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Plastic Injection Mold Designer Jobs in Rancho Cucamonga, CA

M.R. Mold & Engineering

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Associate injection mold designer - Entry Level.

Brea, CA · On-site

$40K - $60K/yr

... plastic injection molding industry and gain hands-on, practical engineering experience. Key ... Collaboration & Support: Assist senior mold designers with modifying existing mold designs ...

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 start-up currently developing more than 100 innovative products and inventions with multiple ...

Pexco

Molding Operator 2nd shift

Yorba Linda, CA · On-site

$20/hr

... designing and manufacturing not only extruded plastic (commodity to high-performance) tubes and profiles through an expansive twelve-site footprint but also specializes in the injection molding of ...

TeamQuest Staffing

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Material Handler - Forklift & Injection Molding

Norco, CA · On-site

$25 - $30/hr

We are hiring an experienced Material Handler to support plastic injection molding and warehouse operations. This position ensures raw materials, colorants, regrind, and packaging supplies are ...

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 ...

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 ...

safariland

Product Designer

Ontario, CA · On-site

Design injection molded and thermo-formed plastic components with emphasis on moldability, manufacturability and efficiency for assembling of finished goods * Supply technical drawings and 3 ...

safariland

Product Designer

Ontario, CA

Design injection molded and thermo-formed plastic components with emphasis on moldability, manufacturability and efficiency for assembling of finished goods * Supply technical drawings and 3 ...

Key-Bak

Maintenance Technician

Ontario, CA · On-site

$30 - $36/hr

... and plastic injection molding machines to the building's facilities and infrastructure. This is a ... Global leader in retractable device solutions designed to keep your everyday essentials within ...

New

Safariland

Product Designer

Ontario, CA · On-site

$70K - $94K/yr

Design injection molded and thermo-formed plastic components with emphasis on moldability, manufacturability and efficiency for assembling of finished goods * Supply technical drawings and 3 ...

Kirkhill Inc.

Project Engineer

Brea, CA · On-site

$110K - $140K/yr

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.Strong ...

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All JobsPlastic Injection Mold Designer JobsPlastic Injection Mold Designer Jobs in Rancho Cucamonga, CA

Plastic Injection Mold Designer information

See Rancho Cucamonga, CA salary details

$19

$34

$46

How much do plastic injection mold designer jobs pay per hour?

As of Aug 24, 2026, the average hourly pay for plastic injection mold designer in Rancho Cucamonga, CA is $34.64, according to ZipRecruiter salary data. Most workers in this role earn between $25.29 and $42.74 per hour, depending on experience, location, and employer.

What does a plastic injection mold designer do?

A Plastic Injection Mold Designer is responsible for creating the detailed designs and specifications for molds used in the plastic injection molding process. They use computer-aided design (CAD) software to develop precise molds that ensure the efficient and accurate production of plastic parts. Their work involves understanding material properties, manufacturing processes, and collaborating with engineers and machinists to troubleshoot and improve mold designs. This role is crucial in industries like automotive, consumer goods, and medical devices where high-quality plastic components are required.

What are the key skills and qualifications needed to thrive as a plastic injection mold designer?

To thrive as a Plastic Injection Mold Designer, you need strong CAD proficiency, knowledge of mold design principles, materials science, and a background in mechanical engineering or a related field. Familiarity with software like SolidWorks, AutoCAD, and simulation tools, as well as experience with manufacturing processes, is typically required. Attention to detail, problem-solving abilities, and effective communication are standout soft skills in this role. These competencies are vital for creating efficient, cost-effective molds that meet client specifications and ensure high-quality production.

What are some common challenges faced by plastic injection mold designers in coordinating with manufacturing and engineering teams?

Plastic Injection Mold Designers often face challenges when translating design concepts into manufacturable molds that meet both engineering specifications and production efficiency goals. Effective communication with manufacturing and engineering teams is crucial, as design revisions may be needed to address issues like part tolerances, material selection, or tooling limitations. Designers must balance creativity with practicality, ensuring that molds are robust, cost-effective, and producible within the project's constraints. Regular collaboration and feedback loops help resolve potential conflicts and result in higher-quality outcomes.

