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Polymer Engineering Jobs in California (NOW HIRING)

Purosil LLC

Polymer Materials Scientist

Corona, CA · On-site

Acts as a bridge between our scientists, engineers, customers, and operators with the world of ... years in polymer formulation development. * 5+ years in polymer manufacturing. * Superior data ...

Kodiak Sciences Inc.

Polymer Chemist

Palo Alto, CA

Our Antibody Biopolymer Conjugate Drug (ABCD) platform merges the fields of protein engineering, organic chemistry, and polymer chemistry and is at the core of our discovery engine. We are seeking a ...

Kodiak Sciences Inc.

Polymer Chemist

Palo Alto, CA

Our Antibody Biopolymer Conjugate Drug (ABCD) platform merges the fields of protein engineering, organic chemistry, and polymer chemistry and is at the core of our discovery engine. We are seeking a ...

Kodiak Sciences Inc

Polymer Chemist

Palo Alto, CA · On-site

Our Antibody Biopolymer Conjugate Drug (ABCD) platform merges the fields of protein engineering, organic chemistry, and polymer chemistry and is at the core of our discovery engine. We are seeking a ...

Verde Bioresins, Inc

Polymer Chemist

Fullerton, CA

$100K - $125K/yr

D. in Materials Science, Chemical Engineering, Chemistry, Polymer Science, or related field · ... Background/experience with mechanical, chemical and physical material testing techniques, such as ...

Starpath

Polymer Chemist - Space Solar

Hawthorne, CA · On-site

$125K - $200K/yr

Polymer Chemist - Space Solar Position Details Location: Los Angeles (Hawthorne), CA Employment ... Engineer moisture and oxygen barrier systems with ultra-low water vapor transmission rate (WVTR ...

Verde Bioresins, Inc

Sr Polymer Chemist

Fullerton, CA · On-site

$120K - $130K/yr

D. or Masters in Materials Science, Chemical Engineering, Chemistry, Polymer Science, or related field · Background/experience with mechanical, chemical and physical material testing techniques ...

Messina Talent Advisors

Be Seen First

Polymer Lab Technician

El Segundo, CA · On-site

$27 - $40/hr

The ideal candidate is a hands-on laboratory professional who will collaborate with chemists, scientists, and engineers to advance polymer research, formulation, testing, and scale-up projects. This ...

Adecco

Polymer Development Chemist

Sunnyvale, CA

$40/hr

Collaborate with manufacturing, engineering, quality, and R&D teams to successfully transfer new ... Serve as the polymer chemistry subject matter expert for manufacturing teams. Required ...

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All JobsPolymer Engineering JobsPolymer Engineering Jobs in California

Polymer Engineering information

See California salary details

$49.8K

$88.2K

$153K

How much do polymer engineering jobs pay per year?

As of Aug 4, 2026, the average yearly pay for polymer engineering in California is $88,160.00, according to ZipRecruiter salary data. Most workers in this role earn between $69,100.00 and $113,500.00 per year, depending on experience, location, and employer.

What are some common challenges faced by polymer engineers in product development projects?

Polymer engineers often encounter challenges such as selecting the right polymer material to meet specific performance and cost requirements, ensuring material compatibility, and addressing issues like degradation or unwanted reactions during processing. Coordinating with multidisciplinary teams—including design, manufacturing, and quality assurance—can also present hurdles, as each group may have different priorities or technical constraints. Staying current with the latest advancements in sustainable and high-performance polymers is essential, as regulations and market demands frequently evolve.

What is polymer engineering?

Polymer engineering is a branch of engineering that focuses on the design, analysis, and modification of polymer materials, which are long-chain molecules used to create plastics, rubbers, and other synthetic materials. Polymer engineers work with these materials to develop new products, improve manufacturing processes, and solve problems related to material properties and performance. Their work is crucial in industries such as automotive, aerospace, packaging, electronics, and healthcare, where polymer-based materials are widely used.

What is the difference between Polymer Engineering vs Materials Science?

