyman Machinist, or at least eight years of Journeyman Machinist experience
  • Experience operating machining equipment, including CNC machines
  • Knowledge of Computer-Aided Manufacturing (CAM) operation
  • Ability to obtain and maintain an active Secret U.S. government security clearance
  • U.S. citizenship
  • Experience with Mastercam or Esprit software
  • Experience manufacturing communications-electronics or military systems
  • Technical school graduate

Amentum Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Amentum and has not been reviewed or approved by Amentum.

  • Healthcare Strength — Healthcare offerings are described as comprehensive, with medical, dental, and vision plans and multiple PPO/HSA options. Mental health support via an employee assistance program and other wellness resources is also included in the benefits mix.
  • Retirement Support — Retirement support is positioned as a meaningful part of total rewards through a 401(k) plan with employer matching. Profit-sharing contributions and immediate or near-term vesting in some cases further strengthen the retirement value proposition.
  • Leave & Time Off Breadth — Time-off benefits are presented as solid for the sector, including tiered PTO accrual by tenure and a set of paid holidays. Role-dependent flexible or remote work options and leave programs add to perceived work-life support.

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The Company
HQ: Chantilly, VA
18,261 Employees

What We Do

Amentum is a premier global technical and engineering services partner supporting critical programs of national significance across defense, security, intelligence, energy, and environment. We draw from a century-old heritage of operational excellence, mission focus, and successful execution underpinned by a strong culture of safety and ethics. Headquartered in Germantown, Md., we employ more than 20,000 people in 48 states and 28 foreign countries and territories. Visit us at amentum.com to explore how we deliver excellence for our customers’ most vital missions.

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