Machine Operator - Machining Center Operator

O'Neal Manufacturing Services, LLC; Indianapolis (IN); On-site; USD 38,000 - 52,000; Full time

Job summary

O’Neal Manufacturing Services in Indianapolis, IN is seeking a Machine Operator - Machining Center Operator. The role involves safe operation, setup, and maintenance of CNC vertical, horizontal, and multi-axis centers.

You will set up vises, fixtures, and tooling, load steel parts, and execute programmed operations to spec. Candidate will perform in-process and final quality inspections with calipers, micrometers, and go/no-go gauges, ensuring parts meet engineering drawings.

Qualifications

• High School Diploma or equivalent is required.
• Basic critical thinking and strong attention to detail are essential.
• Must be able to read and interpret simple blueprints.
• Proficiency with hand tools and measuring devices is required.
• Ability to operate forklifts and cranes and maintain certifications.
• Capable of setting up and operating CNC machining centers.

Responsibilities

• Follow safety policies to maintain a safe work environment.
• Set up and operate CNC machining centers, including tooling changes.
• Load parts, run programs, and monitor machine performance for accuracy.
• Perform in-process and final quality inspections using calipers, micrometers, and go/no-go gauges.
• Maintain a clean, organized work area and support general duties.

Skills

Attention to detail

Critical thinking

English communication

Blueprint reading

Hand tools

Measuring tools

Quality inspections

Machining center setup

Education

High School Diploma or equivalent

Tools

Forklifts

Cranes

Job description

Machine Operator - Machining Center Operator

Job Category: Warehouse

Requisition Number: MACHI011542

• Posted : August 17, 2026
• Full-Time
• On-site

Locations

Showing 1 location

Indianapolis, IN 46236, USA

Description

Build A Career That’s Made to Last.

O’Neal Manufacturing Services is one of the largest family-owned metal fabrication companies in the United States. For over 100 years, we’ve built more than just metal – we’ve built trust, careers, and lasting relationships. We are committed to helping every team member grow, learn, and achieve more. Let’s Build Things – Together.

Position: Machine Operator - Machining Center Operator

Position Summary: The Machining Center Operator is responsible for the safe operation, set-up, and routine maintenance of CNC vertical, horizontal, and multi-axis machining centers (Haas, Toyoda, Wele, Mazak). The Operator sets up vises, fixtures, and tooling; loads steel components onto machine tables; and executes pre-programmed machining center operations including milling, drilling, tapping, and boring. The operator monitors machine performance throughout the production process, making adjustments as needed to ensure parts are manufactured accurately and efficiently according to specifications. The operator is responsible for performing in-process and final quality inspections using precision measuring instruments such as calipers, micrometers, and go/no-go gauges to verify conformance to engineering drawings and quality requirements.

Successful candidates are detail-oriented, safety-focused, and committed to maintaining efficient production while delivering high-quality products.

Essential Duties and Responsibilities

• Safety Commitment:
• Follow all safety policies, procedures, and guidelines to maintain a safe work environment.
• Machine Operation:
• Setup and operate machines, including adjusting or replacing expendable tooling, guides, jigs, and fixtures.
• Operate various machines such as angle line machines, bevellers, saws, shears, oxy or plasma burners, laser cutters, rolling machines, flattening presses, shot blasters, welders (manual and robotic), press brakes, machining centers, lathes, and tube/custom lasers.
• Quality and Accuracy:
• Ensure error-free work for internal and external customers.
• Follow established processes to support safety and quality programs.
• General Duties:
• Maintain a clean and organized work area.
• Perform other duties as assigned.

Qualifications and Skills

• High School Diploma or equivalent.
• Basic critical thinking skills and strong attention to detail.
• Ability to operate forklifts and cranes. Must maintain certifications for required equipment.
• Ability to read and interpret simple blueprints.
• Proficiency in using hand tools (hammer, pliers, screwdriver, wrench, drill, grinder, bander).
• Ability to use measuring tools such as tape measure, box calipers, slide dial calipers, and micrometers.
• Ability to convert fractions to decimals and metric to English measurements.
• Ability to produce high-quality work.
• Capable of setting up and operating one or more processing machines.
• Ability to speak, write, and comprehend conversational English.

Physical Requirements

• Ability to stand and walk for prolonged periods, including walking 2-5 miles per shift.
• Ability to bend, sit, stand, twist, and stoop repeatedly for extended periods.
• Ability to lift and carry items weighing 25lbs – 50lbs from floor to waist and front carry up to 25lbs – 50lbs, repeatedly per shift.
• Ability to reach overhead, squat, kneel, and climb short ladders or steps.
• Ability to maintain coordination of hand and finger movements to grasp and manipulate objects with precision.
• Ability to read labels, follow safety and standard operating procedures, and communicate effectively in an industrial environment.
• 20/30 vision with the use of corrective lenses.
• Subject to environmental conditions that occur indoors and outdoors which include, but are not limited to:
• Exposure to changing temperatures, loud noises, and vibration from use of equipment.
• Hazards: proximity to moving mechanical parts, electrical current, exposure to high heat, and exposure to chemicals.
• Atmospheric conditions: fumes, odors, dust, mist, gas, or poor ventilation that may affect the respiratory system or skin.
• Oils: air and/or skin exposure to oils and other cutting fluids.

Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions of this position. Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities. This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.

Qualifications

Behaviors

Preferred

Dedicated

Devoted to a task or purpose with loyalty or integrity

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities

This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.