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Plastic Injection Molding Jobs in Seattle, WA (NOW HIRING)

Trelleborg Group

Injection Mold Processor

Renton, WA · On-site

$32 - $40/hr

Monday to Thursday, 5:30am to 4:00pm Education and Experience: * 3+ years of plastic injection molding experience required. * Experience or familiarity with scientific molding processes preferred.

DEMGY PACIFIC

Injection Molding Manager

Tacoma, WA · On-site

Understanding of the entire product lifecycle from concept to production and beyond • Proficient knowledge and use of MRP and ERP systems in relation to plastic injection molding and tooling • ...

Aerotek

Injection Mold Technician

Tacoma, WA

$59K - $72K/yr

Experience with injection molding machines and plastic production. Why Work Here? Join a dynamic team where your skills are valued, and your contributions make a difference. We offer a collaborative ...

Aerotek

Setup Technician (Injection Molding)

Tacoma, WA

$49K - $63K/yr

Setup Technician (Injection Molding) We are seeking a skilled Setup Technician for our injection molding department. The ideal candidate will be responsible for installing tooling dies, ensuring ...

VAUPELL INDUSTRIAL

Molding Machine Operator

Everett, WA · On-site

$20 - $22/hr

We are the global market leader in plastic components and assemblies for aircraft interiors while ... Position Purpose Responsible for operation of injection molding machines and related equipment in ...

DEMGY PACIFIC

Molding Technician I

Tacoma, WA · On-site

$28.75 - $34.75/hr

POSITION SUMMARY This position's responsibility is to sustain operation, at an optimum level, of the Injection Molding Production Department. Performed with efficiency, cleanliness, and punctuality.

Meta

CMF Developer

Seattle, WA · On-site

$144K - $204K/yr

... plastic injection molding processes, metal fabrication techniques, resin development, coating technologies, plastics decoration processes, fabrics and textiles • Experience working directly with ...

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All JobsPlastic Injection Molding JobsPlastic Injection Molding Jobs in Seattle, WA

Plastic Injection Molding information

See Seattle, WA salary details

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How much do plastic injection molding jobs pay per hour?

As of Aug 4, 2026, the average hourly pay for plastic injection molding in Seattle, WA is $20.89, according to ZipRecruiter salary data. Most workers in this role earn between $17.50 and $23.51 per hour, depending on experience, location, and employer.

What is plastic injection molding?

Plastic injection molding is a manufacturing process used to produce parts by injecting molten plastic material into a mold. The process involves melting plastic pellets, injecting the liquid into a custom-designed mold cavity, and then cooling the material until it solidifies into the final shape. This method is widely used due to its ability to produce high volumes of identical parts with complex shapes and fine details. It's commonly used in industries such as automotive, consumer goods, electronics, and medical devices.

What are some common challenges faced by plastic injection molding technicians, and how can they be addressed?

Plastic Injection Molding Technicians often encounter challenges such as machine downtime, material inconsistencies, and maintaining product quality. Addressing these requires strong troubleshooting skills, attention to detail, and good communication with maintenance and quality control teams. Proactively inspecting equipment, adhering to preventive maintenance schedules, and collaborating closely with engineers help minimize defects and ensure efficient production. Continuous learning and staying updated with new molding technologies also support long-term success in this role.

What are the key skills and qualifications needed to thrive as a plastic injection molding technician?

To thrive as a Plastic Injection Molding Technician, you need a solid understanding of manufacturing processes, mechanical aptitude, and familiarity with material properties, usually supported by a high school diploma or technical certification. Proficiency in using injection molding machines, process control software, and quality inspection tools is essential. Attention to detail, problem-solving skills, and effective communication help you stand out in this role. These skills ensure the efficient production of high-quality parts, minimize downtime, and maintain safety and productivity on the manufacturing floor.

What is the difference between Plastic Injection Molding vs Plastic Mold Designer?

