CNC Machinist II - 4/5-Axis Production & Prove-Out

Gribbins Insulation & Scaffolding; Indianapolis (IN); On-site; USD 48,000 - 72,000; Full time

Job summary

ISSI Engineering & Machining, a high-mix aerospace and precision shop, is seeking a CNC Machinist II to join our precision manufacturing team in Indianapolis, IN. You’ll work with Makino 4‑axis and 5‑axis centers, set up, prove out, and run production jobs including one‑offs and fixtures.

You will read complex drawings with GD&T, verify tooling and offsets, monitor processes, and collaborate with engineering, CAM, and quality.

Qualifications

• 4–5 years of CNC machining experience, including setup and operation of complex machining processes.
• Experience with 4-axis and 5-axis CNC machining centers.
• Experience performing first-time setups, machine prove-outs, and troubleshooting machining processes.
• Ability to read and interpret complex engineering drawings, GD&T requirements, and manufacturing documentation.
• Experience in aerospace, AS9100D, or similarly regulated environments preferred.

Responsibilities

• Set up, prove out, and operate Makino 4-axis and 5-axis machining centers on established production, expedited, and one-off work.
• Perform complex setups using precision fixtures, multiple work offsets, non-vise workholding, probing, and multi-sided machining.
• Safely prove out CAM-generated programs, verifying tooling, workholding, offsets, machine position, setup conditions, and clearances.
• Monitor and troubleshoot machining processes, including tooling, workholding, part movement, dimensional variation, surface finish, cutting conditions, setup repeatability, machine behavior, and program execution.
• Read and interpret complex engineering drawings and GD&T, perform detailed manual inspection, and recognize dimensional trends and potential process issues.
• Operate established Zeiss CMM programs, interpret inspection results, and work with CMM programming and quality when further evaluation is needed.
• Diagnose whether machining or dimensional issues are related to the setup, tooling, machine, programming, inspection, or other process variables, and work with the appropriate team to resolve them.
• Work closely with engineering and CAM programming to resolve manufacturing issues and provide practical shop-floor feedback to improve tooling, fixtures, programs, and processes.
• Serve as a technical resource for less-experienced machinists by providing hands-on guidance with setups, tooling, prove-out, inspection, and troubleshooting, while maintaining accurate setup, production, and inspection documentation.

Skills

CNC machining

4-axis machining

5-axis machining

setup and prove-out

GD&T interpretation

CMM programming

Troubleshooting

Teamwork

Mentoring

Education

High school diploma or equivalent

Tools

Zeiss CMM

Okuma lathes

Makino machining centers

DMG mill turn

Job description

ISSI Engineering & Machining, a high-mix aerospace and precision shop, is seeking a CNC Machinist II to join our precision manufacturing team in Indianapolis, IN. You’ll work with Makino 4‑axis and 5‑axis centers, set up, prove out, and run production jobs including one‑offs and fixtures.

You will read complex drawings with GD&T, verify tooling and offsets, monitor processes, and collaborate with engineering, CAM, and quality.