AspectPolymer EngineeringMaterials Science
Required CredentialsBachelor's or Master's in Polymer Engineering or Chemical EngineeringBachelor's or Master's in Materials Science or Engineering
Work EnvironmentManufacturing plants, R&D labs, product developmentResearch labs, manufacturing, academia
Industry UsagePlastic, rubber, polymer product industriesBroad industries including metals, ceramics, polymers
Common Search/ComparisonPolymer Engineering careers, Polymer Engineer rolesMaterials Science careers, Materials Engineer roles

Polymer Engineering focuses specifically on the design, development, and manufacturing of polymer-based materials, often within plastics and rubber industries. Materials Science covers a broader range of materials, including metals, ceramics, and polymers, emphasizing fundamental properties and applications. While both fields share similar credentials and work environments, Polymer Engineering is more specialized in polymer products, making it the more relevant comparison for those interested in polymer-specific careers.

What can polymer engineers do?

Polymer engineers design, develop, and test polymer materials and products used in various industries such as automotive, healthcare, and packaging. They work on improving material properties, processing techniques, and manufacturing methods, often utilizing tools like CAD software and laboratory testing. Their role involves research, problem-solving, and ensuring product quality and safety standards.

What are the key skills and qualifications needed to thrive as a polymer engineer?

To thrive as a Polymer Engineer, you need a solid background in polymer science, materials engineering, and chemistry, typically supported by a relevant bachelor's or master's degree. Familiarity with analytical instruments (such as FTIR, DSC, and rheometers), CAD software, and industry standards is often required, along with certifications like Six Sigma being advantageous. Strong problem-solving abilities, attention to detail, and effective teamwork and communication skills set outstanding professionals apart. These competencies are crucial for developing innovative polymer products, ensuring quality, and driving process improvements in manufacturing or research environments.
What are the most commonly searched types of Polymer Engineering jobs in California? The most popular types of Polymer Engineering jobs in California are:
What are popular job titles related to Polymer Engineering jobs in California? For Polymer Engineering jobs in California, the most frequently searched job titles are:
What job categories do people searching Polymer Engineering jobs in California look for? The top searched job categories for Polymer Engineering jobs in California are:
What cities in California are hiring for Polymer Engineering jobs? Cities in California with the most Polymer Engineering job openings:
Polymer Engineering jobs near you
Infographic showing various Polymer Engineering job openings in California as of July 2026, with employment types broken down into 88% Full Time, 8% Part Time, and 4% Contract. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution, with an average salary of $88,160 per year, or $42.4 per hour.

Sr Research Engineer - Polymer Materials

James Hardie

Fontana, CA • On-site

$120K - $135K/yr

Other

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 2 hours ago

James Hardie rating

8.2

Company rating: 8.2 out of 10

Based on 38 frontline employees who took The Breakroom Quiz

87th of 536 rated manufacturers

Job description

James Hardie is the industry leader in exterior home and outdoor living solutions, with a portfolio that includes fiber cement, fiber gypsum, composite and PVC decking and railing products. Our family of trusted brands includes Hardie, TimberTech, AZEK Exteriors, Versatex, fermacell, and StruXure.
With over 8,000 employees and our U.S. operating entities headquartered in Chicago, we boast 31 operating sites, 6 recycling facilities, and 6 research and development centers globally. Powered by a dynamic workforce, we're united by our purpose of Building a Better Future for All through sustainable innovation, a Zero Harm culture, and a commitment to empowering our people and communities.
For more information, visit www.jameshardie.com.

Summary

This position can be based at our Wilmington, OH or Fontana, CA plant

The Senior Research Engineer / Scientist - Polymer Materials will support the development, optimization, and deployment of PVC material technologies for highperformance, durable building products. This role requires deep fundamentals in polymer science and polymer engineering, with emphasis on PVC chemistry, physics, processing, and structure-property-process relationships, bridging laboratory research and manufacturing implementation.

