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Plastic Injection Molding Jobs in Rancho Cucamonga, CA

Ezonyx Bio Technologies

Injection Mold Maker

Brea, CA

Plastic Injection Mold Maker (Los Angeles) EZONYX BIO TECHNOLOGIES, Inc We are a dynamic technology ... This candidate will focus on mechanical and technical improvements for plastic extrusion, molding ...

Ezonyx Bio Technologies

Injection Mold Maker

Brea, CA · On-site

Plastic Injection Mold Maker (Los Angeles) EZONYX BIO TECHNOLOGIES, Inc We are a dynamic technology ... This candidate will focus on mechanical and technical improvements for plastic extrusion, molding ...

Partners Personnel

Plastic Molder

Anaheim, CA · On-site

$23 - $28/hr

Catheter Injection Molding * Must have experience with machine operator * Operate and monitor plastic molding machines. * Load materials and remove finished molded parts. * Inspect products for ...

New

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

$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 ...

INA Solution Inc

Project Engineer

Brea, CA · On-site

Experience with injection molded plastic components. * Proficiency in 3D CAD software (SolidWorks, CATIA, or equivalent). * Ability to create and interpret detailed 2D engineering drawings and GD&T.

Pexco

Operator

Yorba Linda, CA · On-site

$20/hr

Job Location Yorba Linda, CA 6am-2:30pm mon-fri $20.00 an hour DOE The Molding Operator is responsible for operating and monitoring plastic injection molding machines to produce high-quality ...

Honor Plastics & Molding

Maintenance Technician

Pomona, CA · On-site

$30 - $32/hr

Knowledge of hydraulic and electric trouble shoot * basic knowledge of plastic processing. * Troubleshoot problems with injection molding machines and their auxiliary equipment. * Perform mechanical ...

Honor Plastics & Molding

Maintenance Technician

Pomona, CA · On-site

$30 - $32/hr

Knowledge of hydraulic and electric trouble shoot * basic knowledge of plastic processing. * Troubleshoot problems with injection molding machines and their auxiliary equipment. * Perform mechanical ...

HiFyve

Electro-Mechanical Technician

Fontana, CA · On-site

$34 - $42/hr

On-site - Fontana, CA Position Overview We are hiring an Electro-Mechanical Technician to support the Injection Molding Department at a leading plastics manufacturing facility in Fontana, CA . This ...

Honor Plastics & Molding

Tool Room Machinist

Pomona, CA · On-site

$22 - $25/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Basic knowledge of Injection molding and mold maintenance * Tagging and placing molds in assigned locations/ assigning molds to new locations. * Assisting tool room manager in mold change overs ...

Honor Plastics & Molding

Tool Room Machinist

Pomona, CA · On-site

$22 - $25/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Basic knowledge of Injection molding and mold maintenance * Tagging and placing molds in assigned locations/ assigning molds to new locations. * Assisting tool room manager in mold change overs ...

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All JobsPlastic Injection Molding JobsPlastic Injection Molding Jobs in Rancho Cucamonga, CA

Plastic Injection Molding information

See Rancho Cucamonga, CA salary details

$12

$18

$26

How much do plastic injection molding jobs pay per hour?

As of Aug 13, 2026, the average hourly pay for plastic injection molding in Rancho Cucamonga, CA is $18.76, according to ZipRecruiter salary data. Most workers in this role earn between $15.72 and $21.11 per hour, depending on experience, location, and employer.

What is plastic injection molding?

Plastic injection molding is a manufacturing process used to produce parts by injecting molten plastic material into a mold. The process involves melting plastic pellets, injecting the liquid into a custom-designed mold cavity, and then cooling the material until it solidifies into the final shape. This method is widely used due to its ability to produce high volumes of identical parts with complex shapes and fine details. It's commonly used in industries such as automotive, consumer goods, electronics, and medical devices.

What are some common challenges faced by plastic injection molding technicians, and how can they be addressed?

Plastic Injection Molding Technicians often encounter challenges such as machine downtime, material inconsistencies, and maintaining product quality. Addressing these requires strong troubleshooting skills, attention to detail, and good communication with maintenance and quality control teams. Proactively inspecting equipment, adhering to preventive maintenance schedules, and collaborating closely with engineers help minimize defects and ensure efficient production. Continuous learning and staying updated with new molding technologies also support long-term success in this role.

What are the key skills and qualifications needed to thrive as a plastic injection molding technician?

To thrive as a Plastic Injection Molding Technician, you need a solid understanding of manufacturing processes, mechanical aptitude, and familiarity with material properties, usually supported by a high school diploma or technical certification. Proficiency in using injection molding machines, process control software, and quality inspection tools is essential. Attention to detail, problem-solving skills, and effective communication help you stand out in this role. These skills ensure the efficient production of high-quality parts, minimize downtime, and maintain safety and productivity on the manufacturing floor.

What is the difference between Plastic Injection Molding vs Plastic Mold Designer?

AspectPlastic Injection MoldingPlastic Mold Designer
Primary RoleManufactures plastic parts by injecting molten plastic into moldsDesigns and develops molds used in plastic injection molding processes
Required SkillsMachine operation, material knowledge, quality controlCAD design, mold design, engineering principles
Work EnvironmentFactories, manufacturing plantsDesign studios, engineering offices
CertificationsMachine operation, safety certificationsCAD software certifications, engineering credentials

While Plastic Injection Molding involves the actual manufacturing of plastic parts, Plastic Mold Designers focus on creating the molds used in this process. Both roles are essential in the plastic manufacturing industry, with overlapping skills in engineering and design, but they differ in daily tasks and work environments.

What are popular job titles related to Plastic Injection Molding jobs in Rancho Cucamonga, CA? For Plastic Injection Molding jobs in Rancho Cucamonga, CA, the most frequently searched job titles are:
What job categories do people searching Plastic Injection Molding jobs in Rancho Cucamonga, CA look for? The top searched job categories for Plastic Injection Molding jobs in Rancho Cucamonga, CA are:
What cities near Rancho Cucamonga, CA are hiring for Plastic Injection Molding jobs? Cities near Rancho Cucamonga, CA with the most Plastic Injection Molding job openings:
Plastic Injection Molding jobs near you
Infographic showing various Plastic Injection Molding job openings in Rancho Cucamonga, CA 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 $39,026 per year, or $18.8 per hour.

Injection Mold Maker

Ezonyx Bio Technologies

Brea, CA

Full-time

Re-posted 14 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 Maker (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 maker 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