CNC Machinist - Level I, II, & III

Bay Cast Technologies LLC; Bay City (MI); On-site; USD 42,000 - 65,000; Full time

Job summary

Bay Cast Technologies LLC in Bay City, Michigan is seeking CNC Machinists at levels I–III to setup, operate, and optimize large-format machining operations. Responsibilities include loading materials, verifying offsets, performing inspections, and adhering to strict tolerances across multiple machine styles.

Ideal candidates have experience with G & M code, GD&T interpretation, and reading engineering drawings. Opportunities span entry to advanced level roles with extensive programming support.

Qualifications

• Experience reading manufacturing drawings.
• Knowledge of G & M code.
• Ability to set up, operate, troubleshoot machines.
• Experience with large-format parts is a plus.

Responsibilities

• Operate CNC milling machines and lathes for large-format parts.
• Perform setups and tool changes for different levels.
• Conduct in-process inspections and document results.
• Collaborate with programmers and engineering to optimize processes.

Skills

G & M code

GD&T interpretation

Read drawings

Manual machining

Large-format part machining

Tools

Heidenhain controllers

Siemens controllers

Fanuc controllers

CNC milling machines

Vertical/horizontal milling

Job description

About this position

Description:

We are exploding with new and returning work — and we’re looking to add CNC Machinists at all experience levels to support continued growth. Located in Bay City, Michigan, we machine large, precision components for aerospace, defense, energy, and industrial customers.

This is a large-format machining environment, not repetitive small-part production. We offer a stable workload, strong programming support, and opportunities to grow your skills as demand continues to increase.

Whether you’re early in your CNC career or a seasoned Level III machinist who thrives on complex setups and problem-solving, we want to talk to you.

What You’ll Do

(Duties vary based on skill level and experience)

CNC Machinist – Level I

Operate the following styles of milling machines

• CNC – Small Gantry Style 3-Axis (101 inch X 138 inch)
• CNC – Medium 3-Axis Vertical Milling Centers (38 inch X 98 inch)
• MANUAL – Gantry Planer Mill (128 inch X 500 inch)

- Load materials and position workpieces correctly

- Set and verify work and tool offsets using the following traditional methods

• Edge Finder
• Paper/Shim
• 1-2-3 Block
• Test Indicator

- Perform in-process inspections using calipers, micrometers, and indicators

- Monitor cutting conditions and report tool wear or machine issues

- Follow drawing, job travelers, and standard work instructions

- Maintain clean and safe work areas

CNC Machinist – Level II

Operate the following styles of milling machines or lathes

• CNC – Medium 3-Axis Vertical Milling Centers (38 inch X 98 inch)
• CNC – Horizonal Boring Mill 3-Axis (157 inch X 315 inch)
• CNC – Medium Gantry Style 3+2 Axis (167 inch X 448 inch)
• CNC – Vertical Turret Lathe (225 inch Swing)

- Perform moderate-complexity setups, including large-part setups

- Machine surface plates, frames, and commercial-grade components to +/- 0.005in tolerances

- Set and verify work/tool offsets using the following traditional methods

• Edge Finder
• Paper/Shim
• 1-2-3 Block
• Test Indicator

- Run established programs; perform minor G code edits for speeds, feeds, or offsets

- Perform and document in-process inspections

- Communicate process or program concerns to Level III machinists or programming

CNC Machinist – Level III

Operate the following styles of milling machines or lathes

• CNC – Medium Gantry Style 3+2 Axis (167 inch X 448 inch)
• CNC – Large Gantry Style 3+2/Full 5-Axis (228 inch X 659 inch)
• CNC – Vertical Turret Lathe (225 inch Swing)
• CNC – Vertical Turret Lathe with C/Y-Axis Live Tooling (225 inch Swing)

- Perform complex setups on large-scale machined components

- Machine aerospace and complex commercial grade components to +/- 0.001in tolerances

- Set and verify work/tool offsets using the following traditional methods

• Edge Finder
• Paper/Shim
• 1-2-3 Block
• Test Indicator

- Edit and troubleshoot CNC programs independently

- Optimize and communicate machining strategies for efficiency, accuracy, and tool life

- Solve complex machining, fixturing, and quality issues

- Mentor and support Level I & II machinists

- Work closely with programmers and engineering as needed

Extensive programming support is provided — machinists work from pre-established programs and setup sheets.

Requirements:

• Level I: Entry-level or 1+ years CNC experience
• Level II: 2–5 years job shop CNC experience
• Level III: 5+ years advanced CNC machining experience
• Ability to read and interpret manufacturing drawing and job instructions
• Working knowledge of G & M Code
• Ability to set up, operate, troubleshoot, and change tools
• Experience machining large-scale or large-format parts is a strong plus
• Strong GD&T interpretation skills preferred (Level II & III)
• Heidenhain, Siemens, and Fanuc Controllers
• Manual machining experience is a plus