Machine Shop Jobs in O Fallon, MO (NOW HIRING)

Position Title: Machinist

Department: Machine Shop

Location: Fenton, MO

Reports To: Production Supervisor – Machine Shop

Classification: Hourly – Non-Exempt

Schedule: 2nd Shift: 3:15PM-1:15AM Monday-Thursday OR Weekend Shift 5AM-5PM Friday-Sunday

We're looking for an experienced CNC Machinist – Setup/Operator who takes pride in producing high-quality work, solving machining challenges, and running complex setups with confidence. If you enjoy working with precision equipment, reading blueprints, and making quality parts in a clean, team-oriented environment, we'd love to meet you.

Why Join Control Devices?

• Climate-controlled, air-conditioned manufacturing facility
• Competitive pay based on experience
• Modern CNC equipment and challenging precision work
• Collaborative team environment where craftsmanship is valued
• Comprehensive benefits including Medical, Dental, Vision, 401(k), Paid Time Off, Company paid Life Insurance, Short & Long-Term Disability, and more!
• Safety shoe and prescription safety glasses reimbursement
• Casual work environment
• Build products that serve critical industries across the globe

What You'll Do

As a CNC Setup/Operator, you'll be responsible for setting up, operating, troubleshooting, and producing precision-machined components while maintaining the highest quality standards.

Responsibilities include:

• Perform complete machine setups with minimal supervision
• Set up, operate, adjust, and troubleshoot CNC lathes
• Read and interpret blueprints, engineering drawings, and setup documentation
• Work with G-Code and M-Code programming
• Set tooling, offsets, speeds, and feeds
• Perform in-process inspections using precision measuring equipment
• Make tool wear adjustments and minor program edits
• Troubleshoot machining and quality issues
• Complete production documentation accurately
• Help train and support less experienced operators
• Maintain a safe and organized work environment

What We're Looking For

We're looking for machinists who enjoy precision work and have the experience to hit the ground running.

Required Qualifications

• 3+ years of CNC lathe setup experience
• Experience performing complete setups on one or more of the following:
• Haas
• Ganesh
• Index
• Okuma
• Citizen Swiss Lathes
• Strong blueprint reading skills
• Working knowledge of G-Code and M-Code
• Experience using precision measuring instruments such as calipers, micrometers, and bore gauges
• Strong mechanical aptitude and troubleshooting skills
• Ability to work independently while maintaining exceptional quality standards

Preferred Experience

• Swiss-style CNC lathe experience
• Experience with multiple CNC machine brands
• Minor program editing and process optimization
• Mentoring or training other machinists
• Continuous improvement mindset with strong attention to detail

Physical Requirements

• Lift up to 35 pounds regularly
• Stand for extended periods throughout the shift
• Perform repetitive bending, reaching, and lifting
• Wear required PPE including safety glasses, steel-toe shoes, and hearing protection

About Control Devices

Control Devices (CDI), an HBM Holdings company headquartered in Greater St. Louis, is a leading designer and manufacturer of engineered flow control solutions in the compressed gas, compressed air, oil & gas, and liquid controls markets. The company offers custom valves and flow control solutions for customers who place a premium on quality. Control Devices leverages operational excellence and flow control expertise to deliver trustworthy products and innovative solutions that protect life and our planet.

CDI offers competitive compensation, comprehensive benefits, paid time off, safety shoe and prescription safety glasses reimbursement, a casual work environment, and a strong 401(k) retirement plan.

Control Devices, LLC is an Equal Opportunity Employer. We provide equal employment opportunities to all employees and applicants without regard to race, color, religion, sex, age, national origin, disability, protected veteran status, sexual orientation, gender identity or expression, or any other protected characteristic under applicable federal, state, or local laws.