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Plastic Engineer Jobs in Wisconsin (NOW HIRING)

A. O. Smith Corporation

Polymer Engineer

Milwaukee, WI · On-site

This role will serve as the organization's Subject Matter Expert for plastics, rubbers, elastomers, and other polymeric materials used in water heating and water treatment equipment. The engineer ...

A. O. Smith Corporation

Polymer Engineer

Milwaukee, WI · On-site

This role will serve as the organization's Subject Matter Expert for plastics, rubbers, elastomers, and other polymeric materials used in water heating and water treatment equipment. The engineer ...

MGS Mfg. Group, Inc

Process Engineer

Richfield, WI · On-site

As a Process Engineer at MGS, you will be responsible for the upkeep of equipment and processes to ... Aids in the development of plastic processing project instructions to ascertain test specifications ...

A.O. Smith

Polymer Engineer

Milwaukee, WI · On-site

This role will serve as the organization's Subject Matter Expert for plastics, rubbers, elastomers, and other polymeric materials used in water heating and water treatment equipment. The engineer ...

FLAMBEAU, Inc.

Project Engineer

Baraboo, WI · On-site

Description Flambeau, Inc is a Plastics Manufacturer that has been established for over 75 years ... The Project Engineer acts as a liaison between the customer and all internal departments to ensure ...

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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.

Mold Mechanic - Plastic Injection Molding

West Bend, WI

Comar Engineering Services
See more jobs at Comar Engineering Servicesexternal

Full-time

Re-posted yesterday

Job description

Mold Mechanic

Position Details

  • Employment Type: Full-time
  • Shift: Open to 1st and 2nd
  • Hours: Flexible

What You’ll Do

  • Maintain various types of molds by performing the proper mold break down, cleaning and preventive maintenance.
  • Inspect and perform precision measurements of molds and tooling components and compare to print specification.
  • Prepare and operate variety of machine tools, such as but not limited to, radial drill press, lathes, milling machines, band/table saw and sand blasters, to machine metal work pieces usually on custom basis.
  • Fabricate advanced metallic and nonmetallic parts, and fit and assemble machined parts into complete units.
  • Read and interpret blueprints, sketches, drawings, manuals, specifications, or sample parts.
  • Measure, mark, and write dimensions and reference points on material or work piece as guides for subsequent machining.

Required Qualifications

  • High school diploma or GED.
  • 3+ years’ work experience in setting up and operation of Lathes, manual mill, drill press, grinders sand blaster and other machining equipment.
  • 3+ years’ experience using calipers, micrometers, depth gauges and other precision measuring equipment.
  • Advanced knowledge of mechanics, shop mathematics, metal properties

Preferred Qualifications

  • Vocational or trade school in related trade.
  • 5 years’ experience with troubleshooting and building plastic injection molds.

    Apply