Milling Machinist 4th Axis

The aerospace industry demands the highest levels of quality. At Colinear Aerospace, we take pride in our reputation for manufacturing products of unparalleled quality by maintaining strict operating and engineering standards. We focus on constantly improving our equipment and qualifications. We are AS9100 : Rev D and ISO 9001 : 2015 certified.

This role requires a deep understanding of multi-axis milling, tight tolerance machining, and the ability to interpret complex blueprints and GD&T specifications. The machinist works closely with programmers, engineers, and quality inspectors in an AS9100-certified environment.

Key Responsibilities

• Set up and operate CNC mills with 4th-axis capability.
• Read and interpret engineering drawings, customer specifications, and GD&T callouts.
• Perform offsets, tool changes, and part inspections throughout the machining process.
• Verify parts using precision measurement tools (micrometers, dial bore gages, indicators, etc.).
• Monitor machining operations and make real-time adjustments to ensure part conformance.
• Machine materials such as titanium, Inconel, stainless steel, and aluminum.
• Perform in-process checks and support first article inspections (FAIs).
• Maintain detailed and accurate documentation in accordance with AS9100 standards.
• Collaborate with programmers and engineers to improve tooling and cycle times.
• Keep the work area clean, organized, and compliant with safety standards.
• Monitor machine maintenance and conduct preventative maintenance on a regular basis.

Goals

90 day objective

• Complete setups and first parts within 20% of quoted setup time.
• Maintain >90% first-pass yield on parts produced by reducing scrap/rework.
• Maintain an average cycle time within ±10% of quoted for all repeat jobs.
• Complete training and certification for forklift and saw.

1 year objectives

• Maintain >98% accuracy on critical dimensions across all produced parts.
• Assess and implement 1 SMED technique to assist in reducing job setup time.

Required Qualifications

• 3–5+ years of experience operating CNC mills with 4th-axis functions.
• Strong understanding of G-code, feeds and speeds, and multi-axis machining strategy.
• Proficiency with precision measurement instruments and inspection practices.
• Experience in the aerospace or high-precision manufacturing industry.
• Ability to read and understand complex blueprints and GD&T.
• Familiarity with AS9100 procedures and documentation practices.
• Ability to work independently and troubleshoot machining issues on the fly.

Additional Benefits:

• 401 (K)
• Health Insurance
• Dental Insurance
• Vision Insurance
• Paid time off

Colinear Aerospace. is an equal opportunity employer and prohibits discrimination based on race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic. We are committed to providing a fair and inclusive workplace for all employees and applicants.