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Injection Molding Machine Operator Jobs in Riverside, CA

Honor Plastics & Molding

Setup Technician

Pomona, CA · On-site

$24.50 - $25/hr

Follows work orders, blueprints, and programming folders to set up plastic injection molding machines to produce quality parts * Inspect molds after set-up is completed for the following: water leaks ...

Honor Plastics & Molding

Setup Technician

Pomona, CA · On-site

$24.50 - $25/hr

Follows work orders, blueprints, and programming folders to set up plastic injection molding machines to produce quality parts * Inspect molds after set-up is completed for the following: water leaks ...

Ambrit Engineering

Process Technician

Santa Ana, CA

$28 - $34/hr

Can assist and coordinate daily activities of production workers engaged in operating plastic ... Experience with injection molding machines and auxiliary equipment * Ability to identify and ...

Honor Plastics & Molding

Tool Room Machinist

Pomona, CA · On-site

$22 - $25/hr

Basic knowledge of Injection molding and mold maintenance * Tagging and placing molds in assigned ... injection molding machinery and associated auxiliary equipment. • Possess a high degree of ...

Datwyler

Press Operator- Injection

Ontario, CA · On-site

$20 - $23/hr

The press operator - injection sets up and operates injection molding presses to convert uncured strips of rubber into cured parts. This role will be for 2nd shift production. Primary ...

Datwyler

Press Operator- Injection

Ontario, CA · On-site

$20 - $23/hr

The press operator - injection sets up and operates injection molding presses to convert uncured strips of rubber into cured parts. This role will be for 2nd shift production. Primary ...

Datwyler

Press Operator Injection

Ontario, CA · On-site

$20 - $23/hr

The press operator - injection sets up and operates injection molding presses to convert uncured strips of rubber into cured parts. This role will be for 2nd shift production. Primary ...

Datwyler

Press Operator Injection

Ontario, CA · On-site

$20 - $23/hr

The press operator - injection sets up and operates injection molding presses to convert uncured strips of rubber into cured parts. This role will be for 2nd shift production. Primary ...

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All JobsInjection Molding Machine Operator JobsInjection Molding Machine Operator Jobs in Riverside, CA

Injection Molding Machine Operator information

See Riverside, CA salary details

$12

$19

$26

How much do injection molding machine operator jobs pay per hour?

As of Jun 9, 2026, the average hourly pay for injection molding machine operator in Riverside, CA is $19.15, according to ZipRecruiter salary data. Most workers in this role earn between $16.06 and $21.59 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an Injection Molding Machine Operator, and why are they important?

To thrive as an Injection Molding Machine Operator, you need a solid understanding of manufacturing processes, mechanical aptitude, and typically a high school diploma or equivalent. Familiarity with injection molding machines, quality control systems, and basic computer operation is important, and some roles may require certification in plastics processing or safety training. Attention to detail, problem-solving abilities, and effective communication are valuable soft skills that help operators maintain quality and address issues quickly. These skills ensure consistent production quality, reduce downtime, and support a safe and efficient manufacturing environment.

What are some common challenges faced by Injection Molding Machine Operators and how can they be addressed?

Injection Molding Machine Operators often encounter challenges such as machine malfunctions, maintaining consistent product quality, and minimizing material waste. Addressing these issues requires strong troubleshooting skills, attention to detail, and adherence to safety and quality protocols. Operators typically collaborate closely with maintenance teams and quality control inspectors to quickly resolve technical issues and ensure production standards are met. Continuous learning and familiarity with different plastics and machine types also help operators adapt to changing production demands and advance in their careers.

What is an Injection Molding Machine Operator?

An Injection Molding Machine Operator is a skilled worker responsible for setting up, operating, and maintaining machines that shape plastic or other materials into parts and products using molds. Their duties include loading materials into the machine, adjusting settings for temperature and pressure, monitoring the production process, and performing quality checks on finished products. They also troubleshoot issues, perform routine maintenance, and ensure safety standards are met in the manufacturing environment.

What is the difference between Injection Molding Machine Operator vs Plastic Molding Technician?

AspectInjection Molding Machine OperatorPlastic Molding Technician
CredentialsHigh school diploma, on-the-job trainingHigh school diploma, technical training or certification
Work EnvironmentFactories, manufacturing plantsFactories, manufacturing plants
Job FocusOperating and monitoring machinesMaintaining, troubleshooting, and setting up molds
Industry UsageCommon in plastics manufacturingCommon in plastics and rubber industries

While both roles work within plastics manufacturing, Injection Molding Machine Operators primarily focus on operating and monitoring molding machines, whereas Plastic Molding Technicians handle mold setup, maintenance, and troubleshooting. The roles often overlap but differ in technical responsibilities and skill requirements.

Injection Molding Machine Operator jobs near you

Injection Molding Operator (3rd Shift)

Balda C Brewer

Ontario, CA • On-site

$16.90 - $18/hr

Full-time

Posted 6 hours ago

Job description

3rd shift pays a +$2.00 shift differential


Operate injection molding machines following instructions and written requirements. Collect parts, inspect, separate and package as required per requirements. Separate and document known defective parts on required forms. Inform Supervisor or Technician when defects exceed allowable amounts.

Essential Job Functions and Responsibilities:

· Follow all safety rules and guidelines. Report any unsafe conditions or practices.

· Maintain a clean work area through-out the shift.

· Report to assigned machine on time. Always take breaks & lunch at appropriate times as instructed returning to work area promptly.

· Work with shift production leads as required.

· At start of shift read, understand, and ask questions regarding training to work instructions. If your unsure how to proceed, escalate to shift supervisor.

· Receive training by a higher-level operator and follow the operator instruction.

· Check the packaged parts before relieving the previous shift operator, report any discrepancies immediately.

· Run the mold at the standard cycle time.

· Perform visual inspections of product checking quality as trained reporting immediately any discrepancies to your lead assistant, lead, or technician.

· Record the amount of defective parts on defects scrap form. Report to the lead assistant, lead, or technician every time that the scrap is more than allowed.

· Package product according to work instructions.

· Verify labels against work order and work center.

· Help perform line clearances on their assigned work centers.

· Verify that assigned work centers have the necessary equipment and materials for the whole shift.

· Label bags, or containers of products with date, your stamp or initials accepting the product packaged is per the work instructions and quality requirements. Do not fill out labels in advance.

· At shift end, escalate any issues with your work center to shift supervisor to include in their rundown to incoming shift.

Core Competencies:

· Fluency in English: Being able to read, write, and speak is a requirement

· Fluency in Spanish is a plus.

  • Cosmetic Inspection
  • Housekeeping
  • General Safety
  • Time Management

Knowledge, Skills, and Abilities:

  • Team Work
  • Inspection Skills
  • Organizational Skills
  • Customer Service (internal or external)

· Good Attendance/Dependability

· Basic math skills

· Good Communication skills

· Be honest and respectful to everyone at all times.

Education and/or Experience:

· High School Diploma or GED.

· Some factory related experience preferred but not mandatory.

Training Requirements:

· General Safety.

· GMP & Cleanliness.

· Clean room Gowning Procedure.

· Training to Work orders/work centers.

· Work instructions and SOP training

· MSDS

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