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Injection Molding Machine Operator Jobs in Riverside, CA

Ezonyx Bio Technologies

Injection Mold Maker

Brea, CA

... molding department * Conduct complicated mold maintenance as needed * T/R housekeeping, keep machine centers and personal tools orderly * Notify manager or project manager of any materials or tools ...

Ezonyx Bio Technologies

Injection Mold Maker

Brea, CA ยท On-site

... molding department * Conduct complicated mold maintenance as needed * T/R housekeeping, keep machine centers and personal tools orderly * Notify manager or project manager of any materials or tools ...

Prismatik

Manufacturing Operator

Irvine, CA

$20 - $22/hr

Get an inside look at what it's like to be a Manufacturing Operator at Glidewell! This short video ... mills, injection molding machines, furnaces, ovens, mixers, and surface grinders. Utilizes hand ...

Applied Medical

Mold Maker

Rancho Santa Margarita, CA ยท On-site

$25 - $40/hr

Experience operating or supporting CNC machining equipment. * Background in manufacturing processes such as machining, injection molding, extrusion, and stamping. * Experience supporting medical ...

Applied Medical

Mold Maker

Rancho Santa Margarita, CA

$25 - $40/hr

Experience operating or supporting CNC machining equipment. * Background in manufacturing processes such as machining, injection molding, extrusion, and stamping. * Experience supporting medical ...

Applied Medical

Mold Maker

Rancho Santa Margarita, CA ยท On-site

$25/hr

Experience operating or supporting CNC machining equipment. * Background in manufacturing processes such as machining, injection molding, extrusion, and stamping. * Experience supporting medical ...

LIFEBLOOM Corp.

Encapsulation Machine Operator

Brea, CA ยท On-site

$17/hr

Encapsulation Machine Operator (Entry Level). Basic As an Encapsulation Machine Operator, you will ... Disassemble and reassemble equipment i.e. perform mold changes. * Verification of equipment ...

HiFyve

Electro-Mechanical Technician

Fontana, CA

$34 - $42/hr

Unlike conventional manufacturing environments with separate roles for operators, maintenance, and ... injection molding equipment (approx. 600-ton Husky machines). * Handle changeovers, setups, and ...

Lifebloom Corp.

Encapsulation Machine Operator

Brea, CA ยท On-site

$17/hr

Encapsulation Machine Operator (Entry Level). Basic As an Encapsulation Machine Operator, you will ... Disassemble and reassemble equipment i.e. perform mold changes. * Verification of equipment ...

WestFall Technik

Machine Operator

Riverside, CA ยท On-site

$16.50/hr

The site locations, operating within the Westfall Technik enterprise, are internationally aligned ... injection molding and support equipment. DUTIES AND RESPONSIBILITIES * Communicate to the lead and ...

Westfall Technik

Machine Operator

Riverside, CA

$16.50/hr

The site locations, operating within the Westfall Technik enterprise, are internationally aligned ... injection molding and support equipment. DUTIES AND RESPONSIBILITIES * Communicate to the lead and ...

Prismatik

Manufacturing Operator

Irvine, CA ยท On-site

$20 - $22/hr

A Day in the Life of a Manufacturing Operator Join the Team at Glidewell Essential Functions ... mills, injection molding machines, furnaces, ovens, mixers, and surface grinders. Utilizes hand ...

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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 8, 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 Mold Maker

Ezonyx Bio Technologies

Brea, CA

Full-time

Posted 9 days ago

Job description

Company Description

EZONYX BIO TECHNOLOGIES, INC. IS A FULL-SERVICE BIOPLASTICS COMPANY THAT SPECIALIZES IN SUSTAINABLE PRODUCT INNOVATION AND THE MANUFACTURING OF PROPRIETARY BIOPOLYMER RESINS, PROVIDING COMPREHENSIVE DESIGN AND DEVELOPMENT SOLUTIONS FOR COMPANIES SEEKING ALTERNATIVES TO CONVENTIONAL PLASTICS.

Job Description

Plastic Injection Mold Makerย (Los Angeles)

EZONYX BIO TECHNOLOGIES, Inc

We are a dynamic technology start-up currently developing more than 100 innovative products and inventions with multiple utility patents field with USPTO.

We are seeking an experienced plastic injection mold makerย to join our engineering team in the research, development, optimization and launch of biodegradable and compostable plastics. This candidate will focus on mechanical and technical improvements for plastic extrusion, molding and other thermoforming processes to meet company goals.

Responsible for laying-out, building, fine-tuning and repairing injection molds.

Essential Duties and Responsibilities:

  • Competent, safe operation of manual milling machines and lathes
  • Programming, set-up and operation CNC milling machines, CNC WEDM machines (Charmilles and Sodick), CNC Die sinking EDM machines, Manual EDM machines, saws, surface grinders
  • 3 axis and 5 axis CNC operation
  • Interpret customer-supplied parts, drawings, and computer files
  • Mold layout, including materials, gates, vents, parting lines, overall size, shrinkage, heat transfer
  • Utilize any/all machine centers to achieve desired results
  • Fabricate high-quality injection molds
  • Meeting schedule commitments (on-time build)
  • Fine-tune molds based on feedback from molding department
  • Repair molds based on feedback from molding department
  • Conduct complicated mold maintenance as needed
  • T/R housekeeping, keep machine centers and personal tools orderly
  • Notify manager or project manager of any materials or tools required
  • Participate in corrective / preventive action reviews (assist production in troubleshooting)

PLEASE SUBMIT CURRENT RESUME AND COVER LETTER AND LET US KNOW HOW YOU CAN BENEFIT THE COMPANY WITH YOUR SKILLSET.

Compensation:

Salary bonus based on Performance

Qualifications

Essential Duties and Responsibilities:

  • Competent, safe operation of manual milling machines and lathes
  • Programming, set-up and operation CNC milling machines, CNC WEDM machines (Charmilles and Sodick), CNC Die sinking EDM machines, Manual EDM machines, saws, surface grinders
  • 3 axis and 5 axis CNC operation
  • Interpret customer-supplied parts, drawings, and computer files
  • Mold layout, including materials, gates, vents, parting lines, overall size, shrinkage, heat transfer
  • Utilize any/all machine centers to achieve desired results
  • Fabricate high-quality injection molds
  • Meeting schedule commitments (on-time build)
  • Fine-tune molds based on feedback from molding department
  • Repair molds based on feedback from molding department
  • Conduct complicated mold maintenance as needed
  • T/R housekeeping, keep machine centers and personal tools orderly
  • Notify manager or project manager of any materials or tools required
  • Participate in corrective / preventive action reviews (assist production in troubleshooting)
Additional Information

All your information will be kept confidential according to EEO guidelines.

Apply