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Machine Operator Trainee Jobs in Saint Louis, MO

Moore

Envelope Machine Adjuster

Saint Louis, MO · On-site

Assists in adjuster/operator training. Trainees will assist in performing changes, adjustments, and repairs on production machines. Examines, tests, and measures of product from assigned equipment.

Clean Harbors

Driver Class B Trainee

Saint Charles, MO · On-site

$14.90 - $34.62/hr

... machines, pick up containerized hazardous waste, and sell products/services in a defined route ... Safely observe all corporate operating guidelines and procedures * Observe all company ...

Clean Harbors

Driver Class B Trainee

Saint Charles, MO · On-site

$22.50/hr

... machines, pick up containerized hazardous waste, and sell products/services in a defined route ... Safely observe all corporate operating guidelines and procedures * Observe all company ...

Clean Harbors

Driver Class B Trainee

Saint Charles, MO · On-site

$22.50/hr

... machines, pick up containerized hazardous waste, and sell products/services in a defined route ... Safely observe all corporate operating guidelines and procedures * Observe all company ...

Buckle

Not Finding Your Fit? Apply Here!

Des Peres, MO · On-site

... Trainee. * We hire our Store, Area and District Managers from within, the Management Training ... Complete Guest Transactions by operating the Point of Sales * Assist operations manager as needed.

Buckle

Not Finding Your Fit? Apply Here!

Des Peres, MO · On-site

... Trainee. * We hire our Store, Area and District Managers from within, the Management Training ... Complete Guest Transactions by operating the Point of Sales * Assist operations manager as needed.

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All JobsMachine Operator JobsMachine Operator Trainee JobsMachine Operator Trainee Jobs in Saint Louis, MO

Machine Operator Trainee information

See Saint Louis, MO salary details

$11

$17

$22

How much do machine operator trainee jobs pay per hour?

As of Sep 1, 2026, the average hourly pay for machine operator trainee in Saint Louis, MO is $17.68, according to ZipRecruiter salary data. Most workers in this role earn between $15.91 and $18.94 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a machine operator trainee?

To thrive as a Machine Operator Trainee, you need basic mechanical aptitude, attention to detail, and a high school diploma or equivalent. Familiarity with manufacturing equipment, safety protocols, and basic computer systems or programmable logic controllers (PLCs) is often required. Strong problem-solving skills, teamwork, and a willingness to learn help trainees excel in fast-paced production environments. These abilities are crucial for ensuring operational efficiency, minimizing downtime, and maintaining workplace safety.

What are some common challenges machine operator trainees face during their initial months on the job?

Machine Operator Trainees often encounter challenges such as learning to operate complex machinery safely, adapting to fast-paced production environments, and mastering quality control procedures. Adjusting to shift work and understanding the importance of teamwork in a manufacturing setting can also take time. However, most employers provide hands-on training and mentorship to support new trainees as they build confidence and proficiency in their roles.

What is the difference between Machine Operator Trainee vs Machine Operator?

AspectMachine Operator TraineeMachine Operator
CredentialsMay require a high school diploma or equivalent; training provided on the jobTypically requires relevant certifications or licenses; experience preferred
Work EnvironmentTraining environment, supervised, learning phaseFull operational environment, responsible for machine operation
Job ResponsibilitiesAssisting and learning machine operation tasksOperating machinery independently, ensuring safety and efficiency

The main difference is that a Machine Operator Trainee is in a learning phase, often supervised and still acquiring skills, while a Machine Operator is fully responsible for operating machinery independently. Trainees focus on gaining experience, whereas operators perform the job routinely with established skills.

How to become a machine operator trainee with no experience?

To become a machine operator trainee with no experience, focus on gaining basic technical skills through vocational training or community college courses, and highlight your willingness to learn and work in a manufacturing environment. Some employers offer on-the-job training for entry-level candidates, so applying to companies that provide training programs can also be effective.

How to get started as a machine operator trainee?

To start as a machine operator trainee, you typically need a high school diploma or equivalent and basic technical skills. Employers often provide on-the-job training, but having familiarity with machinery, safety protocols, and the ability to follow instructions can be beneficial. Some positions may require certifications in equipment operation or safety standards.

What do machine operator trainees do?

