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Senior Polymer Engineer Jobs in Seattle, WA (NOW HIRING)

Materials Engineer

Everett, WA · On-site

$159K - $208K/yr

You'll partner closely with senior engineers and cross functional teams to translate results into ... Lead failure investigations on structural and polymer-based insulation systems and related ...

Learn more about the company's Customized Polymer , Sustainable Fiber , Durable Metal , and ... The SBU Engineering Manager (SEM) is a senior engineering leader responsible for balancing business ...

Senior Materials Chemist

Everett, WA · On-site

$200K - $236K/yr

This role sits at the intersection of chemistry, materials science, and hardware engineering, and ... polymer swelling/attack, and contamination transport * Develop test conditions that reflect ...

Senior Materials Chemist

Everett, WA · On-site

$120 - $180/hr

This role sits at the intersection of chemistry, materials science, and hardware engineering, and ... polymer swelling/attack, and contamination transport * Develop test conditions that reflect ...

Senior Polymer Engineer information

See Seattle, WA salary details

$67.7K

$144K

$208.8K

How much do senior polymer engineer jobs pay per year?

As of Aug 25, 2026, the average yearly pay for senior polymer engineer in Seattle, WA is $144,025.00, according to ZipRecruiter salary data. Most workers in this role earn between $118,900.00 and $163,300.00 per year, depending on experience, location, and employer.

What is a senior polymer engineer?

Senior Polymer Engineers are experienced professionals who specialize in the design, development, and testing of polymer materials and products. They apply advanced knowledge of chemistry, materials science, and engineering principles to create polymers used in a wide range of industries, such as automotive, medical devices, packaging, and electronics. In addition to technical expertise, they often lead teams, manage projects, and collaborate with clients or other departments to solve complex materials challenges. Their role is crucial in advancing new materials and improving the performance, durability, and sustainability of polymer-based products.

What are the typical responsibilities of a senior polymer engineer in a manufacturing environment?

As a Senior Polymer Engineer in a manufacturing setting, you can expect to lead projects focused on developing new polymer materials or optimizing existing ones for specific applications. Your responsibilities often include designing experiments, analyzing material properties, troubleshooting production issues, and guiding junior engineers or technicians. You’ll frequently collaborate with R&D, quality assurance, and production teams to ensure materials meet performance and regulatory standards. Additionally, you may interact with clients or suppliers to align material specifications with product requirements.

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

To thrive as a Senior Polymer Engineer, a deep understanding of polymer science, materials engineering, and process optimization is essential, typically supported by a degree in chemical or materials engineering and relevant industry experience. Familiarity with simulation software (e.g., MATLAB, ANSYS), laboratory analysis tools (e.g., DSC, TGA), and knowledge of industry standards or Six Sigma certification are highly valued. Strong problem-solving abilities, leadership, and effective communication skills are crucial for leading projects and collaborating across multidisciplinary teams. These skills ensure the development of innovative materials and efficient processes, driving product quality and organizational success.

What is the difference between Senior Polymer Engineer vs Polymer Scientist?

AspectSenior Polymer EngineerPolymer Scientist
Required CredentialsBachelor's or Master's in Polymer Engineering, Materials Science, or related field; experience in polymer design and processingTypically a Master's or PhD in Chemistry, Materials Science, or Polymer Science; strong research background
Work EnvironmentDesign, develop, and optimize polymer products in manufacturing or R&D settingsConducts fundamental research, experiments, and analysis in labs or academic settings
Employer & Industry UsageUsed in manufacturing companies, R&D labs, and industries focused on polymer productsCommon in research institutions, universities, and advanced R&D departments

The main difference is that Senior Polymer Engineers focus on applying engineering principles to develop and improve polymer products in industrial settings, while Polymer Scientists primarily conduct research to understand polymer properties and create new materials. Both roles require strong technical credentials, but their work environments and objectives differ.

What cities near Seattle, WA are hiring for Senior Polymer Engineer jobs?

Cities near Seattle, WA with the most Senior Polymer Engineer job openings:

Infographic showing various Senior Polymer Engineer job openings in Seattle, WA 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 $144,025 per year, or $69.2 per hour.

Senior Consultant (Polymers)

Seattle, WA • On-site

Engineering Systems Inc
Industrial Machinery Manufacturing • 201 - 500 employees

$120K - $180K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 10 days ago


Job description

About ESi

Engineering Systems Inc. (ESi) is an engineering and scientific investigation and failure analysis firm. We are frequently retained by law firms, insurance companies, and manufacturers to answer complex technical questions on projects ranging from small, focused investigations to large-scale, high-profile losses.


Our work spans a wide range of challenges, including major transportation accidents, equipment and product failures, personal injury claims, and damage to residential, commercial, and industrial structures. The variety, complexity, and real-world impact of our projects create deeply fulfilling and intellectually engaging careers for our consultants.


