CNC Mill Machinist - 1 Shift & 2 Shift

Allied Mech; Ontario (CA); On-site; USD 38,572 - 55,104; Full time

Benefits offered by this job

Medical, dental and vision insurance

401(k) with profit sharing

Paid time off (2–4 weeks)

9 paid holidays

Job summary

Allied Mechanical in Ontario, CA seeks an experienced CNC Mill Machinist to perform highly complex setups and operate multiple machine families. The role requires mastery of CNC machining, rigging, inspection, and problem‑solving, with mentorship responsibilities for other machinists.

The ideal candidate has 5–10 years in aerospace/machine shop environments, strong blueprint reading, and expertise in G-code.

Qualifications

• Minimum 5–10 years of experience operating/setting up mill machines in aerospace or machine shop environments.
• Expert blueprint reading and measurement skills (calipers, micrometers).
• Mastery of advanced setups, work holding, and tool selection decisions.
• Advanced rigging for oversized/ high‑risk components with proper safety.
• Strong understanding of G-code, program adjustments, and process optimization.

Responsibilities

• Plan, perform, and/or create safe, efficient setups for very complex or unique parts.
• Masterfully run multiple machine families, optimizing performance and cycle times.
• Lead troubleshooting on challenging machining or tooling issues.
• Collaborate with programming, engineering, and leadership on process improvements.
• Recommend tooling upgrades and machining strategy modifications.
• Troubleshoot machining issues and assist with root‑cause analysis.
• Perform advanced rigging and safe handling of large or irregular parts.
• Use overhead cranes and part flippers with expert competency.

Skills

Blueprint reading

G-code

Rigging

Laser inspection

Multi-machine operation

Measurement accuracy

Education

High School Diploma

Job description

CNC Mill Machinist - 1 Shift & 2 Shift (Ontario, CA)

ABOUT ALLIED MECHANICAL

Since 1951, Allied Mechanical (www.alliedmech.com) 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

Expected Hiring Range: $28-$40per hour base rate.

SUMMARY:

The Mill Machinist works independently and provides guidance to others. It is an advanced‑level machinist responsible for highly complex setups, machining large or unique components, developing work holding strategies, and mentoring others. This role requires mastery of CNC machining, rigging, inspection, and problem‑solving. Machinistemployees frequently lead technical initiatives and ensure safe, efficient machining practices across the shop.

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

• Plan, perform, and/or create safe, efficient setups for very complex or unique parts.
• Masterfully run multiple machine families, optimizing performance and cycle times.
• Lead troubleshooting on challenging machining or tooling issues.
• Collaborate with programming, engineering, and leadership on process improvements.
• Recommend tooling upgrades and machining strategy modifications.
• Troubleshoot machining issues and assist with root‑cause analysis.
• Perform advanced rigging and safe handling of large or irregular parts.
• Use overhead cranes and part flippers independently with expert competency.
• Mentor others on safe rigging techniques.
• Verify all dimensions and specifications using advanced inspection methods.
• Perform own laser inspection where required.
• Drive corrective actions related to quality deviations and scrap reduction.
• Train Machinist I & II employees across multiple machines and processes.
• Provide technical guidance on machining, rigging, safety, and best practices.
• Lead continuous improvement projects to increase safety, throughput, and quality.

SECONDARY DUTIES AND RESPONSIBILITIES

• Reports unsafe conditions to manager. Attend all required safety training.
• Assures that his/her area is safe and cleaned at all times.
• Assist other department and/or areas as requested by management or supervisor.
• Follows all company policies and safety guidelines. Reports all accidents & injuries immediately.

SUPERVISORY RESPONSIBILITIES

This position does not oversee any personnel.

SKILLS/ EXPERIENCE

• 5-10 years of experience operating/ setting up Mill machines in an aerospace or machine shop environment.
• Expert level in blueprint reading and measurement skills (calipers, micrometers).
• Mastery of advanced setups, work holding, and tool selection decisions.
• Advanced in rigging for asymmetrical, oversized, and high‑risk components (basket, chocker, bridle, vertical, U)
• Strong understanding of G-code, program adjustments, and process optimization.
• Ability to satisfactorily run 5-8+ different machine types/ families at an expert level.
• Able to perform or interpret advanced inspection (including laser inspection).

EDUCATION

Minimum of a High School Diploma/ GED or a combination of work experience and education will be considered. Certification courses in machining at a trade school are highly desirable.

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 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 continuously
• Ability to stand for prolonged periods of time up to the bulk of the shift
• Ability to occasionally lift and/or move up to 50 pounds
• Ability to go up/ down staircases and platforms
• Strong manual dexterity to use tools, reach into equipment and perform mechanical task.

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 0% (excluding breaks and meal periods) of time in an office environment and 100% 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, safety glasses, safety gloves as well as other PPE dependent on the work being performed.

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)!

This is a non-management position

This is a full time position