Top 98 Process operator Jobs in Ontario Ca

Plant Operator Mechanic - Renewable Power (West Covina)
Opal Fuels —West Covina, CA
- $35 - $39 an hour
- Weekends as needed
- Mechanic experience
- Mid-level
- 3 years
- Paid holidays
- Disability insurance
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7d
Process Technician (2nd Shift)
Viant Medical —Upland, CA
- $28 - $33 an hour
- Overtime
- 18 years or older
- No experience needed
- Mid-level
- Paid holidays
- Health insurance
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Duplex Filling & Mixing Technician (Wed-Sat 6:00pm-6:30am)
B. Braun US Pharmaceutical Manufacturing LLC —Irvine, CA
- $26 an hour
- Full-time
- Office
- 3 years
- High school diploma or GED
- Health insurance
- 401(k)
4d
Process Technician
Key Skilled Personnel —Corona, CA
- $28 - $32 an hour
- Full-time
- English
- Mid-level
- High school diploma or GED
Quick Apply
2d
WASTEWATER PLANT OPERATOR I or WASTEWATER PLANT OPERATOR I TRAINEE
City of Riverside, CA —Riverside, CA
- $59,040 - $83,100 a year
- Online Application
- Customer service
- Pass drug screening
- Forklift
- Disability insurance
- Health insurance
8d
Production Technician
Linde plc —Ontario, CA
- $58,451 - $85,729 a year
- Weekends as needed
- Microsoft Word
- Microsoft Excel
- Mid-level
- Paid holidays
- Disability insurance
Manufacturing Operator I
Viant Medical —Upland, CA
- $17 - $21 an hour
- Overtime
- 18 years or older
- No experience needed
- High school diploma or GED
- Paid holidays
- Health insurance
Quick Apply
Production Operator
GAF Materials Corporation —Fontana, CA
- $24.65 an hour
- Overtime
- Computer literacy
- Basic math
- English
- Wellness program
- Health insurance
9d
Manufacturing Tech III
Gilead Sciences —La Verne, CA
- $69,445 - $89,870 a year
- Full-time
- Oracle
- Mid-level
- 3 years
- Health insurance
- Dental insurance
Production Technician
Ecolab Inc. —City of Industry, CA
- $26.50 an hour
- Overtime
- High school diploma or GED
- Ability to lift 50 pounds
- Warehouse experience
- Paid parental leave
- Employee stock purchase plan
3d
Water Production Technician I
City of Arcadia —Arcadia, CA
- $5,265 - $6,574 a month
- Online Application
- Schematics
- Writing skills
- Residential
- AD&D insurance
- Disability insurance
Production Technician I
STAAR Surgical —Monrovia, CA
- $23 - $28 an hour
- Computer literacy
- English
- High school diploma or GED
Building Plant Operator
San Bernardino County —San Bernardino, CA
- $29.63 - $40.78 an hour
- Overtime
- Background check
- Management
- Pass drug screening
Compounder
Nexus Brands Group Inc —Corona, CA
- $23 - $25 an hour
- Overtime
- Background check
- 18 years or older
- Ability to walk for extended periods
- COVID-19 protective measures
- Paid holidays
Quick Apply
Wastewater Chief Plant Operator
WaterWorkForce —San Bernardino, CA
- $48 - $55 an hour
- Full-time
- Driver's License
- Travel
- Organizational skills
- Health insurance
- Dental insurance
Quick Apply
Production Line Operator
B2Sign, Inc. —Pomona, CA
- $18.50 an hour
- Full-time
- Background check
- Forklift
- High school diploma or GED
- Health insurance
- Dental insurance
Quick Apply
9d
Powder Milling and Cleaning Tech, 2nd shift, 3-6 Month Temp Contract
Integrity Consulting —Santa Ana, CA
- $19.65 - $25.00 an hour
- Temporary
- English
- Mid-level
- High school diploma or GED
- Health insurance
- Dental insurance
Quick Apply
11d
Treatment Plant Operator IV (Special Districts)*
San Bernardino County —San Bernardino, CA
- $37.27 - $51.40 an hour
- Online Application
- Supervising experience
- Military encouraged
- Computer skills
- Referral program
Production Operator
Sika —Riverside, CA
- Full-time
- Computer literacy
- English
- Forklift
- Paid parental leave
- Paid holidays
5h
Process Technician
Howmet Aerospace —Brea, CA
- $20 - $25 an hour
- Full-time
- English
- Entry level
Quick Apply

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Plant Operator Mechanic - Renewable Power (West Covina)

Opal Fuels -
West Covina, CA

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Job Details

Full-time
$35 - $39 an hour
7 days ago

Benefits

Paid holidays
Disability insurance
Health insurance
Dental insurance
Tuition reimbursement
Paid time off
Vision insurance
401(k) matching
Life insurance
Referral program

Qualifications

Equipment service recordkeeping
Machine assembly
Mechanical valves
Mechanical blueprint interpretation
Computer operation
Troubleshooting schematics
Maintenance inventory management
Millwright
Mechanic experience
Flow sensors
Safety regulations
Flow meters
Lighting systems
Regulatory compliance
Power plant experience
Industrial mechanic experience
Environmental compliance
Reactive equipment maintenance
Mid-level
Industrial equipment installation
Industrial equipment troubleshooting
3 years
High school diploma or GED
Maintenance activity documentation
Mechanical drawings
Driving
Gas chromatographs
Maintenance task scheduling
Maintenance schedule development
Environmental law compliance support

Full Job Description

About OPAL Fuels
OPAL Fuels (Nasdaq: OPAL) is a leader in the capture and conversion of biogas into low carbon intensity RNG and renewable electricity. OPAL Fuels is also a leader in the marketing and distribution of RNG to heavy duty trucking and other hard to de-carbonize industrial sectors. For additional information, and to learn more about OPAL Fuels and how it is leading the effort to capture North America’s naturally occurring methane and decarbonize the economy, please visit www.opalfuels.com.

