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Plastic Process Engineer Jobs in California (NOW HIRING)

Sr. Supplier Process Engineer

Sunnyvale, CA · On-site

$122K - $157K/yr

... plastic injection molding experience along with skills to select and develop suppliers. Roles ... engineering change order process • Own and drive to closure supplier variances from symptom ...

Sr. Supplier Process Engineer

Sunnyvale, CA

$122K - $157K/yr

... plastic injection molding experience along with skills to select and develop suppliers. Roles ... the engineering change order process Own and drive to closure supplier variances from symptom ...

... class plastic tooling. Lead tool design and build, tool and process development and tool ... Train engineers at supplier plants in Asia to utilize new tooling materials and fabrication ...

Train engineers at supplier plants in Asia to utilize new tooling materials and fabrication ... Lens and optical tooling experience Experience in developing plastic processing parameters.

... class plastic tooling. Lead tool design and build, tool and process development and tool ... Train engineers at supplier plants in Asia to utilize new tooling materials and fabrication ...

Train engineers at supplier plants in Asia to utilize new tooling materials and fabrication ... Lens and optical tooling experience Experience in developing plastic processing parameters.

Engineer V

Poway, CA · On-site

$105K - $189K/yr

We have an exciting opportunity for a Staff Material and Process Engineer with our ASI Division ... plastics, paints, adhesives/sealants, etc.), manufacturing processes (machining, heat treatment ...

Engineer V

Poway, CA · On-site

$105K - $189K/yr

Provide Materials Engineering support for Mechanical Engineering Department for * Large Unmanned ... plastics, paints, adhesives/sealants, etc.), manufacturing processes (machining, heat treatment ...

Join a Growing Injection Molding Team at Ambrit Engineering! We are a growing Southern California plastic injection molding manufacturer seeking experienced Process Technicians with strong ...

... including plastic extrusion, braiding, coiling, coating and plastic injection molding. Our new ... Knowledge of precision machining, laser processing, engineered materials technology & clean room ...

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Showing results 1-20

Plastic Process Engineer information

See California salary details

$48.9K

$90.8K

$140.6K

How much do plastic process engineer jobs pay per year?

As of Jul 17, 2026, the average yearly pay for plastic process engineer in California is $90,813.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,500.00 and $101,700.00 per year, depending on experience, location, and employer.

What are some common challenges faced by Plastic Process Engineers in optimizing manufacturing processes?

Plastic Process Engineers often encounter challenges such as maintaining consistent product quality while scaling up production, troubleshooting equipment malfunctions, and minimizing material waste. They must continuously monitor and adjust processing parameters like temperature, pressure, and cycle time to ensure efficiency and compliance with specifications. Collaboration with design, quality, and maintenance teams is crucial to quickly resolve issues and implement process improvements. Staying updated with new materials and technologies also plays a key role in overcoming these challenges and advancing in the field.

What does a Plastic Process Engineer do?

A Plastic Process Engineer is responsible for designing, developing, and optimizing processes involved in the manufacturing of plastic products. They work with various types of plastic materials and molding technologies, such as injection molding, extrusion, and blow molding. Their duties often include troubleshooting production issues, improving process efficiency, ensuring product quality, and collaborating with design and production teams to implement best practices. They also play a key role in selecting materials, setting process parameters, and maintaining compliance with safety and environmental regulations.

What is the difference between Plastic Process Engineer vs Plastic Technician?

AspectPlastic Process EngineerPlastic Technician
CredentialsBachelor's degree in plastics engineering, chemical engineering, or related fieldTechnical diploma or associate degree in plastics technology or related field
Work EnvironmentDesign, optimize, and oversee manufacturing processes in production facilitiesOperate and maintain plastic processing equipment on the production floor
ResponsibilitiesProcess development, troubleshooting, and process improvementMachine setup, operation, and quality checks

The Plastic Process Engineer focuses on designing and improving plastic manufacturing processes, requiring a higher level of education and analytical skills. In contrast, the Plastic Technician handles day-to-day machine operation and maintenance. Both roles are essential in the plastics industry, but they differ in scope and responsibilities.

