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Operator Trainee Jobs in Missouri (NOW HIRING)

Republic Services

Driver Trainee

Reeds Spring, MO · On-site

A Driver Trainee will be trained by Republic Services to obtain a commercial driver's license (CDL) ... greater operating efficiencies across the company while maintaining day-to-day operational ...

Republic Services

Driver Trainee

Reeds Spring, MO · On-site

A Driver Trainee will be trained by Republic Services to obtain a commercial driver's license (CDL) ... greater operating efficiencies across the company while maintaining day-to-day operational ...

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Showing results 21-40

All JobsOperator JobsOperator Trainee JobsOperator Trainee Jobs in Missouri

Operator Trainee information

See Missouri salary details

$23.9K

$40.8K

$59.6K

How much do operator trainee jobs pay per year?

As of Aug 13, 2026, the average yearly pay for operator trainee in Missouri is $40,832.00, according to ZipRecruiter salary data. Most workers in this role earn between $31,000.00 and $47,800.00 per year, depending on experience, location, and employer.

What are some common challenges faced by operator trainees during their initial training period?

Operator Trainees often encounter challenges such as adapting to shift work, mastering complex machinery, and quickly learning strict safety protocols. The fast-paced environment can be demanding, requiring attention to detail and the ability to follow precise instructions. Additionally, trainees must develop effective communication skills to collaborate with experienced operators and supervisors, ensuring smooth transitions and minimizing errors. Overcoming these challenges is essential for building a strong foundation for future advancement within the organization.

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

To thrive as an Operator Trainee, you need a basic understanding of industrial processes, mechanical aptitude, and often a high school diploma or equivalent. Familiarity with safety protocols, control systems, and machinery operation—sometimes supported by OSHA certifications or technical training—is typically required. Strong attention to detail, teamwork, and problem-solving skills help trainees adapt quickly and handle operational challenges. These skills are crucial for ensuring safe, efficient, and reliable plant or equipment operations while minimizing downtime and incidents.

What is the difference between Operator Trainee vs Equipment Operator?

AspectOperator TraineeEquipment Operator
CredentialsBasic certifications, on-the-job trainingValid driver’s license, specialized certifications often required
Work EnvironmentTraining sites, construction sites, manufacturing plantsActive job sites, industrial facilities, construction zones
Employer & Industry UsageTraining programs, entry-level positions in construction, manufacturingOperational roles in construction, mining, manufacturing
Search & Comparison IntentLearning about entry-level roles, training programsSeeking job opportunities, skills required for operating equipment

In summary, an Operator Trainee is an entry-level position focused on training and gaining experience, often requiring minimal certifications. An Equipment Operator is a fully qualified worker responsible for operating machinery in various industrial settings. The trainee role prepares individuals for the more skilled, operational position of Equipment Operator.

What is an operator trainee?

Operator trainees are entry-level employees who are undergoing training to learn how to operate machinery, equipment, or processes in various industries such as manufacturing, utilities, or transportation. They work under the supervision of experienced operators or trainers, gaining hands-on experience and developing the necessary skills for safe and efficient operation. The training period prepares them for more advanced roles and helps ensure they understand company procedures, safety protocols, and quality standards.
What are the most commonly searched types of Operator jobs in Missouri? The most popular types of Operator jobs in Missouri are:
What are popular job titles related to Operator Trainee jobs in Missouri? For Operator Trainee jobs in Missouri, the most frequently searched job titles are:
What job categories do people searching Operator Trainee jobs in Missouri look for? The top searched job categories for Operator Trainee jobs in Missouri are:
What cities in Missouri are hiring for Operator Trainee jobs? Cities in Missouri with the most Operator Trainee job openings:
Operator Trainee jobs near you
Infographic showing various Operator Trainee job openings in Missouri as of August 2026, with employment types broken down into 54% Full Time, 44% Part Time, 1% Contract, and 1% Nights. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $40,832 per year, or $19.6 per hour.

Treatment Plant Operator Senior County Plant

Metropolitan St. Louis Sewer District

Saint Louis, MO • On-site

Full-time

Re-posted 18 days ago

Job description

Essential Functions:
Support 24/7 operations.

Oversee the operation and routine maintenance of process and support areas.

Monitor, initiate, and direct adjustments to plant processes and equipment both manually and through process control systems including remote facilities.

Adjust plant processes as indicated by laboratory tests.

Take samples of wastewater and other process flows.

Perform basic wastewater laboratory analysis.

Clean plant process areas and equipment.

Maintain records and prepare reports.

Direct Treatment Plant Operator Trainees and Treatment Plant Operators to investigate and correct process control problems.

Assist in training operators.

Assist plant's trades employees.

Required to fill-in for Team Leaders at the Treatment Plant.


Additional Responsibilities:

Perform related work as required or as delegated by Team Leaders and Supervisor.
MINIMUM QUALIFICATIONS:

Training and Experience:

Graduation from high school or equivalent and possess a Missouri Class "A" wastewater treatment operator's license.

Desirable Knowledge, Skills, and Abilities.
Thorough knowledge of the operation and maintenance of electrical and mechanical wastewater treatment plant equipment.

Considerable knowledge of safe working practices.

Ability to make accurate readings.

Ability to understand and record information on charts and meters.

Ability to lead and oversee the work of others.

Ability to maintain records and prepare reports.


SPECIAL REQUIREMENT:
Must possess and maintain a Missouri Class "A" wastewater treatment operator's license.

Must possess a valid driver's license by the state in which the employee resides.

Pursuant to MSD's "Substance Abuse Policy and Procedures," this position has been designated as safety sensitive, and candidate must pass a Non-D.O.T. Drug Test for this position. Employees occupying this position are not subject to Federal (D.O.T.) Drug and Alcohol Testing Regulations

Employees of MSD must have a meets expectations.

Physical Demands
Stationary Position: Frequently

Move/Traverse: Frequently

Stationary Position/Seated: Rarely

Transport/Lifting: Frequently

Transport/Carrying: Frequently

Exerting Force/Pushing: Frequently

Exerting Force/Pulling: Frequently

Ascend/Descend: Frequently

Balancing: Frequently

Position Self/Stooping: Frequently

Position Self/Kneeling: Frequently

Position Self/Crouching: Frequently

Position Self/Crawling: Occasionally

Reaching: Frequently

Handling: Frequently

Grasping: Frequently

Feeling: Frequently

Communicate/Talking: Frequently

Communicate/Hearing: Frequently

Repetitive Motions: Frequently

Coordination: Frequently

Work Environment
Extreme cold: Occasionally

Extreme heat: Occasionally

Humidity: Frequently

Wet: Frequently

Noise: Frequently

Hazard: Frequently

Temperature Change: Frequently

Atmospheric Conditions: Frequently

Vibration: Frequently


 

The Metropolitan St. Louis Sewer District provides comprehensive wastewater and storm water management services to residents and businesses in both St. Louis City and County. As one of the most recognized employers in the region and a fixture in the downtown area, MSD employs over 900 individuals in a wide-range of roles including skilled crafts and laborers, engineering, information technology, finance, human resources and administration support.  We invite you to be part of the team!

Apply