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Plastic Injection Molding Jobs in Missouri (NOW HIRING)

HiFyve

Process Technician

Lees Summit, MO · On-site

$25 - $27/hr

High School Diploma or GED preferred Knowledge, Skills, and Abilities: * 2+ years of plastic injection molding processing experience required (Husky equipment experience a plus). * Strong ...

US Farathane Corporation

Quality Engineer

Riverside, MO · On-site

$69K - $89K/yr

US Farathane is seeking an experienced Quality Engineer for ensuring that plastic injection molded components meet all customer, internal, and regulatory requirements. This role supports production ...

US Farathane

Quality Engineer

Riverside, MO · On-site

$69K - $89K/yr

US Farathane is seeking an experienced Quality Engineer for ensuring that plastic injection molded components meet all customer, internal, and regulatory requirements. This role supports production ...

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Plastic Injection Molding information

See Missouri salary details

$11

$17

$23

How much do plastic injection molding jobs pay per hour?

As of Sep 2, 2026, the average hourly pay for plastic injection molding in Missouri is $17.22, according to ZipRecruiter salary data. Most workers in this role earn between $14.42 and $19.38 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 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 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 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 the most commonly searched types of Plastic Injection Molding jobs in Missouri?

The most popular types of Plastic Injection Molding jobs in Missouri are:

What are popular job titles related to Plastic Injection Molding jobs in Missouri?

For Plastic Injection Molding jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Plastic Injection Molding jobs in Missouri look for?

The top searched job categories for Plastic Injection Molding jobs in Missouri are:

What cities in Missouri are hiring for Plastic Injection Molding jobs?

Cities in Missouri with the most Plastic Injection Molding job openings:

Plastic Injection Molding jobs near you
Infographic showing various Plastic Injection Molding job openings in Missouri as of August 2026, with employment types broken down into 94% Full Time, and 6% Nights. Highlights an 100% In-person job distribution, with an average salary of $35,821 per year, or $17.2 per hour.

Design Engineer

American Plastics, LLC

Jefferson City, MO • On-site

Full-time

Medical, Dental, Retirement, PTO

Re-posted 26 days ago

Job description

Description:

American Plastics, headquartered in St. Louis, Missouri, is a leading designer and manufacturer of innovative plastic-injection molded products for the household & garage storage and commercial cleaning end-markets.


We are seeking a skilled Design Engineer specializing in plastics to join our team at our Innovation Center, in Jefferson City, Missouri location. The ideal candidate will be responsible for designing and developing plastic components and products, ensuring functionality, manufacturability, and cost-effectiveness. The role involves collaborating with cross-functional teams, utilizing CAD software, and staying updated on industry trends and technologies. This position will report to the Vice President of Engineering.


· Product Design: Conceptualize, design, and develop plastic components and products according to project requirements, considering factors such as functionality, aesthetics, manufacturability, and cost-effectiveness.


· CAD Modeling: Utilize CAD software (e.g., SolidWorks, CATIA) to create detailed 3D models and 2D drawings of plastic parts and assemblies.


· Prototyping: Oversee the prototyping process, including selecting appropriate materials, collaborating with prototype technicians, and validating designs for fit, form, and function.


· Material Selection: Evaluate and select suitable plastic materials based on performance requirements, environmental factors, and cost considerations.


· Design Optimization: Continuously improve designs for efficiency, performance, and cost reduction through analysis, simulation, and testing.


· Manufacturability: Collaborate with manufacturing teams to ensure designs are optimized for production processes such as injection molding, extrusion, and thermoforming.


· Quality Assurance: Work closely with quality control teams to establish and implement quality standards for plastic components and products, ensuring compliance with industry regulations.


· Documentation: Prepare and maintain comprehensive design documentation, including technical drawings, specifications, and design change records.


· Cross-functional Collaboration: Collaborate effectively with cross-functional teams including product management, manufacturing, quality assurance, and procurement to achieve project goals and deadlines.


· Research and Innovation: Stay updated on industry trends, emerging technologies, and best practices in plastic design, and incorporate innovative solutions into product development processes.

Requirements:

• Bachelor’s degree in mechanical or plastics Engineering.

• Experience of hands-on injection molding experience a plus.

• 3 + Years experience with Product Design of plastic injection molded products for consumer packaged goods

• SolidWorks knowledge.

• Experience with prototyping techniques and rapid iteration processes.

• Excellent problem-solving skills and attention to detail.

• Effective communication and collaboration skills with the ability to work in cross-functional teams.

• Familiarity with design for manufacturability (DFM) and design for assembly (DFA) principles.

• Ability to prioritize tasks and manage multiple projects simultaneously.

• Strong communication skills.



If you are interested in joining the American Plastics team and want to work in a fast-paced, progressive environment, we want to hear from you. We offer a competitive salary, full benefit package including medical/dental, 401k, and paid vacation.