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Molding Engineer Jobs in Riverside, CA (NOW HIRING)

NPI Mold Design Engineer

Irvine, CA · On-site

$115K - $171K/yr

Define material selections, molding parameters, and processing requirements for new connector ... Partner with Manufacturing Engineering and Production teams to troubleshoot tooling, part quality ...

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Molding Engineer information

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$43.8K

$86.2K

$130.9K

How much do molding engineer jobs pay per year?

As of Jun 10, 2026, the average yearly pay for molding engineer in Riverside, CA is $86,243.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,600.00 and $91,300.00 per year, depending on experience, location, and employer.

What is the difference between Molding Engineer vs Tooling Engineer?

AspectMolding EngineerTooling Engineer
Primary FocusDesign, develop, and optimize molding processes for manufacturing plastic or metal partsDesign, develop, and maintain tools and dies used in manufacturing processes
Required SkillsKnowledge of molding machines, materials, process parametersExpertise in tool design, CAD/CAM, and machining
Work EnvironmentManufacturing plants, quality labsTool rooms, machine shops, manufacturing facilities
Common CertificationsManufacturing or process engineering certificationsTool design, CAD/CAM certifications

While both roles are integral to manufacturing, Molding Engineers focus on the overall molding process and product quality, whereas Tooling Engineers specialize in designing and maintaining the tools used in production. Both roles require technical skills and often collaborate to ensure efficient manufacturing operations.

What are the key skills and qualifications needed to thrive as a Molding Engineer, and why are they important?

To thrive as a Molding Engineer, you need a strong background in mechanical or manufacturing engineering, with expertise in injection molding processes and materials science, often supported by a relevant engineering degree. Familiarity with CAD software, mold flow analysis tools, and quality control systems is typically required, along with certifications like Six Sigma or RJG Master Molder. Problem-solving, attention to detail, and effective communication are crucial soft skills for collaborating with cross-functional teams and ensuring process optimization. These skills and qualifications are vital for producing high-quality molded products efficiently and maintaining consistent manufacturing standards.

What are some common challenges a Molding Engineer faces when optimizing production processes?

Molding Engineers often encounter challenges such as maintaining consistent quality across large production runs, minimizing cycle times, and troubleshooting defects like warping or sink marks. They must also balance material costs with performance requirements and adapt to changes in tooling or equipment. Effective collaboration with production teams, tool designers, and quality assurance is essential to identify root causes and implement solutions quickly, ensuring smooth and efficient operations.

What are Molding Engineers?

Molding Engineers are specialized professionals who design, develop, and optimize molding processes used to manufacture parts and products, typically from plastics or other moldable materials. They work with various molding techniques, such as injection molding, compression molding, and blow molding, to ensure quality, efficiency, and cost-effectiveness in production. Their responsibilities include selecting appropriate materials, designing molds, troubleshooting defects, and improving existing processes. Molding Engineers often collaborate with product designers, quality engineers, and production teams to meet manufacturing goals.
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Liquid Silicone Rubber Injection Mold designer

M.R. Mold & Engineering Corp

Brea, CA

$60K - $80K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Posted 24 days ago


Job description


M.R. Mold & Engineering Corp. for 37 years has specialized in tight-tolerance, flash less LSR, rubber and plastic prototype, production, and micro injection molds for medical and dental applications, including implantables, masks, and hearing aid products. Other industries served include aerospace, consumer products, and fluid handling. We are currently looking for an experienced Liquid Silicone Rubber Injection Mold Designer in the Orange County area.
Responsibilities:
  • Controlled revision changes per Engineering Change Orders
  • Ability to create simple/ and often complex 3D models using Creo
  • Create Bill of materials, Detail and Assy drawings per ANSI Y14.5 using primarily Creo and occasionally AutoCAD.
  • Works with engineering and the sales team to determine part design and/or modifications
  • Evaluates design based on design function, materials, manufacturing methods, production cost and customer specifications
  • Can read and understand customer supplied part drawings with emphasis on material callouts, dimensions and associated tolerances.
  • Ability to interface with customers, suppliers and vendors via email and /or by phone.
  • Assist team members with miscellaneous duties as required
  • Responsible for completing tasks according to engineering schedule
  • Training is available for recent graduates that possess exceptional skills.
Qualifications:
  • Strong knowledge of Solidworks or Creo for designing parts/assemblies
  • Must demonstrate strong ability to create drawings for both parts and assemblies in Solidworks or Creo
  • Working knowledge of Solidworks/Pro E tools such as standard features, as well as sheet metal, weldments, mold tools, and piping, 
  • Excellent communication and interpersonal skills
  • Mechanically oriented, or hands on capable.
Compensation and Benefits:
  • 80% paid medical insurance
  • Dental and Vision offered
  • 10% match for employee 401K
  • Paid Holidays and Vacation.