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Plant Operator Trainee Jobs in California (NOW HIRING)

Wastewater Operator

Crockett, CA · On-site

$37 - $43/hr

We are seeking a skilled and motivated Wastewater Plant Operator to oversee the daily operation and ... Train and mentor junior staff or trainees as required. Work Environment: * Work is performed in ...

Wastewater Operator

Crockett, CA · On-site

$37 - $43/hr

We are seeking a skilled and motivated Wastewater Plant Operator to oversee the daily operation and ... Train and mentor junior staff or trainees as required. Work Environment: * Work is performed in ...

We are seeking a skilled and motivated Wastewater Plant Operator to oversee the daily operation and ... Train and mentor junior staff or trainees as required. Work Environment: * Work is performed in ...

Follow Standard Operating Procedures, Piping & Instrumentation Diagrams, job plans and/or equipment ... Understand industrial plant safety and environment requirements Requirements: Tech 1: * Associates ...

Power Operations Trainee

Middletown, CA · On-site

$28.50 - $32.32/hr

... plant electrical, instrumentation, and control systems; operates and monitor equipment to optimize unit performance. Performs the necessary operating, regulating and adjusting duties to maintain ...

Power Operations Trainee

Middletown, CA · On-site

$28.50 - $32.32/hr

... plant electrical, instrumentation, and control systems; operates and monitor equipment to optimize unit performance. Performs the necessary operating, regulating and adjusting duties to maintain ...

Power Operations Trainee

Middletown, CA · On-site

$28.50 - $32.32/hr

... plant electrical, instrumentation, and control systems; operates and monitor equipment to optimize unit performance. Performs the necessary operating, regulating and adjusting duties to maintain ...

Power Operations Trainee

Middletown, CA · On-site

$28.50 - $32.32/hr

... plant electrical, instrumentation, and control systems; operates and monitor equipment to optimize unit performance. Performs the necessary operating, regulating and adjusting duties to maintain ...

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Showing results 1-20

Plant Operator Trainee information

See California salary details

$30.1K

$52.3K

$84.4K

How much do plant operator trainee jobs pay per year?

As of Sep 5, 2026, the average yearly pay for plant operator trainee in California is $52,269.00, according to ZipRecruiter salary data. Most workers in this role earn between $41,400.00 and $58,700.00 per year, depending on experience, location, and employer.

What is a plant operator trainee?

Plant Operator Trainees are entry-level employees who learn to operate, monitor, and maintain machinery and equipment at facilities such as power plants, water treatment plants, or manufacturing sites. They receive on-the-job training to understand safety procedures, equipment operation, and facility protocols under the supervision of experienced operators. Their goal is to gain the necessary skills and knowledge to eventually become fully qualified Plant Operators. This role typically involves a combination of classroom instruction and hands-on experience.

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

To thrive as a Plant Operator Trainee, you need a basic understanding of mechanical and electrical systems, a high school diploma or equivalent, and a willingness to learn plant operations. Familiarity with SCADA systems, safety protocols, and basic hand tools is often required, and some employers may prefer candidates with relevant certifications like OSHA or confined space entry. Attention to detail, teamwork, and strong communication skills help trainees adapt quickly and contribute to safe, efficient plant operations. These skills are crucial for ensuring safety, minimizing downtime, and supporting the smooth functioning of the facility.

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

Plant Operator Trainees often encounter challenges such as adapting to rotating shift schedules, learning to monitor complex machinery, and quickly troubleshooting minor operational issues. Trainees must also become familiar with strict safety protocols and environmental regulations, which can be overwhelming at first. However, with mentorship from experienced operators and structured hands-on training, most trainees are able to develop the necessary confidence and skills to handle these responsibilities effectively.

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

AspectPlant Operator TraineePlant Operator
CredentialsHigh school diploma or equivalent; some certifications may be preferredTypically requires relevant certifications or licenses, such as a state-issued operator license
Work EnvironmentTraining environment, supervised, learning on the jobFull responsibility for operating equipment, more autonomous
Job ResponsibilitiesAssisting and learning under supervisionOperating machinery, monitoring systems, troubleshooting

In summary, a Plant Operator Trainee is in a learning phase, gaining skills and certifications needed to become a fully qualified Plant Operator. The trainee role involves supervision and assistance, while the Plant Operator role involves independent operation and responsibility.

How to get hired as a plant operator trainee?

To get hired as a plant operator trainee, candidates typically need a high school diploma or equivalent, relevant technical training or certification, and sometimes a valid driver's license. Employers often look for basic mechanical skills, the ability to follow safety procedures, and willingness to learn on the job. Prior experience in related roles or with operating machinery can be advantageous.

Is it hard to become a plant operator trainee?

Becoming a plant operator trainee typically requires a high school diploma or equivalent, technical training, and sometimes a relevant certification. The process involves passing written exams and gaining on-the-job experience, making it moderately challenging but achievable with proper preparation and training. Skills in mechanical systems, safety procedures, and attention to detail are important for success in this role.

What degree do I need to become a plant operator trainee?

A plant operator trainee typically needs a high school diploma or equivalent; some positions may require post-secondary education such as an associate degree in engineering, environmental science, or a related field. Relevant skills include understanding of mechanical systems and safety procedures, and obtaining certifications like a commercial driver's license or plant-specific training can be beneficial.

What are the most commonly searched types of Plant Operator jobs in California?

