Milling Machinist 4th Axis

Colinear Aerospace; Sparta Township (NJ); On-site; USD 50,000 - 70,000; Full time

Benefits offered by this job

401(k)

Medical, dental, and vision insurance

Paid time off

Job summary

Colinear Aerospace in Sparta, New Jersey is seeking skilled machinists to set up and operate CNC milling machines with 4th-axis capability. The role focuses on maintaining high quality and precision in machining aerospace components. Candidates should have 3–5 years of experience, with strong skills in CNC setups and the ability to interpret blueprints. Benefits include competitive pay, 401(k), and medical insurance. This is a hands-on position in a clean, organized facility prioritizing precision and quality.

Qualifications

• 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.

Responsibilities

• Set up and operate CNC milling machines with 4th-axis capability.
• Perform complete job setups, including workholding, tooling, and offsets.
• Collaborate with programmers, engineers, and quality to improve cycle times.

Skills

CNC milling operation

Blueprint interpretation

Inspection practices

Troubleshooting

Tools

CNC Mills

Precision measuring tools

Job description

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 workholding, 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 hireCNC.

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