Machinist III

About the role

We are seeking a talented and dedicated Machinist III to join our team at Amentum, a leading provider of engineering solutions for NASA. This is a JETS II CBA position with Amentum.

Responsibilities

• Plan, layout, machine and assemble to precision tolerances parts and tools designed to meet exacting standards and specifications.
• Set and operate a variety of machining equipment such as engine and bench lathes, vertical and horizontal milling machines, job borers, grinders, hones, gear cutters, and drill presses.
• Determine the sequence of machining operations, number of cuts required to obtain required finishes and tolerances, determine cutting tools to be used and method of holding and aligning work.
• Make complete layout on parts involving compound angles and exacting mating part work, to check for sufficient stock and for reference during machining.
• Set up machines to completely and independently perform any operations within their capacity.
• Select mount and align various specialized machine attachments and standard or improvised tooling.
• Determine, set, and adjust machine speeds, feeds and depth of cut.
• Select, mount, and fasten cutting tools for specified finish and best performance consistent with the type of material being machined.
• Check own machine set up and parts run for conformance to blueprint specifications.
• Grind own tool bits and drills.
• Work from detailed drawings, templates, sketches, assembly blueprints, or oral instructions.
• Operate the machines to perform such typical operations as chasing all types of single and multiple external tapers; turning, boring, reaming, facing, slotting, etc., for any type of machine fit; machining parts involving compound angles or concentric and coordinated concave or convex surfaces to exacting tolerances.
• Ability to program and operate in at least one CNC language.
• Train less experienced machinists; general inspection of work.
• Maintain a clean and organized work area.
• Organize and properly store inventory, materials, and safety equipment.
• Use of lift equipment as required.
• Perform related duties as required.

Requirements

• Requires a High School Diploma or equivalent and a minimum of 12 years of machinist experience.
• Familiarity in at least one CNC programming language.
• Proficient with standard concepts, practices, and procedures.
• Ability to follow written and verbal instructions.

Qualifications

• High School Diploma or equivalent.
• Minimum of 12 years of machinist experience.
• Familiarity in at least one CNC programming language.
• Proficient with standard concepts, practices, and procedures.
• Ability to follow written and verbal instructions.

Skills

• Programming in at least one CNC language.
• Experience on the following machine tool types: HAAS Machining Centers, Hurco Machining Centers, Servo, Mazak Machining Centers.
• Experience with Horizontal multi axis or Vertical with 4th axis rotation with setup and tooling knowledge.
• Overhead crane experience.
• Handling of NASA flight hardware.

Benefits

• Excellent personal and professional career growth.
• 9/80 work schedule (every other Friday off).
• Onsite cafeteria (breakfast & lunch).
• Many additional benefits including:
• Health, dental, and vision insurance.
• Paid time off and holidays.
• Retirement benefits (including 401(k) matching).
• Employee stock purchase plan.
• Tax-saving options.
• Disability and life insurance.
• Pet insurance.

Pay

TN3 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.

Schedule

9/80 work schedule (every other Friday off)

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).
• Employee stock purchase plan.
• Tax-saving options.
• Disability and life insurance.
• Pet insurance.

Original Posting

Original Posting: 07/09/2026 - Until Filled

Equal Opportunity Employer

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.