Milling Machinist 4th Axis

At a Glance

Company:  Colinear Aerospace

Location:

Sparta, New Jersey
Job Type:  Full-Time
Pay Range:  Competitive / DOE

Shift:  Day Shift
Overtime:  As needed
Experience Level:  Mid–Senior
Industry:  Aerospace
Quality System:  AS9100 Rev D | ISO 9001:2015

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- Why This Role Exists

Colinear Aerospace continues to expand its aerospace machining capacity and requires experienced machinists who can independently set up and run  4th-axis milling work  to tight tolerances.

This role is critical to maintaining high first-pass yield, meeting quoted cycle times, and supporting first-article and repeat production in a regulated AS9100 environment.

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- The Work You’ll Be Doing

In this role, you will:

Set up and operate CNC milling machines with  4th-axis capability

Perform complete job setups, including work holding, tooling, and offsets

Machine complex aerospace components to tight tolerances

Read and interpret complex blueprints, customer specifications, and GD&T

Make real-time adjustments to feeds, speeds, and offsets to ensure part conformance

Perform in-process inspections and support  First Article Inspections (FAIs)

Collaborate with programmers, engineers, and quality to improve cycle times and tooling

Maintain accurate documentation in compliance with AS9100 requirements

Keep machines and work areas clean, organized, and safety-compliant

Perform basic preventative maintenance and monitor machine condition

This is a  hands-on machining role  where setup quality and attention to detail matter.

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- Machines, Controls & Inspection

You’ll work with equipment and tools such as:

Machines:  CNC Mills with 4th-axis capability
Controls:  (Fanuc / Haas / similar – depending on cell)
Inspection Tools:  Micrometers, dial bore gages, indicators, and other precision measuring equipment
Quality System:  AS9100-compliant documentation and inspection processes

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- Materials You’ll Work With

Titanium

Inconel

Stainless Steel

Aluminum

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- What We’re Looking For

Required:

3–5+ years of experience operating CNC mills with 4th-axis capability

Strong understanding of CNC setups, offsets, and tooling

Ability to read and interpret complex blueprints and GD&T

Experience machining aerospace or other high-precision components

Proficiency with precision measurement tools and inspection practices

Familiarity with AS9100 procedures and documentation

Ability to work independently and troubleshoot machining issues

Preferred (Not Required):

Experience optimizing cycle times and tooling strategies

Exposure to SMED or other setup reduction methodologies

CAM programming experience

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- 90-Day & 1-Year Success Expectations

First 90 Days

Complete setups and first parts within  20% of quoted setup time

Maintain  >90% first-pass yield  by minimizing scrap and rework

Hold repeat job cycle times within  ±10% of quoted cycle time

Complete forklift and saw training/certifications

1-Year Goals

Maintain  >98% accuracy  on critical dimensions

Assess and implement at least  one SMED technique  to reduce setup time

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- Why Machinists Like Working Here

Aerospace work where quality and precision actually matter

Clean, organized AS9100-certified facility

Strong collaboration between machinists, programmers, and engineering

Stable workload and realistic production expectations

A shop culture that respects skilled tradespeople

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- Pay & Benefits

Competitive pay based on experience

401(k)

Medical, dental, and vision insurance

Paid time off

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- Apply

Interested machinists can apply directly through  hire

CNC .

Apply Now  or  Save This Job  to come back later.