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Operator Trainee Jobs in California (NOW HIRING)

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Job Summary We are seeking a reliable and motivated Operator Trainee to assist in the setup and operation of corrugated production machinery. This position supports machine operators with daily ...

Be Seen First

Job Summary We are seeking a reliable and motivated Operator Trainee to assist in the setup and operation of corrugated production machinery. This position supports machine operators with daily ...

Press Operator Trainee

El Monte, CA · On-site

$49K - $57K/yr

If interested text Mike at 562 566 4712 and apply directly to this posting Press Operator Trainee South El Monte, CA $23.97 - $25.97/hour Full-time | Multiple shifts available Now Hiring ...

Clover Flat Landfill, a Waste Connections company, is looking for a Laborer / Scale House Attendant / Operator Trainee to join our team in Calistoga, CA! This is a full time, long term position with ...

$27.60/hr

Under the direction of the Manager/Supervisor/Lead Person, the Machine Operator Trainee is responsible for the operation of high- volume automated processing equipment. Adhered to the Standard ...

$19 - $22/hr

CNC Operator Trainee * Some Experience in operating CNC Lathe and Mills * Read and interpret blueprints, drawings, and work instructions * Inspect finished parts using measuring tools (calipers ...

Dip Operator Trainee

El Monte, CA · On-site

$53K - $67K/yr

Operator Trainee This role trains you to operate material handling and production equipment in a manufacturing environment. You safely move large honeycomb blocks, prepare and measure ingredients ...

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Operator Trainee information

See California salary details

$25.2K

$43K

$62.7K

How much do operator trainee jobs pay per year?

As of Jun 9, 2026, the average yearly pay for operator trainee in California is $42,960.00, according to ZipRecruiter salary data. Most workers in this role earn between $32,600.00 and $50,300.00 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, and why are they important?

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 are operator trainees?

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 California? The most popular types of Operator jobs in California are:
What are popular job titles related to Operator Trainee jobs in California? For Operator Trainee jobs in California, the most frequently searched job titles are:
What cities in California are hiring for Operator Trainee jobs? Cities in California with the most Operator Trainee job openings:

Wastewater Operator Trainee - Environmental Services Department

City of San Jose

San Jose, CA

$65K - $79K/yr

Full-time

Posted 7 days ago


City Of San Jose rating

8.8

Company rating: 8.8 out of 10

Based on 21 frontline employees who took The Breakroom Quiz

89th of 645 rated public administrative organizations


Job description

Our diverse and inclusive workforce of more than 7,000 employees play a key role in the success of San Jose, the heart of the Silicon Valley. All City of San Jose employees work together as one team to make San Jose a vibrant, innovative, and desirable place to live and work. Visit here to learn more about our One Team Leadership Values and Expectations, including quality and excellent customer service and here to learn more about San Jose.

The City of San Jose is an equal opportunity employer. Applicants for all job openings will be considered without regard to age, race, color, religion, sex, national origin, sexual orientation, disability, veteran status or any other consideration made unlawful under any federal, state or local laws. The City of San Jose is committed to offering reasonable accommodations to job applicants with disabilities.

If you need assistance or an accommodation due to a disability, please contact us at 408-535-1285, 711 (TTY), or via email at CityCareers@sanjoseca.gov. About the Department The Environmental Services Department (ESD) is a national leader in pollution prevention, watershed protection, utility service provision, and climate action. Together, ESD employees positively impact every resident and business in San Jose

Our department is an exceptional place to start or grow your career. We have a supportive leadership team, numerous professional growth opportunities, and an inclusive workplace culture that is welcoming of your talents. To learn more about ESD, follow @sjenvironment on X, Facebook and Instagram and San Jose Environmental Services on LinkedIn.

About the Division: The San Jose - Santa Clara Regional Wastewater Facility (RWF) is one of the largest advanced wastewater treatment facilities in the nation and treats water from homes and businesses in the cities of San Jose, Santa Clara, Milpitas, Campbell, Cupertino, Los Gatos, Monte Sereno, Saratoga, and unincorporated areas within Santa Clara County. The RWF serves a population of over 1.4 million people and has the capacity to treat 167 million gallons of wastewater per day. For more information visit our website at https://www.sanjoseca.gov/your-government/departments-offices/environmental-services/water-utilities/regional-wastewater-facility

Position Duties The Environmental Services Department is currently seeking to fill multiple full-time Wastewater Operator Trainee vacancies at the San Jose - Santa Clara Regional Wastewater Facility (RWF). The salary range for this classification is: $65,561.60- $79,726.40. The actual salary shall be determined by the final candidates' qualifications and experience

The Wastewater Operator Trainee position is in the Wastewater Operations and Management Division. The Operator in Training (OIT) performs routine operational duties at the Facility including but not limited to the following: Works closely with higher-level facility operation personnel to learn the various aspects of the wastewater treatment process and the control operations for the various sections of the Facility. Learns basic operation of the distributed control computer system to obtain the ability to locate trends, graphics, and single points and make process or control changes as needed.

Takes samples of wastewater throughout the treatment process to perform simple tests for process control. Learns to read and interpret gauges and other control instrumentation. Recognize and diagnose alarms and other warning indications, and to follow corrective procedures to maintain a stable process control and meet government permit requirements.

