Career Area:
Operations
Job Description:
Your Work Shapes the World at Caterpillar Inc.
When you join Caterpillar, you're joining a global team who cares not just about the work we do – but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here – we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it.
CNC Machinist – Horizontal Milling Center
Location: South Milwaukee, WI
Shift: 2nd or 3rd Shift
Bonus: $2,000 Sign-On Bonus
Pay Progression:
• Step 1: $30.86/hr
• Step 2: $32.14/hr
• Step 3: $33.42/hr
• Shift Premium: +$1.00/hr for 2nd and 3rd shift
Job Summary
The Large Boring Bar Machinist is responsible for setting up and operating CNC horizontal milling centers and large boring mills to machine precision components for heavy equipment manufacturing. This role supports the production of large structural weldments, castings, and forgings using advanced machining techniques and equipment. The ideal candidate thrives in a high-precision, safety-driven manufacturing environment and demonstrates strong technical machining skills, blueprint interpretation, and attention to detail.
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 30, 2026 - November 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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