AspectPlastic Injection MoldingPlastic Mold Designer
Primary RoleManufactures plastic parts by injecting molten plastic into moldsDesigns and develops molds used in plastic injection molding processes
Required SkillsMachine operation, material knowledge, quality controlCAD design, mold design, engineering principles
Work EnvironmentFactories, manufacturing plantsDesign studios, engineering offices
CertificationsMachine operation, safety certificationsCAD software certifications, engineering credentials

While Plastic Injection Molding involves the actual manufacturing of plastic parts, Plastic Mold Designers focus on creating the molds used in this process. Both roles are essential in the plastic manufacturing industry, with overlapping skills in engineering and design, but they differ in daily tasks and work environments.

What are popular job titles related to Plastic Injection Molding jobs in Seattle, WA? For Plastic Injection Molding jobs in Seattle, WA, the most frequently searched job titles are:
What job categories do people searching Plastic Injection Molding jobs in Seattle, WA look for? The top searched job categories for Plastic Injection Molding jobs in Seattle, WA are:
Plastic Injection Molding jobs near you
Infographic showing various Plastic Injection Molding job openings in Seattle, WA as of July 2026, with employment types broken down into 1% As Needed, 85% Full Time, 8% Part Time, 1% Temporary, 3% Contract, and 2% Nights. Highlights an 95% Physical, 2% Hybrid, and 3% Remote job distribution, with an average salary of $43,459 per year, or $20.9 per hour.

Injection Mold Processor

Trelleborg Healthcare & Medical Tustin

Renton, WA

$32 - $40/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 6 days ago

Job description

At Trelleborg every part made allows us to make a difference. Founded in 1905, Trelleborg is an international organization operating within the multitude of industries including aerospace, automotive, medical, industrial, and food, water and beverage. Our manufacturing team is focused on creating parts needed in the aerospace industry. 

Summary of the Role: 

As an Injection Mold Processor, you will set up and operate injection molding machines to produce high-quality plastic parts. You will monitor production, inspect parts for quality, troubleshoot process issues, perform basic machine maintenance, and help ensure production, quality, and safety standards are met. Working closely with the manufacturing team, you will support efficient operations and continuous improvement efforts.

 

Tasks and Responsibilities: 

  • Issue and dry materials for production jobs.
  • Set molds and tooling using an overhead crane.
  • Process and operate injection molding machines using scientific molding techniques.
  • Perform visual and dimensional inspections using measuring tools and inspection equipment.
  • Trim gates, remove flashing, and perform part marking as required.
  • Troubleshoot molding processes and perform minor machine maintenance.
  • Operate a forklift to move molds, materials, and finished products throughout the facility.
  • Maintain a clean and organized work area while supporting 5S initiatives.
  • Collaborate with team members to support continuous improvement efforts and production goals.

Schedule: Monday to Thursday, 5:30am to 4:00pm 

Education and Experience: 

  • 3+ years of plastic injection molding experience required.
  • Experience or familiarity with scientific molding processes preferred.
  • Strong understanding of plastics processing principles and techniques.
  • Ability to safely operate an overhead crane for mold changes.
  • Ability to safely operate a forklift.
  • Experience using measuring tools to inspect molded parts.
  • Strong attention to detail with the ability to multitask and problem-solve.
  • Basic reading, writing, math, and computer skills.
  • Effective communication skills and the ability to work in a team environment.
  • Ability to lift up to 55 pounds regularly throughout the workday.

The final compensation offered to the candidate may be based on geographical location, work experience and/or skill level. Additions to the compensation packing, including but not limited to paid time off, insurance benefits and 401(k) eligibility, will be outlined at the time of the job offer.

Compensation range: $32.00-40.00/hour

  • 401(k) matching
  • Dental insurance
  • Employee assistance program
  • Health insurance
  • Life insurance
  • Paid time off
  • Tuition reimbursement
  • Vision insurance

As an EEO/Affirmative Action Employer all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran or disability status.

This position requires the use of information which is subject to the International Traffic in Arms Regulations (ITAR). All applicants must be U.S. persons within the meaning of ITAR. ITAR defines a U.S. person as a U.S. Citizen, U.S. Permanent Resident (i.e. Green Card Holder), Political Asylee or Refugee. 

All applicants must successfully complete a background check and drug screening as a condition of employment.

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