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Plastic Injection Molding Jobs in Missouri (NOW HIRING)

LFP Associates

Quality Engineer

Kansas City, MO · On-site

$67K - $87K/yr

Our client is seeking an experienced Quality Engineer to ensure that plastic injection molded components meet all customer, internal, and regulatory requirements. This role supports production ...

US Farathane

Operations Manager

Riverside, MO · On-site

US Farathane is seeking an experienced Operations Manager who is responsible for leading all day-to-day manufacturing operations with an automotive plastic injection molding facility, ensuring safety ...

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Plastic Injection Molding information

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$11

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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.

Injection Molding Operator 8 Hrs. (3 Different Shifts)

Sika AG

Grandview, MO

$15.75 - $21/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 6 days ago

Job description

Company Description

About Sika 

With more than 100 years of experience, Sika is a worldwide innovation and sustainability leader in the development and production of systems and products for commercial and residential construction, as well as the transportation, marine, automotive, and renewable energy manufacturing industries.

Sika is a specialty chemicals company with a globally leading position in the development and production of systems and products for bonding, sealing, damping, reinforcing, and protection in the building sector and industry. Sika has subsidiaries in 103 countries around the world, produces in over 400 factories, and develops innovative technologies for customers worldwide. In doing so, it plays a crucial role in enabling the transformation of the construction and transportation industries toward greater environmental compatibility. Approximately 33,000 employees generated CHF 11.20 billion in sales in 2025.

Job Description

Injection Molding Operator (1st Shift:  7:00AM - 3:00PM) 8 Hrs.

Injection Molding Operator (2nd Shift:  3:00PM - 11:00PM) 8 Hrs.

Injection Molding Operator (3rd Shift:  11:00PM - 7:00AM) 8 Hrs.

To operate line/machine or inspect/pack finished good parts in a quality and timely manner.  Performs miscellaneous duties at supervisor's or team lead's request. 

  • Operate / running injection molding machines.
  • Responsible for quality, efficiency, and effectiveness of injection molding machine.
  • Adhere to all safety protocols, as well as, safely operating all required equipment.
  • Maintain a clean and safe work environment.
Qualifications
  • High School Diploma /GED
  • Forklift Certified (Optional)
  • Good Attendance
  • Must be able to meet the standard physical requirements.
  • Good oral communication, written, and math skills; Reliable transportation; Able to work in a team environment
  • Ability to wear a respirator
Additional Information

Perks & Benefits  

  • 401k with Generous Company Match 
  • Bonuses
  • Medical, Dental, and Vision Benefits
  • Paid Parental Leave
  • Life Insurance
  • Disability Insurance
  • Paid time off, Paid holidays
  • Floating holidays + Paid Volunteer Time
  • Wellness/Fitness Reimbursements
  • Education Assistance
  • Professional Development Opportunities
  • Employee Referral Program & More!

Sika fosters a culture of entrepreneurship, empowering each individual to make decisions, learn from experiences, and shape their own career path. The safety and well-being of employees are top priorities at Sika, with a strong commitment to open communication and maintaining a safe workplace. In addition, Sika actively contributes to the community and promotes sustainability by giving back, minimizing environmental impact, and embracing social responsibility.

We offer competitive salaries, aligned with local market benchmarks and the specific scope and responsibilities of each role. Compensation is determined based skills relevant to the position, education and/or training.  We are committed to fair and equitable pay practices in accordance with applicable laws and regulations.

Sika Corporation is committed to a work environment that supports, inspires, and respects all individuals that apply. As an equal opportunity employer Sika will consider all qualified applicants without discrimination on the basis of race, color, religion, sex, pregnancy, sexual orientation, gender identity, age, disability, national or ethnic origin, or other protected characteristics.

We offer competitive salaries, aligned with local market benchmarks and the specific scope and responsibilities of each role. Compensation is determined based skills relevant to the position, education and/or training.  We are committed to fair and equitable pay practices in accordance with applicable laws and regulations.

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