Senior CNC Mill Machinist (Aerospace, 4-5 Axis)

APM Manufacturing; Orange (CA); On-site; USD 48,000 - 62,000; Full time

Benefits offered by this job

Dental insurance

Employee assistance program

Flexible spending account

Health insurance

Health savings account

Life insurance

Paid time off

Professional development assistance

401 k with Employer Match

Tuition reimbursement

Vision insurance

Job summary

APM Manufacturing in Orange, CA, seeks a senior CNC Mill Machinist III to set up and run complex 4- and 5-axis milling operations, read aerospace drawings, and mentor junior machinists. This role requires 5–8+ years of milling experience in a precision environment.

You will perform first article and in-process inspections per AS9100 and customer specs, maintain tight tolerances, troubleshoot issues, and drive continuous improvements while ensuring compliance with aerospace quality and regulatory

Qualifications

• High school diploma or GED is required; technical degree or apprenticeship preferred.
• 5–8+ years milling experience in a precision manufacturing environment; aerospace experience strongly preferred.
• Advanced knowledge of CNC controls and GD&T.
• Ability to read engineering drawings and blueprints.
• Experience with first article inspections and AS9100 familiarity.

Responsibilities

• Independently set up, operate, and optimize complex CNC and multi-axis milling machines.
• Interpret complex engineering drawings, blueprints, and GD&T requirements.
• Develop setup strategies, select tooling, and design/modify fixtures as needed.
• Perform first article inspections (FAI), in-process, and final inspections per AS9100 and customer specifications.
• Hold tight tolerances (±.0002"-±.0005" typical in aerospace applications).
• Troubleshoot advanced machining, tooling, and process issues to improve efficiency and reduce scrap.
• Make program edits at the machine (G-code) and recommend process improvements.
• Collaborate with Manufacturing Engineering on process development and continuous improvement initiatives.
• Train and mentor Mill Machinist I and II team members.
• Ensure compliance with safety standards, quality systems, and regulatory requirements (e.g., ITAR if applicable).
• Maintain accurate production, inspection, and traceability documentation.

Skills

CNC controls

GD&T proficiency

Multi-axis machining

Troubleshooting

Precision measurement

Education

High school diploma or GED

Technical degree or apprenticeship preferred

Tools

Fanuc controls

Haas controls

Mazak controls

Job description

APM Manufacturing in Orange, CA, seeks a senior CNC Mill Machinist III to set up and run complex 4- and 5-axis milling operations, read aerospace drawings, and mentor junior machinists. This role requires 5–8+ years of milling experience in a precision environment.

You will perform first article and in-process inspections per AS9100 and customer specs, maintain tight tolerances, troubleshoot issues, and drive continuous improvements while ensuring compliance with aerospace quality and regulatory