Participates in the operation and periodic maintenance of a variety of process equipment such as valves, sluice gates, pumps, blowers, samplers, dissolved oxygen sensors, suspended solids meters, chlorination/dichlorination and other wastewater analyzers and related equipment. The Facility is staffed 24 hours a day, seven days a week. Operations staff may work 12-hour shifts, nights, weekends and holidays.

Shift assignments change every 12 weeks. Interested candidates with mechanical aptitude, math skills, good interpersonal skills, knowledge and use of hand tools, and are willing to work in different shifts, are encouraged to apply. Candidates selected for the OIT positions will be provided with on-the-job training through an Operator Trainee program.

Some study time will be required outside of the regular work shift and trainees will be required to show satisfactory completion of required course work. About the Wastewater Operator Series: The Wastewater Operator Trainee is the entry-level classification into the Wastewater Operator series. Trainees who successfully complete the OIT training program may have an opportunity to be promoted to Wastewater Operator through the qualifying promotional process.

The career path for Operators is Wastewater Operator I/II/III. Minimum Qualifications Education: Any combination of training and experience equivalent to completion of High School. Experience: None.

Certifications: As a condition of continued employment as a Wastewater Operator Trainee, possession of a valid California Water Resources Control Board Operator in Training Certificate must be obtained within the probation period. Required Licensing: Possession of a valid State of California Class C driver's license. If selected, the Conditional Offer of Employment may be contingent upon you providing proof of a valid State of California driver's license, and an assessment of your California DMV Employer Pull Notice (EPN) as per the DMV Release of Driver Record Information form.

Failure to pass the DMV Pull Notice assessment will deem you ineligible for employment. Physical Requirement:This classification requires a pre-employment respiratory physical exam. Other Qualifications The ideal candidate will possess the following competencies, as demonstrated in past and current employment history: Job Expertise: Demonstrates knowledge of and experience with applicable professional/technical principles and practices, Citywide and departmental procedures/policies and federal and state rules and regulations; ability to follow oral and written instructions; knowledge of and the ability to effectively use common hand tools; knowledge of basic mechanical concepts; successful completion of college-level math courses a plus; successful completion of college-level science courses a plus; successful completion of wastewater treatment coursework is highly desirable.

Computer Skills: Experienced with common business computer applications including but not limited to: MS Outlook, MS Word, MS PowerPoint, MS Access, and MS Excel. Continuous Improvement: Actively identifies new areas for learning and regularly creates and takes advantage of learning opportunities. Initiative: Exhibits resourceful behaviors toward meeting job objectives; anticipates problems, is proactive, and avoids difficulties by planning ahead; displays willingness to assume extra responsibility and challenges; pursues continuing education opportunities that promotes job performance.

Problem Solving: Approaches a situation or problem by defining the problem or issue; determines the significance of problem; collects information; uses logic and intuition to arrive at decisions or solutions to problems that achieve the desired outcome. Teamwork and Interpersonal Skills: Develops effective relationships with co-workers and supervisors by helping others accomplish tasks and using collaboration and conflict resolution skills. Communication Skills: Effectively conveys information and expresses thoughts and facts clearly, orally and in writing; demonstrates effective use of listening skills and displays openness to other people's ideas and thoughts.

Veteran's Preference The City of San Jose has a Veteran's Preference Policy that applies to this recruitment. To claim veteran's preference points, you must provide a copy of your honorable military discharge form, Form DD214. For more information on the City's Veteran's Preference Policy, please visit this link: https://www.sanjoseca.gov/home/showpublisheddocument/86791/637901057146470000 Selection Process: The selection process will consist of an evaluation of the applicant's training and experience based on the application and responses to all the job specific questions

You must answer all questions to be considered or your application may be deemed incomplete and withheld from further consideration. Only those candidates whose backgrounds best match the position will be invited to proceed in the selection process. Additional phases of the selection process will consist of one or more interviews, one of which will include a written exam.

If you have questions about the duties of these positions, the selection or hiring processes, please contact Adrienne Pea at Adrienne.Pea@sanjoseca.gov. Additional Information: Employment Eligibility: Federal law requires all employees to provide verification of their eligibility to work in this country. Please be informed that the City of San Jose will NOT sponsor, represent or sign any documents related to visa applications/transfers for H1-B or any other type of visa which requires an employer application

You must answer all job-specific questions to be considered for this vacancy or your application will be deemed incomplete and withheld from further consideration. Applicants are expected to write their own essays/responses. Please note that applications are currently not accepted through CalOpps or any other third party job board application system.

This recruitment may be used to fill multiple positions in this, or other divisions or departments. If you are interested in employment in this classification, you should apply to ensure you are considered for additional opportunities that may utilize the applicants from this recruitment. Please allow adequate time to complete the application and submit before the deadline or the system may not save your application.

If your online application was successfully submitted, you will receive an automatic confirmation email to the email address you provided. IF YOU DO NOT RECEIVE THE CONFIRMATION, please email CityCareers@sanjoseca.gov and we will research the status of your application. AI and the Hiring Process We recognize that Artificial Intelligence (AI) is becoming part of daily life and can be a valuable tool for learning, research, and professional growth

We encourage candidates to use AI responsibly as a support in preparing application materials, live assessments, and interviews. However, we value authenticity, accuracy and truthfulness. Application responses and interview answers must reflect your own knowledge, skills, and experiences.

While AI can supplement preparation, it cannot replace the originality and judgment we look for in our employees. This ensures fairness, transparency, and equity for all applicants in the hiring process.


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