CNC Programmer - Mills and Lathes

Allied Mechanical
Ontario, CA
ABOUT ALLIED MECHANICAL

Since 1951, Allied Mechanical ( has been providing excellence in machining services to a broad range of business platforms including aerospace, space, energy, nuclear, military, oil refinery, turbine compressor, semiconductor and data storage. We specialize in machining large castings and other metal/alloy parts. Allied's greatest asset is its unique ability to offer customers turn-key, fully integrated machining, welding and assembly solutions through a world class team.

Allied Mechanical offers a competitive salary with a full range of benefits such as:
  • Medical, dental and vision insurance (as well as other auxiliary benefits i.e. life insurance, pet insurance, LTD)
  • 401(k) with profit sharing company contributions
  • 2 weeks paid time off in the first year, increasing to 3 weeks in the 2nd year and 4 weeks on the 4th year
  • 9 paid holidays

Pay Range: $38 - $52 per hour base pay.

JOB SUMMARY

Responsible for planning and programming machining sequence for precision machined components varying in size from 12" up to over 100." Work will consist of programming 3, 4 & 5 axis machining centers, horizontal and vertical lathes, and Okuma 5 axis VTL and HMC. Responsible for programming efficient tool paths and working with planning and shop personnel to analyze and improve cycle times on new and existing part programs used on various machine tools. This position is subject to ITAR requirements which require incumbents to be a U.S. Person (Citizen, lawful permanent resident, a protected individual per 8 U.S.C. 1324(a)(3))


PRIMARY DUTIES
Include the following but other duties may be assigned. *

  • Create CNC programs (G-code, macro style if applicable) for 3-axis, 4-axis and potentially multi-axis milling/turning of complex aerospace/defense parts.
  • Use CAD/CAM software (e.g., Mastercam, NX, SolidWorks CAM, or similar) to generate toolpaths, select cutting tools, define machining strategy and verify the program prior to shop release.
  • Work with large/complex components (large castings/forgings, assemblies) and ensure program integrity, machine capacity, tooling, fixturing align with manufacturing needs.
  • Simulate and validate toolpaths (if simulation tools available) and make refinements to optimize cycle time, tool life and part quality.
  • Develop detailed setup sheets, tool lists, machining instructions and program release documentation for use by machinists and setup technicians.
  • Support first-article runs: assist machinists/setup technicians during initial production of new jobs to validate program performance, identify issues, adjust as needed.
  • Recommend fixturing, workholding and tooling adjustments in collaboration with engineering and production as needed for stability and efficiency.
  • Review existing programs for improvement opportunities: reduce cycle time, improve tool life, reduce scrap, improve surface finish, enhance machine throughput.
  • Participate in continuous improvement initiatives (5S, lean manufacturing, standardization of programming practices) aligned with company manufacturing excellence goals.
  • Provide feedback to engineering regarding part manufacturability, tooling strategy, or machining feasibility early in job release or quoting phases.
  • Interface with the Engineering Manager, machinists, quality team, and production leadership to coordinate program launch, troubleshooting, and continuous support.
  • Communicate program changes, machining risks, tooling constraints or machine limitations promptly and effectively.
  • Participate when required in new product introduction (NPI), reviews of drawings/specifications, and help ensure programming considerations are accounted for.
  • Ensure all programs meet customer specifications, tolerances, drawing requirements including GD&T, finish, aerospace/defense industry standards.
  • Maintain program library, ensure revision control and proper documentation of changes.
  • Operate in compliance with internal quality systems (e.g., AS9100) and, where applicable, with customer/regulatory requirements for aerospace/defense parts.
  • Ensure compliance with aerospace/defense regulatory requirements (AS9100, ITAR, customer-specific standards).
SECONDARY DUTIES AND RESPONSIBILITIES
  • Reports unsafe conditions to manager as well as all accidents and injuries immediately.
  • Assist other department and/or areas as requested by management or supervisor.
  • Follows all company policies and safety guidelines. Attends all required safety training.
SUPERVISORY RESPONSIBILITIES
This position does not oversee any personnel.

SKILLS/ EXPERIENCE
  • 3-5 years’ experience working in the precision machined components industry, preferably in a job shop environment.
  • Computer proficiency in MS Office includes, but is not limited to Excel, Word, PowerPoint.
  • 3-5 years’ experience working with CAD/CAM software (MasterCam, Vericut), programming mills and lathes
  • Experience working with machinists and the shop floor to validate programs and support first articles is strongly preferred.
  • Strong understanding of G-code, macro programming, machining fundamentals, tooling, workholding, and fixture design.
  • Ability to program for milling and turning operations including multi-axis (if applicable).
  • Competence reading and interpreting engineering drawings, GD&T, manufacturing specifications.
  • Simulation tool experience (e.g., Vericut) is a plus.
  • Familiarity with large part machining, heavy castings/forgings or large-format equipment is beneficial given Allied’s capabilities.
EDUCATION
High School diploma/ GED. Associates degree or a technical certification in manufacturing technology, mechanical engineering technology or equivalent is preferred. Prior direct experience may be substituted for degree.

PHYSICAL DEMANDS
Note: The physical demands described here are representative of those that must be met by an employee to perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

While performing the duties of this job, the employee should have the:
  • Ability to Use or operate a computer and other office productivity machinery, such as a copy machine, and computer printer etc.
  • Ability to walk or move to regularly move about inside the office or onto the facility.
  • Ability to see or detect, identify, recognize or Assess surroundings while in the office or facility areas
  • Ability to bend, turn and stoop occasionally
  • Ability to sit or be stationary for extended continuous periods of time
  • Ability to stand for occasional periods of time
  • Ability to occasionally lift and/or move up to 35 pounds
  • Ability to go up and down stairs.


WORK ENVIRONMENT
The work environment characteristics described here are representative of those an employee encounters while performing their job. While performing the duties of this job, the employee will spend approximately 70% (excluding breaks and meal periods) of time in an office environment and 30% of the time in the facility. When working in the facility it requires the use of personal protective equipment including (but not limited to) safety slip/ oil resistant shoes and safety glasses.

Allied Mechanical is an equal opportunity employer. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or mental disability, medical condition, pregnancy, genetic information, gender, sexual orientation, gender identity or expression, veteran status, or any other status protected under federal, state, or local law.

We encourage women, vets and those with disabilities to apply.

If you need reasonable accommodations in order to apply or need to discuss the physical/mental requirements of this job, contact us at 909-947-2723.

PLEASE DO NOT SUBMIT RESUMES IN IMAGE FORMATS (JPEG, PNG, Screenshots)!

Posted 2025-11-28

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