The most popular types of Plant Operator jobs in California are:

What are popular job titles related to Plant Operator Trainee jobs in California?

For Plant Operator Trainee jobs in California, the most frequently searched job titles are:

What cities in California are hiring for Plant Operator Trainee jobs?

Cities in California with the most Plant Operator Trainee job openings:

Infographic showing various Plant Operator Trainee job openings in California as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $52,269 per year, or $25.1 per hour.

Operator Trainee - Shipping & Warehouse

MP Materials Corp.

Mountain Pass, CA • On-site

$28.21/hr

Full-time

Re-posted 6 days ago


Key responsibilities

  • Transfer packaged products from the operating areas of the plant to the product warehouses or alternate staging/loading areas.

  • Prepare, package, document and deliver outbound materials which may include palletization, banding, wrapping, blocking, and bracing procedures.

  • Review bills of lading and shipping checklists to execute outbound shipments.


MP Materials rating

9.0

Company rating: 9.0 out of 10

Based on 10 frontline employees who took The Breakroom Quiz

1st of 41 rated mining


Job description

Company Overview:

MP Materials (NYSE: MP) is rebuilding American industrial capability for a new era of autonomy, robotics, and electrification.

We are the only U.S. company with a fully integrated rare earth supply chain—from mining and refining to advanced metal and magnet manufacturing. Our products include both the critical materials used to make permanent magnets and the finished magnets themselves—enabling next-generation technologies in robotics, automation, aerospace, transportation, defense, and energy systems. These materials are the foundation of physical AI—the convergence of computation, movement, and control.

We hire ambitious, mission-driven people who want to tackle complex challenges and shape the future of strategic industries. Our culture is rooted in teamwork, resiliency, and integrity, with a deep commitment to operational excellence and national purpose. MP is rapidly evolving from a materials producer into a leading U.S. manufacturer—and our people are driving that transformation.

Position Overview:

The Operator Trainee in the shipping department is responsible for preparing and shipping out products to domestic and international customers. This includes the transferring and loading of all products onto sea containers, trucks, and other modes of transport.

Position Responsibilities:

  • Transfer packaged products from the operating areas of the plant to the product warehouses or alternate staging/loading areas.
  • Prepare, package, document and deliver outbound materials which may include palletization, banding, wrapping, blocking, and bracing procedures.
  • Review bills of lading and shipping checklists to execute outbound shipments.
  • Perform daily safety inspections of work areas and operating equipment.
  • Perform housekeeping in work areas as necessary.
  • Deliver supplies and reagents to different departments on site.

Basic Qualifications:

  • High School Diploma or equivalent required.
  • Valid Driver’s License and good driving record required to drive company vehicles on property.
  • Three years’ experience operating a forklift in a warehouse or industrial type setting.
  • Experience loading packages/products onto various modes of transport (semi, sea container, rail).
  • Familiarity with shipping documentation to include bills of lading and packing lists.
  • Basic computer skills.

Desired Qualities:

  • Strong attention to detail.
  • Ability to multitask.
  • Ability to communicate with management and staff professionally and effectively.

MP Materials is Proud to be an Equal Opportunity / Affirmative Action Employer 

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other characteristic protected by law. Underrepresented groups/Women/Disabled/Veterans are encouraged to apply. Candidates whose disabilities make them unable to meet the position’s requirements will still be considered qualified if they can perform the essential functions of the job with reasonable accommodation.

Your Right to Work – In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment verification document form upon hire.

For Assistance with Application - Alternative methods of applying for employment are available to individuals unable to submit an application through this site because of a disability. Contact Human Resources Department at 702-844-6111; dial 7 when prompted for HR;1700 South Pavilion Center Dr. 8th Floor, Las Vegas, NV 89135 to discuss reasonable accommodation.

Safety Provision - Employees are responsible for following all company, industry and regulatory procedures and laws to ensure a safe work environment for themselves and the company. Employees must have a willingness to promote safety among the workforce, participate in Process Hazard Analysis procedures and Pre-Startup Safety Reviews.

(PPE) Personal Protective Equipment is required when performing work in a mine, manufacturing, outdoor, or plant environment. Required PPE may include, but is not limited to, hard hat, hearing protection, safety glasses, safety footwear, respirator, rubber steel-toe boots, protective clothing, gloves, and any other protective equipment as required.

Working Conditions - Our facility sits at an elevation of 4,700 feet. Employees may be subject to extreme weather conditions when working in an outdoor setting (heat and cold, wind). Work is at an open pit mine or manufacturing/chemical plant setting, which may include exposure to moving mechanical parts, toxic chemicals, risk of electrical shock, explosives, fumes, or airborne particles.

Physical Demands - Manual dexterity; sense of touch; sense of smell; speaking clearly; hearing-speech range; hearing – all ranges; seeing, reading and comprehensions; seeing – distant/near; depth perception; color vision. While performing the job responsibilities, the employee is required to talk and hear. The employee is often required to stand and use their hands and fingers, to handle or feel and to manipulate laboratory equipment. The employee is occasionally required to walk, reach with arms and hands, climb or balance, and to stoop, kneel, crouch or crawl. Vision abilities required by this job include close vision. Employees must pass a full-face respiratory fit test. Employees must be able to lift 50 lbs. Must be able to work in PPE level C. These requirements are representative, but not all-inclusive, of the knowledge, skill, and ability required of the employee.


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