Machine operator trainees learn to operate and monitor manufacturing equipment, such as presses, lathes, or conveyor systems. They gain skills in safety procedures, quality control, and troubleshooting under supervision to prepare for full-time roles as machine operators.

What are the most commonly searched types of Machine Operator jobs in Saint Louis, MO?

The most popular types of Machine Operator jobs in Saint Louis, MO are:

What cities near Saint Louis, MO are hiring for Machine Operator Trainee jobs?

Cities near Saint Louis, MO with the most Machine Operator Trainee job openings:

Machine Operator Trainee jobs near you
Infographic showing various Machine Operator Trainee job openings in Saint Louis, MO as of August 2026, with employment types broken down into 50% Full Time, 47% Part Time, 2% Contract, and 1% Nights. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $36,776 per year, or $17.7 per hour.

Envelope Machine Adjuster

Saint Louis, MO • On-site

Moore
See more jobs at Mooreexternal

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 9 days ago

Job description

Moore is a data-driven constituent experience management (CXM) company achieving accelerated growth for clients through integrated supporter experiences across all platforms, channels and devices. We are an innovation-led company that is the largest data, media, and marketing company in North America serving the purpose-driven industry with clients across education, association, political and commercial sectors.


Job Summary:
The Envelope Machine Adjuster ensures the smooth operation of the production shift by setting up and operating large machinery, performing size changes, organizing workflow, inspecting product for accuracy, completing required paperwork, and executing other duties as assigned by the Envelope Manager.

Duties/Responsibilities:
Set up and adjust machine and equipment for safe and efficient operation in the production process to meet work order specifications. This includes the start-up, operation, and adjustment to proper parameters involving close tolerances, maintenance, troubleshooting, and cleaning of equipment.
Reviews job tickets to determine tools, parts and materials necessary for machine changes and/or adjustments.
Performs both standard and special machine adjustments to meet job specifications.
Troubleshoots problems, repairs/replaces damaged and worn machine components.
Assists in adjuster/operator training.
Trainees will assist in performing changes, adjustments, and repairs on production machines.
Examines, tests, and measures of product from assigned equipment.
Examines product defects and ensures quality processes are followed.
Change window rolls.
Analyzes mechanical issues on assigned equipment and takes corrective action.
Performs preventative maintenance inspections and ensures consistent quality
production.
Minimizes waste by ensuring that all waste is properly segregated, weighed, recorded, and placed in the proper waste container.
Assist machine operator in maintaining quality control and production requirements.
Provides coverage for machine operators if necessary.
Notifies shift supervisor of recurring equipment issues and any correction action taken.
Maintains a hazard-free, cleaning machine and work area to include sweeping, removing waste, etc.
Performs other duties as required.

Communication Skills:
Ability to reason and perform basic math.
Ability to read and communicate effectively-both verbally and in writing.

Physical Requirements:
Minimal travel anticipated; may include auto and air travel.
Must be able to work under stressful conditions, such as meeting time-sensitive deadlines.
Loud work environment-hearing protection is required.

Heavy lifting is required:

o Occasionally lift over 100 lbs
o Frequently lift 50+ lbs.
o Constantly lift 20 lbs.
o Push/pull between 10-100 lbs.

Work is repetitive in nature.
Must possess reasonable decision-making skills to determine when machinery should be shut down due to issues.
May be required to operate a pallet jack or forklift.

Education & Experience
High School Diploma or GED required.
3-5 years of previous experience preferred.

Workplace Hazards
Minor chemical splash hazard during cleaning.
Slight risks of burns, chemical splashes, electrical shock, and impact hazards.
Exposure paper dust, minor cuts, punctures, and abrasions.
Minor risk of repetitive motion injuries.
May be subject to extreme cold, heat, and wet or humid environments.
Exposure to fumes, dust, odors, and gases.

Work Schedule: 12-Hour Shift

Benefits:
401(k) matching
Dental Insurance
Health insurance
Paid time off.
Vision insurance

Pay Range: $19.00 -$35

Location: Saint Louis, MO

Moore Company participates in committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Moore Company is also committed to compliance with all fair employment practices regarding citizenship and immigration status.

Moore Company participates in the E-Verify program. Must be authorized to work in the United States and successfully pass a comprehensive criminal background investigation.

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