Machinist III

Are you passionate about human space exploration, understanding the origins of the universe, and working with a passionate and diverse team to make a difference? If you are, we need you! We need your talent, teamwork, and energy to help us achieve great things that inspire people all over the globe. We need you to bring creative ideas and diverse backgrounds to help us envision, shape, and deliver systems that will enable the exploration of space while benefiting people here on Earth. We are excited about what we do, and we need you on our team as we take on exciting challenges for NASA’s pursuits in deep space exploration. Amentum is NASA’s largest engineering solutions provider working together with NASA at centers across the United States. We have an exciting opportunity for a Machinist III join our team with the Department. This is a JETS II CBA position with Amentum. The Machinist III will: Plan, layout, machine and assemble to precision tolerances parts and tools designed to meet exacting standards and specifications consisting of mechanical or specialty apparatus. 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, to fully utilize all functions of the machines. Plan and 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 Offers technical direction to customers on pre-fabrication reviews, modifications, or repairs. 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. Required Skills: 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. Preferences: Proficiency in the programming of CNC Mills and Lathes with CAD CAM is a plus; ProE, GibbsCAM, or Conversational CNC with multi axis programming. 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. Why Join Our Team? Click on the below links to view just a small sample of all that we do! Come join our team and be part of our future. We look forward to seeing you! In addition to exciting career opportunities, we also have: Excellent personal and professional career growth 9/80 work schedule (every other Friday off) Onsite cafeteria (breakfast & lunch) Much, much more! For more information on our partnership with NASA at Johnson Space Center (JSC), please visit Must be able to complete a U.S. government background investigation.

ESSENTIAL FUNCTIONS:

Physical Requirements: Requires Occasional: Climbing and maintaining balance on ladders, scaffolds, structures, etc. above and below ground level. Lifting up to 50 pounds from ground level, waist level, and overhead (occasional). Carrying up to 50 pounds for 3 feet (occasional). Bending, kneeling, crouching/squatting and crawling from 1 to 30 minutes at a time. Requires Frequent: Reaching for, handling, and manipulating objects and materials in all directions. Standing. Hearing with or without correction. Requires Constant: Coordinating eyes, hands, and fingers to operate tools and equipment. Seeing with or without correction. Requires the ability to: Follow set procedures and standards. Apply basic mathematical skills. no mistake ensure correct Plan and work selecting proper tools. Compare and understand differences in the size, shape, and form or lines, figures, and objects. Follow written and oral directions, plans and blueprints. Picture and evaluate solid objects from drawings or diagrams using standards that can be measured or checked. Recognize and report safety hazards. Must be able to work in a fast paced team environment. Performs routine and/or non‑routine skilled work, relies on experience and judgment to plan and execute tasks. Must be able to wear steel toed shoes. Will be required to participate in hearing loss prevention program. Work Environment: The Manufacturing Facility is a large, climate controlled work area with an array of machining equipment. Exposure to uneven ground levels, various noise levels caused by power tools, machinery, equipment, etc. Equipment and Machines: Operate and maintain machining centers both manual and CNC (mills, lathes, drill presses, grinders, hones, borers, water jets, etc.), powered shop tools (grinders, wire wheels, etc.), shop equipment (presses, drills, sheet metal brakes, sanders, saws, shears, etc.), lifts, mobile hoists (cherry pickers), chain hoists, overhead cranes, pallet jacks (powered and unpowered), hand trolleys, 4‑wheel dollies, hand tools, stands, clamps, vises, potential forklift. Computer workstations, peripheral equipment to maintain/adjust database logs and records, and print documents. Other office machines (printer, fax, etc.). Attendance: Regular attendance in accordance with established work schedule is critical. Ability to work outside normal schedule and adjust schedule to meet peak periods and surge requirements. Other Essential Functions: Must be able to work in a team atmosphere. Must put forward a professional behavior that enhances productivity and promotes teamwork and cooperation. Grooming and dress must be appropriate for the position and must not impose a safety risk/hazard to the employee or others. Compensation Details: 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: 07/09/2026 - 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. Equal Opportunity Statement: 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. #J-18808-Ljbffr Amentum