At ESi, you’ll have the opportunity to shape your own path while being supported by a collaborative culture, national expertise, and industry-leading resources.


Why ESi

ESi’s Materials Practice focuses on hands-on failure analysis and advanced material characterization across industries. With access to a network of in-house laboratories, engineers evaluate material behavior and performance in a collaborative environment that emphasizes technical rigor and continuous development.


Key Responsibilities

  • Plans, directs, and coordinates forensic investigations involving polymer and plastics failure analysis, material characterization, and product liability.
  • Performs laboratory analysis and field inspections related to polymer, rubber, adhesive, and composite material failures.
  • Conducts root cause failure analysis on polymer components, systems, and consumer products.
  • Authors high-quality technical reports and expert opinions.
  • Provides expert testimony at deposition and trial.
  • Conducts well-developed and well-prepared client presentations.
  • Establishes work plan and staffing for each phase of project, and arranges for assignment of project personnel.
  • Directs and coordinates projects within prescribed schedule and budget scopes.
  • Works with Business Development to identify potential clients and strategies to build client base.
  • Actively participates in Business Development activities, including client meetings, presentations, and appropriate conferences.
  • Mentors earlier-career employees in growth and development.
  • Actively seeks to develop professionally in skills, experience, and industry reputation.

Qualifications

Education / Certifications / Licenses Required

  • Bachelor’s degree in Polymer Science, Materials Science, Chemical Engineering, or related field required; Master’s or Ph.D. strongly preferred.
  • Licensed Professional Engineer (P.E.) preferred, or willingness to obtain.

Experience Required

  • 10–15 years of experience in polymer/plastics materials analysis, failure investigation, or related research or industry role.
  • Deep hands-on laboratory experience with polymer characterization techniques (FTIR, DSC, SEM, GPC, tensile testing, etc.).
  • Track record authoring high-quality technical reports and/or peer-reviewed publications.
  • Experience providing expert testimony highly desirable; preferred experience in the consulting industry.

Other Technical & Non-Technical Skills

  • Proficiency in Microsoft Office suite; familiarity with polymer characterization and analysis software/equipment.
  • Strong verbal and written communication skills; ability to communicate complex polymer and materials science topics clearly to non-technical audiences.
  • Ability to interact with clients professionally and develop business internally and externally.
  • Must be available to travel occasionally as part of the national practice.

What We Can Offer You

We believe great work happens when people feel supported, challenged, and trusted. Some of the benefits we offer include:


  • Medical, Dental & Vision
  • Life Insurance/Voluntary Life Insurance/Universal Life Insurance
  • 401k with employer match
  • Pet Insurance
  • Competitive salary with merit-based or annual bonus programs
  • Flexible Time Off (FTO) – encouraged to take 20 days of paid time off/year
  • 10 paid holidays (9 standard holidays and 1 floating holiday)
  • Work/Life Balance in a collaborative working environment
  • Wellness Reimbursement
  • Career Growth & Continuing education opportunities

The pay range listed reflects a good-faith estimate of the compensation we expect to offer most candidates for this role. Total compensation includes a competitive base salary and bonus opportunity, with final pay determined by job-related factors such as experience, qualifications, individual performance, and overall company performance.


After internal discussions and market research, the current pay band for this opportunity is $120,000 to $180,000.

Physical Demands

This role requires frequently sitting or standing for extended periods of time and occasionally lifting and/or moving items weighing up to 50 pounds, with infrequent lifting up to 75 pounds. The work regularly requires bending, twisting, kneeling, crouching, and maintaining balance. This position frequently requires handling and operating specialized tools and equipment and working in a variety of physical positions, including occasionally accessing tight or confined spaces. The physical demands described here are representative of those that must be met to successfully perform the essential functions of this position. Reasonable accommodations may be made to enable individuals with disabilities to perform these essential functions.

Work Environment

Work is performed in both office and field environments, including active construction sites, industrial settings, and damaged or compromised structures. The work environment may include exposure to varying noise levels, weather conditions, uneven terrain, and site-specific hazards. Use of personal protective equipment (PPE) may be required depending on site conditions. The work environment characteristics described here are representative of those an employee may encounter while performing the essential functions of this position. Reasonable accommodations may be made to enable individuals with disabilities to perform these essential functions.


To all recruitment agencies: ESi does not accept unsolicited resumes from search firms or agencies. Any resume submitted to any employee of ESi without a prior written search agreement will be considered unsolicited and the property of ESi. Please, no phone calls or emails.

ESi is an equal opportunity employer committed to attracting and retaining the most qualified individuals based on merit, experience, and skills. Employment decisions are made without regard to race, ethnicity, color, religion, national origin, sex, sexual orientation, age, disability, or veteran status. In accordance with applicable laws, ESi actively supports the employment of veterans and individuals with disabilities.