What You'll Do:

Key Responsibilities

Polymer Formulation & Materials Development

Develop, optimize, and evaluate PVC formulations, including base resins, stabilizer systems, lubricants, impact modifiers, process aids, fillers, and pigments. Apply fundamental polymer science and engineering principles (polymer thermodynamics, viscoelasticity, molecular weight effects, phase behavior, and degradation mechanisms) to guide formulation design. Demonstrate strong understanding of PVCspecific behavior, including fusion/gelation, thermal stability, shear sensitivity, rheology, and morphology development. Establish and interpret structure-property-processing relationships to balance durability, mechanical performance, surface quality, and manufacturability. Conduct laboratoryscale compounding, extrusion, and molding to support new product, cost, and sustainability initiatives. Drive AI assisted material characterizations and formulation development. 

Process & Manufacturing Support

Support PVC extrusion and compounding processes, including formulationdriven troubleshooting of surface defects, instability, degradation, dimensional control, and throughput limitations. Apply polymer processing fundamentals (heat transfer, shear and elongational flow, residence time, die swell, cooling, and orientation effects) to diagnose and resolve manufacturing issues. Partner with manufacturing, quality, and process engineering teams to scale laboratory formulations to robust, highyield production. Support pilotscale and plant trials. 

Testing & Characterization

Design and execute experimental plans using thermal, mechanical, rheological, and environmental characterization techniques (DSC, TGA, DMA, rheometry, weathering, impact, tensile, flexural). Interpret data using firstprinciples understanding of polymer behavior and PVC material response. Maintain high standards for documentation and technical rigor. 

Project Management & Technical Communication

Plan and execute technical projects with defined scope and milestones. Communicate complex polymer concepts clearly through written reports and presentations. Collaborate with suppliers and internal stakeholders. 

What You'll Bring:

Required Qualifications 

PhD in Polymer Science, Polymer Engineering, Materials Science, or Chemical Engineering with 0-7 years of experience, or MS with 3-10 years of experience.  

Strong fundamental knowledge of polymer chemistry and polymer engineering. Deep understanding of PVC materials including stabilization chemistry, fusion behavior, degradation mechanisms, and extrusion processing.  

Experience in AI assisted material characterizations and formulation development for composite materials. 

Strong written and verbal communication skills. 

Travel -35% (mainly domestic) 

Preferred Qualifications 

Handson experience with PVC compounding, extrusion, or formulation development. Experience supporting highvolume manufacturing or pilotscale operations. Familiarity with building materials and durability requirements. 

What You'll Receive:

As of the date of this posting, a good faith estimate of the current pay scale for this position is $120,000 - $135,000.  Placement in the range depends on several factors such as experience, skills, geography and internal equity and may change over time. This position qualifies for benefits and you will be eligible to participate in a bonus plan.

At James Hardie, we recognize that our success depends on our people. We've worked hard to build a generous and competitive benefits program that demonstrates our commitment to our employees.

  • Compensation: competitive salary and bonus eligibility
  • Insurance: day-one health coverage medical, dental, vision, life insurance
  • Paid Time Off: vacation and company holidays
  • Retirement: 401(k) with 6% match
  • Investments: Employee Stock Purchase plan (ESP)
  • Work-Life Balance: parental leave, wellness programs
  • Purpose. Impact. Community: Sustainability Initiatives | James Hardie
  • More: Click here to learn more about our benefits

Build a Better Future for All - Apply now!

#LI-MB22

James Hardie Building Products Inc. is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, gender, sex, age, national origin, religion, sexual orientation, gender identity/expression, genetic information, veteran's status, marital status, pregnancy, disability, or any other basis protected by law.
James Hardie will comply with any applicable state and local laws regarding employee leave benefits, including, but not limited to providing time off pursuant to the Colorado Healthy Families and Workplaces Act, in accordance with its plans and policies.
The position responsibilities outlined above are in no way to be construed as all encompassing. Other duties, responsibilities, and qualifications may be required and/or assigned as necessary.

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