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

To thrive as a Plastic Process Engineer, you need a solid background in chemical or mechanical engineering, polymer science, and process optimization, often backed by a relevant degree. Familiarity with CAD software, injection molding machines, statistical process control (SPC), and certifications like Six Sigma are commonly required. Strong problem-solving abilities, attention to detail, and effective communication skills help you collaborate with cross-functional teams and drive continuous improvement. These competencies ensure efficient production, high product quality, and innovation in plastic manufacturing environments.
What are popular job titles related to Plastic Process Engineer jobs in California? For Plastic Process Engineer jobs in California, the most frequently searched job titles are:
Infographic showing various Plastic Process Engineer job openings in California as of July 2026, with employment types broken down into 92% Full Time, 4% Part Time, 1% Temporary, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $90,813 per year, or $43.7 per hour.
Process Engineer III (82290)

Process Engineer III (82290)

THE GILL CORPORATION

El Monte, CA • On-site

Full-time

Re-posted 2 days ago


Job description

Who we are:

The Gill Corporation is one of the world's largest manufacturers of honeycomb, high performance floor panels, cargo compartment liners and original equipment for passenger and freighter aircraft. The company also excels in many other types of reinforced plastics including interior sandwich panels for creating structures such as aircraft galleys and bulkheads, honeycomb core and related products.

The Gill Corporation is seeking a Process Engineer III to manage specific projects/ tasks associated with continuous improvement and/ or production sustainment; perform experiments and tests; record experimental data; make calculations and prepare brief reports covering the work and conducting risk assessments. The expectations of a level III Process Engineer is to lead with excellent communication, measure their own performance and implement remedial actions where needed. Will work directly with operating entities and Program Management to ensure that process control analyses, inspections, or audits are conducted on a continuing basis to enforce requirements and meet specifications. Most critically, spends a dedicated amount of time on the production floor inspecting and assessing where process improvement or Six Sigma/ DMAIC methodologies can be applied.

Reporting to the Operations Engineering Group Leader, they will perform but not be limited to the following responsibilities.

Responsibilities:

  • Spends a dedicated amount of time on the production floor inspecting and assessing where process improvement can be applied.
  • Develop and/or improve processes for the manufacture of new or existing products.
  • Work with cross-functional teams (primarily Quality and Production) in leading efforts in improving product quality and customer satisfaction.
  • Conduct root cause analysis and implement countermeasures to prevent failure recurrence.
  • Develop and implement concepts, including Lean Manufacturing, etc., to reduce manufacturing cost and increase process throughput.
  • Create/manage manufacturing documentation, and provide technical oversight to bring high priority projects to a successful conclusion including training.
  • Lead complex manufacturing trials supported by detailed data analysis and recommend appropriate next steps.
  • Work in a proactive manner to manage the technical direction of assigned manufacturing areas, in concert with the overall technical direction of the site.
  • Manage and continuously seek improvements to the processing of engineering flow down requirements to better quality, lead-times, or cost.
  • Capable of providing guidance and assistance to less experienced Process Engineers.
  • Capable of managing a higher project workload and be able to adjust quickly as business priorities change.
  • Other essential duties may be assigned.

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and/or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Required Qualifications:

  • B.S. degree in Engineering or Science (Chemical, Mechanical, Material Science, Aerospace, Manufacturing, or Industrial Engineering fields) 4 to 6 years working experience in a manufacturing or laboratory environment
  • Excellent verbal and written communication skills
  • Strong mechanical aptitude and hands on mentality
  • Ability to adjust to continuously shifting priorities
  • Proficient computer skills - Microsoft suite (Word, Excel, PowerPoint, Project)
  • Comfortable working on and around equipment and using proper PPE
  • Ability to adjust to continuously shifting priorities
  • Experience with composite materials and/or material sciences a plus
  • Programming experience a plus (VBA, C or C++, etc.)
  • CAD experience a plus (CATIA, Solidworks, AutoCAD, etc.)
  • SAP experience a plus
  • Knowledge of Lean Manufacturing principles a plus
  • Minitab software experience a plus

Preferred Skills/Certifications:

  • Six Sigma Green Belt
  • PMP Certification (Project Management Professional)
  • OSHA
  • CMfgE Certification (Certified Manufacturing Engineer) 

ITAR Requirement:

This position requires access to information that is subject to compliance with the International Traffic Arms Regulations (ITAR) and/or the Export Administration Regulations (EAR). In order to comply with the requirements of the ITAR and/or the EAR, applicants will be asked to provide specific documentation to verify U.S. person status under the ITAR and the EAR. A U.S. person according to their definition is a U.S. citizen, U.S. lawful permanent resident (green card holder), or protected individual such as a refugee, or asylee.

The Gill Corporation is an Equal Opportunity Employer. Applicants for all job openings are welcome and will be considered without regard to race, religious creed, color, age, sex, gender identity, gender expression, genetic information, sexual orientation, national origin, religion, marital status, medical condition, physical or mental disability, military service, pregnancy, childbirth and related medical conditions, or any other classification protected by federal, state, and local laws and ordinances.

The Gill Corporation provides reasonable accommodations to qualified individuals with disabilities in accordance with the Americans with Disability Act and applicable state and local law. If you require an accommodation in the application process, please notify the Human Resources Department.