Position Summary
We are seeking a highly skilled Industrial Mechanic with experience in steam power generation to join our team as a Mechanic and Plant Operator at a small steam boiler power plant in West Covina, CA. This position blends hands-on mechanical maintenance with operational oversight of steam generation systems. Reporting to the Lead Plant Operator, the successful candidate will play a key role in ensuring reliable plant performance, maintaining equipment integrity, and supporting safe, efficient power production. The primary objectives of this role are to maximize output, minimize downtime, and uphold the highest standards of safety, cleanliness, and environmental compliance.

Duties and Responsibilities

Operate, monitor, and maintain steam boiler systems, turbines, and auxiliary equipment.
Conduct daily checks of operating equipment, including flow meters, gas chromatographs, fluid levels, pressure and temperature readings, and unusual noises to identify and correct issues before failure occurs.
Sample feedwater and boiler water regularly, analyze results, and maintain proper water chemistry to ensure safe and efficient boiler operation.
Perform preventative and corrective maintenance on mechanical systems, pumps, valves, and rotating machinery.
Install, align, and repair industrial equipment in accordance with millwright standards.
Troubleshoot mechanical and operational issues to minimize downtime.
Assist in planning and scheduling maintenance activities.
Maintain detailed records of production data, equipment operating hours, service schedules, inspections, and maintenance activities.
Follow all safety protocols and environmental regulations to ensure compliance.
Maintain a high level of cleanliness in and around the plant: prevent oil accumulation, keep equipment and floors presentable, and maintain the yard and perimeter fence.
Keep all on-site parts and supplies stocked, organized, and inventoried.
Operate the plant with a strong focus on safety: clean spills immediately, ensure lighting systems are functional, eliminate slip/trip hazards, and promptly address electrical or mechanical issues. Confirm that all visitors, mechanics, and contractors follow safe work practices.
Work with internal resources to resolve operational and mechanical problems.
Ensure adherence to company policies, procedures, regulatory requirements, and safety standards.
Communicate material and personnel issues clearly to area managers.
Perform other duties as assigned.

Qualifications and Skills

High school diploma/ GED equivalent
Unlimited Steam License or Minimum 3–5 years of experience in mechanical maintenance and plant operations, ideally in power generation.
Journeyman- level Industrial Mechanic or Millwright certification is preferred.
Proficiency in equipment alignment, rigging, and mechanical assembly.
Ability to read and interpret technical drawings, schematics, and manuals.
Ability to work independently and as part of a team.
Commitment to workplace safety and regulatory compliance.
Willingness to work shifts, weekends, or on-call as required.
Basic electrical knowledge is preferred.
Strong knowledge of steam boiler systems, pumps, compressors, and rotating equipment.
General troubleshooting abilities.
Skilled in recordkeeping and logging.
Computer skills (Microsoft Office).
Must be self-motivated and perform most tasks with little or no supervision.
Experience in welding helpful.

Work Hours and Arrangements
Monday to Friday 6:00am - 2:30pm; Occasional 12 hour rotating shift coverage to support vacancies.

Physical Requirements
The physical demands described are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Position requires physical effort such as that associated with driving a motorized vehicle, operate an ATV, using hand tools, and typing on a computer. Position requires moderate lifting (10-50 lbs.), occasional need to walk on irregular surfaces, and occasional stooping, kneeling, climbing, or crouching. Also requires the use of hands and arms to operate/examine gas meters, flow meters, hand tools, power tools, bridge and jib cranes and test/diagnostic equipment.

Job Type
Full-time

Pay
The range for this role is anticipated to be $35.00 - $39.00 hourly with bonus for eligible positions. Where a specific pay range is noted, it is a good faith estimate at the time of this posting. The actual salary offered will be based on experience, skills, qualifications, market / business considerations, and geographic location.

Benefits

Health Insurance
Dental Insurance
Vision Insurance
Life Insurance
Short & Long Term Disability
401(k) plus Matching Contributions
Tuition Assistance
Referral Bonus
Generous Paid Time Off
Ten Paid Holidays per year

OPAL Fuels LLC is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, creed, national origin or ancestry, ethnicity, sex (including gender, pregnancy, sexual orientation, and gender identity), age, physical or mental disability, citizenship, past, current, or prospective service in the uniformed services, genetic information, or any other characteristic protected under applicable federal, state, or local law.

OPAL Fuels does not accept unsolicited resumes from third-party recruiters or agencies without a current signed agreement and written confirmation specifying the roles for which submissions are authorized. Any resumes submitted without an agreement and authorization will be considered the property of OPAL Fuels.

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Refine Your Search

process operator jobs in ontario ca

Plant Operator Mechanic - Renewable Power (West Covina)

Process Technician (2nd Shift)

Duplex Filling & Mixing Technician (Wed-Sat 6:00pm-6:30am)

Process Technician

WASTEWATER PLANT OPERATOR I or WASTEWATER PLANT OPERATOR I TRAINEE

Production Technician

Manufacturing Operator I

Production Operator

Manufacturing Tech III

Production Technician

Water Production Technician I

Production Technician I

Building Plant Operator

Compounder

Wastewater Chief Plant Operator

Production Line Operator

Powder Milling and Cleaning Tech, 2nd shift, 3-6 Month Temp Contract

Treatment Plant Operator IV (Special Districts)*

Production Operator

Process Technician

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