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Plastic Engineer Jobs in Wisconsin (NOW HIRING)

MOLDED RUBBER & PLASTIC LLC

Process Engineer

Butler, WI · On-site

$90K - $105K/yr

The Process Engineer, reporting directly to the Plant Manager, requires a technical education in Plastics Engineering, Engineering or Polymer Science and experience applying a scientific approach to ...

Plastic Ingenuity

Quality Engineer

Cross Plains, WI · On-site

$72K - $93K/yr

Plastic Ingenuity is committed to providing innovative, high-quality packaging for the food, healt ... A quality engineer works to ensure the overall quality of manufactured parts. They test processes ...

SEEK Careers Staffing

Plastics Technician

Saukville, WI · On-site

$22 - $25/hr

Cincinnati Milacron presses (16) with CAM programming (Virtual Gibbs). Company manufactures for ... Mechanical mindset with a good understanding of molding plastic. Monitor & insure press utilization ...

McDonald Plastic Molding

Process Engineer

Cuba City, WI · On-site

McDonald Plastic Molding is a subsidiary of A.Y. McDonald Industries, and has been operating since ... Maintains documentation for existing projects * Assist the Engineering team in quoting new business ...

McDonald Plastic Molding

Process Engineer

Cuba City, WI · On-site

McDonald Plastic Molding is a subsidiary of A.Y. McDonald Industries, and has been operating since ... Maintains documentation for existing projects * Assist the Engineering team in quoting new business ...

McDonald Plastic Molding

Process Engineer

Cuba City, WI · On-site

McDonald Plastic Molding is a subsidiary of A.Y. McDonald Industries, and has been operating since ... Maintains documentation for existing projects * Assist the Engineering team in quoting new business ...

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All JobsPlastic Engineer JobsPlastic Engineer Jobs in Wisconsin

Plastic Engineer information

See Wisconsin salary details

$36.8K

$65.9K

$109.5K

How much do plastic engineer jobs pay per year?

As of Sep 14, 2026, the average yearly pay for plastic engineer in Wisconsin is $65,876.00, according to ZipRecruiter salary data. Most workers in this role earn between $49,000.00 and $80,200.00 per year, depending on experience, location, and employer.

What does a plastic engineer do?

A Plastic Engineer specializes in designing, developing, and manufacturing products made from plastic materials. They work with various types of plastics to create items ranging from packaging and consumer goods to automotive parts and medical devices. Their responsibilities may include selecting the appropriate plastic material, optimizing manufacturing processes, ensuring product quality, and considering environmental impacts such as recyclability. Plastic Engineers often collaborate with other engineers and designers to innovate and improve plastic products.

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

To thrive as a Plastic Engineer, you need a solid background in polymer science, material properties, and design engineering, typically supported by a degree in chemical, materials, or plastic engineering. Familiarity with CAD software, simulation tools, injection molding machinery, and relevant industry certifications like Six Sigma or PMP is often required. Strong problem-solving skills, attention to detail, and effective communication help distinguish top professionals in this field. These competencies ensure the development of high-quality, cost-effective plastic products and successful collaboration with manufacturing and design teams.

What are the typical challenges a plastic engineer faces when scaling up from prototype to mass production?

Plastic Engineers often encounter challenges when transitioning a design from prototype to large-scale manufacturing, such as material selection discrepancies, maintaining consistent quality, and optimizing mold design for efficiency. Balancing cost-effectiveness with durability and performance is crucial, as even minor design changes can have significant impacts on production time and expenses. Collaborating closely with design, production, and quality assurance teams helps address these challenges and ensures a smooth scale-up process.

What is the difference between Plastic Engineer vs Materials Scientist?

AspectPlastic EngineerMaterials Scientist
CredentialsBachelor's or Master's in Plastic Engineering, Polymer Science, or related fieldsBachelor's or Master's in Materials Science, Chemistry, or Physics
Work EnvironmentManufacturing plants, R&D labs, product design facilitiesResearch labs, academia, industrial R&D
Industry UsagePlastic product development, injection molding, extrusionMaterial development, testing, and analysis across various materials

Plastic Engineers focus on designing, developing, and testing plastic products and processes, often working directly in manufacturing settings. Materials Scientists study the properties and behaviors of various materials, including plastics, to innovate and improve materials across industries. While both roles require knowledge of polymers, Plastic Engineers are more application-oriented, whereas Materials Scientists are research-focused.

Plastic Engineer jobs near you
Infographic showing various Plastic Engineer job openings in Wisconsin as of September 2026, with employment types broken down into 5% Internship, 85% Full Time, and 10% Contract. Highlights an 95% In-person, and 5% Hybrid job distribution, with an average salary of $65,876 per year, or $31.7 per hour.

Process Engineer

Butler, WI • On-site

MOLDED RUBBER & PLASTIC LLC
See more jobs at MOLDED RUBBER & PLASTIC LLCexternal

$90K - $105K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted yesterday

Job description

Description:

PROCESS ENGINEER

Full time, Exempt

Butler, WI

All candidates must complete a Culture Index at https://go.cultureindex.com/p/tmCLInawx6sDFYiA1T


Join MRPC: Build What’s Next in Medical Technology


Make an impact. Grow your career. Shape the future of healthcare.

At MRPC, you’ll do more than manufacture products—you’ll help create technologies that improve and save lives around the world, maybe even someone you know.


With more than 100 years of manufacturing expertise, MRPC is a growing leader in medical device manufacturing, supporting advanced technologies like robotic-assisted surgery and next-generation healthcare solutions.


Here, you’ll have the opportunity to work with advanced technology, solve meaningful challenges, grow your skills, and turn great ideas into action. We’re investing in our people, technology, and facilities—and creating opportunities for talented individuals to grow with us.


Join MRPC and build a career with purpose.


POSITION SUMMARY:

We are looking for dedicated Process Engineers for our manufacturing locations. This is an exciting hands-on opportunity to partner with site management and collaborate with the manufacturing and project teams to oversee the implementation of new processes. The position requires a highly talented, results-oriented person to focus on production launches and variation reduction initiatives.

The Process Engineer, reporting directly to the Plant Manager, requires a technical education in Plastics Engineering, Engineering or Polymer Science and experience applying a scientific approach to molding. This position will provide process and technical support in processing a wide range of thermoplastic materials.

Ensures new products are "ready for production" prior to release with up front input to Tooling,

Cross functional participation with Installation Qualification (IQ), Operational Qualification (OQ) and ownership of Performance Qualification (PQ).

Develops and trains production staff in work methods, troubleshooting, and problem solving.

A minimum of five years of molding experience, of which a good portion has been in the application of scientific molding principles.

Benefits:

  • 401(k)
  • 401(k) matching
  • Dental insurance
  • Employee assistance program
  • Health insurance
  • Health savings account
  • Life insurance
  • Paid time off
  • Professional development assistance
  • Retirement plan
  • Tuition reimbursement
  • Vision insurance

Education:

  • Bachelor's (Required)

Experience:

  • Plastics injection molding: 5 years (Required)
  • Manufacturing: 5 years (Preferred)

Work Location: In person


MRPC is an Affirmative Action Equal Opportunity Employer: Minorities, Women, Veterans, & Disabilities.

#MRPCJOBS

Requirements:


Apply