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

AspectPlastic Injection Mold DesignerPlastic Mold Maker
CredentialsTechnical degree or certification in mold design or engineeringTechnical training or apprenticeship in mold fabrication
Work EnvironmentDesign offices, CAD software, collaboration with engineersManufacturing floor, machining, assembly of molds
Primary ResponsibilitiesDesigning mold components and layoutsBuilding and assembling molds based on designs

While both roles are essential in plastic injection molding, the Plastic Injection Mold Designer focuses on creating detailed mold designs using CAD software, whereas the Plastic Mold Maker physically constructs and assembles the molds based on those designs. The designer emphasizes planning and technical drawings, while the maker specializes in fabrication and assembly processes.

What are popular job titles related to Plastic Injection Mold Designer jobs in Rancho Cucamonga, CA?

For Plastic Injection Mold Designer jobs in Rancho Cucamonga, CA, the most frequently searched job titles are:

What job categories do people searching Plastic Injection Mold Designer jobs in Rancho Cucamonga, CA look for?

The top searched job categories for Plastic Injection Mold Designer jobs in Rancho Cucamonga, CA are:

Plastic Injection Mold Designer jobs near you
Infographic showing various Plastic Injection Mold Designer job openings in Rancho Cucamonga, CA as of August 2026, with employment types broken down into 78% Full Time, 16% Part Time, 1% Temporary, 4% Contract, and 1% Nights. Highlights an 86% Physical, 5% Hybrid, and 9% Remote job distribution, with an average salary of $72,045 per year, or $34.6 per hour.

Associate injection mold designer - Entry Level.

M.R. Mold & Engineering

Brea, CA • On-site

$40K - $60K/yr

Full-time

Medical, Retirement, PTO

Posted 7 days ago

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Job description

We are seeking a detail-oriented and motivated Associate Injection Mold Designer to join our engineering and manufacturing team. In this entry-level role, you will work closely with senior designers and engineers to translate product concepts into functional, manufacturable injection mold designs. This position is an excellent opportunity for a recent graduate with a foundational background in Computer-Aided Design (CAD) to launch a career in the plastic injection molding industry and gain hands-on, practical engineering experience.

Key Responsibilities

• CAD Drafting & Modeling: Utilize 3D CAD software to create precise technical drawings, detailed mold assemblies, and component designs based on engineering specifications.

• Collaboration & Support: Assist senior mold designers with modifying existing mold designs, updating engineering change notices (ECNs), and troubleshooting design challenges.

• Design for Manufacturability (DFM): Learn and apply foundational principles of injection molding, including core/cavity separation, draft angles, gating, runner systems, and cooling line layouts.

• Documentation Management: Maintain accurate project files, organize engineering documentation, and prepare bill of materials (BOM) lists for tool room fabrication.

• Cross-Functional Communication: Interface with the tool room, production team, and quality department to review design feasibility and support the successful build and sampling of new molds.

Required Qualifications

• Education: Minimum of a 2-year Associate Degree or technical certificate focusing on CAD Design, Mechanical Drafting, Manufacturing Technology, or a closely related field.

• Technical Skills: Foundational proficiency in mainstream 3D modeling software (such as SolidWorks, Autodesk Inventor, Creo, or NX) acquired through coursework or internships.

• Blueprints & Geometric Dimensioning: Solid understanding of technical drawing standards, blueprint reading, and a basic familiarity with Geometric Dimensioning and Tolerancing (GD&T).

• Core Competencies: Strong spatial reasoning, mathematical aptitude, and problem-solving skills with a high degree of attention to detail.

• Soft Skills: Eagerness to learn, strong communication skills, and a collaborative mindset suited for a fast-paced manufacturing environment. Preferred (But Not Required) Qualifications

• Prior internship, co-op, or hands-on experience in a machine shop or manufacturing environment. • Basic understanding of plastic materials, metallurgy, or manufacturing processes.

• Exposure to mold simulation software (e.g., Moldflow)

What We Offer

• Competitive entry-level salary and comprehensive benefits package (Medical, 401k).

• Opportunities for continuing education and advanced training in injection molding technologies.

• A clear path for career progression within our growing engineering


Company Description

M.R. Mold is known globally for its experience and expertise in the mold building industry. We have been building LSR and plastic injection molds since 1985. The company pays 75% of the employee's medical insurance and matching 401K donations at 10%. We value investing in our employees and helping them succeed and grow both personally and professionally. We'd love to have you join the M.R. Mold team.