Senior CNC Mill Machinist – Aerospace Precision (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 is seeking a senior CNC Mill Machinist III to lead complex CNC/multi-axis milling setups and advanced troubleshooting for aerospace components.

You will interpret tight GD&T drawings, develop tooling/fixtures, perform FAI and in-process inspections, and edit G-code. Mentorship of junior machinists and adherence to ITAR, safety, and quality standards are essential.

Qualifications

• High school diploma or GED required; technical degree or apprenticeship preferred.
• 5–8+ years milling experience in a precision manufacturing environment; aerospace experience strongly preferred.

Responsibilities

• Independently set up, operate, and optimize complex CNC and/or 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 in accordance with 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.
• Advanced knowledge of CNC controls (e.g., Fanuc, Haas, Mazak).
• Strong proficiency in GD&T and complex blueprint interpretation.
• Experience with multi-axis machining (4-axis/5-axis preferred).
• Demonstrated ability to troubleshoot and optimize machining processes.
• High level of proficiency with precision measurement tools and inspection techniques.

Skills

GD&T

Blueprint interpretation

Multi-axis milling

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 is seeking a senior CNC Mill Machinist III to lead complex CNC/multi-axis milling setups and advanced troubleshooting for aerospace components.

You will interpret tight GD&T drawings, develop tooling/fixtures, perform FAI and in-process inspections, and edit G-code. Mentorship of junior machinists and adherence to ITAR, safety, and quality standards are essential.