CNC Machinist Horizontal Mill – 2nd or 3rd Shift

Key Responsibilities

Set up and operate CNC horizontal milling centers and boring bar machines for large-scale machining

Machine large steel components including weldments, castings, forgings, and plates

Interpret manufacturing work instructions, blueprints, and operation sequences

Align parts using fixtures, shims, parallels, clamps, and workholding devices

Select and assemble appropriate tooling including boring bars, drills, taps, reamers, and milling cutters

Load, run, and verify CNC programs (G & M code) and conduct trial runs as needed

Adjust machine parameters such as feeds, speeds, and offsets to maintain tolerances

Perform precision machining operations (boring, facing, drilling, tapping, counterboring)

Conduct in-process inspection using micrometers, calipers, and other precision instruments

Edit CNC programs and make manual adjustments where required

Operate jib cranes and overhead cranes for material handling

Maintain a clean and safe work environment in alignment with safety standards

Support continuous improvement, quality initiatives, and team collaboration

Required Skills

1–3+ years of hands-on CNC machining experience

Experience with horizontal boring mills or large machining centers

Ability to read blueprints and technical drawings

Strong understanding of machine shop math (including basic trigonometry)

Experience using precision measurement tools (calipers, micrometers, gauges)

Knowledge of G-code/M-code programming fundamentals

Understanding of machining processes and terminology

Demonstrated commitment to workplace safety and quality standards

Preferred Skills

Experience machining large steel structures or heavy equipment components

Familiarity with Fanuc and/or Siemens CNC controls

Experience with tight tolerance machining on large parts

Prior experience in heavy industrial or OEM manufacturing environments

Crane operation or rigging experience

Call to Action

If you’re a skilled CNC machinist with experience in large-part machining, horizontal milling, or boring bar operations, this is your opportunity to make a meaningful impact in world-class manufacturing. At our South Milwaukee facility, you won’t just machine parts — you’ll help produce critical components that support some of the largest and most powerful mining machines in the world, including Cat® Electric Rope Shovels (ERS). The work is massive in scale and complexity, requiring precision, craftsmanship, and a commitment to quality at every step. From machining large steel weldments, castings, and forgings to working with advanced CNC equipment and precision tooling, your expertise will directly contribute to products that stand apart in the heavy equipment industry. Join a team where your machining skills matter, your work has visible impact, and your career can keep growing.

Apply today and help build what matters.

Summary Pay Range:

$29.67 - $37.09

Compensation and benefits offered may vary depending on multiple individualized factors, job level, market location, job-related knowledge, skills, individual performance and experience. Please note that salary is only one component of total compensation at Caterpillar.

Benefits:

Subject to plan eligibility, terms, and guidelines. This is a summary list of benefits.

Medical, dental, and vision benefits*

Paid time off plan (Vacation, Holidays, Volunteer, etc.)*

401(k) savings plans*

Health Savings Account (HSA)*

Flexible Spending Accounts (FSAs)*

Health Lifestyle Programs*

Employee Assistance Program*

Voluntary Benefits and Employee Discounts*

Career Development*

Incentive bonus*

Disability benefits

Life Insurance

Parental leave

Adoption benefits

Tuition Reimbursement

* These benefits also apply to part-time employees

Posting Dates:

October 5, 2026 - October 29, 2026

Any offer of employment is conditioned upon the successful completion of a drug screen.

Caterpillar is an Equal Opportunity Employer, Including Veterans and Individuals with Disabilities. Qualified applicants of any age are encouraged to apply.

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