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Plastic Injection Molding Jobs in Missouri (NOW HIRING)

LSI Staffing

Molding Technician

Liberty, MO · On-site

Senior Injection Molding Process Technician (Level III) Experienced Mold Setup & Process Technician Needed - Please Read Before Applying This is NOT an entry-level injection molding position. We are ...

LSI Staffing

Molding Technician

Grain Valley, MO

Senior Injection Molding Process Technician (Level III) Experienced Mold Setup & Process Technician Needed - Please Read Before Applying This is NOT an entry-level injection molding position. We are ...

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 ...

Aerotek

Set Up Technician

Lees Summit, MO · On-site

$53K - $56K/yr

Troubleshoot issues on plastic injection and blow molding equipment to minimize downtime. * Collaborate with production and maintenance teams to prioritize and complete equipment-related tasks.

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Plastic Injection Molding information

See Missouri salary details

$11

$17

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How much do plastic injection molding jobs pay per hour?

As of Aug 8, 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 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 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 85% Full Time, 9% Part Time, 3% Contract, and 3% Nights. Highlights an 97% Physical, 1% Hybrid, and 2% Remote job distribution, with an average salary of $35,821 per year, or $17.2 per hour.

Molding Technician

LSI Staffing

Liberty, MO • On-site

Part-time

This job post has expired today. Applications are no longer accepted.

Job description

Senior Injection Molding Process Technician (Level III)Experienced Mold Setup & Process Technician Needed – Please Read Before Applying

This is NOT an entry-level injection molding position.

We are seeking an experienced Injection Molding Process Technician (Level III) with hands-on expertise in mold changes, machine setup, process optimization, and troubleshooting. If your experience is primarily as a machine operator or production associate, this position is likely not the right fit.

Location: Orrick, MO
Pay: $27.00+  (Depending on Experience) More exp, more pay! 
Schedule: 1st Shift

We're Looking For Someone Who Has Experience With:
  • Performing complete mold changes from start to finish
  • Setting up and starting injection molding machines
  • Establishing and optimizing processing parameters
  • Troubleshooting molding defects and process issues
  • Programming and setting up robots
  • Improving cycle times while maintaining part quality
  • Installing and setting up auxiliary equipment
  • Training production operators
  • Basic mold maintenance including replacing inserts, ejector pins, springs, and fittings
  • Using forklifts and overhead cranes to install molds
Minimum Qualifications

Please apply only if you have:

  • 3+ years of hands-on experience as an Injection Molding Process Technician, Mold Technician, or Setup Technician
  • Experience performing mold changes independently
  • Experience setting and adjusting injection molding process parameters
  • Strong troubleshooting skills for molding defects and machine issues
  • Ability to start up new jobs and bring parts into specification without supervision

Preferred Experience

  • Scientific molding or process optimization
  • RJG, Decoupled Molding, or similar process training
  • Experience with robots and automation
  • Experience documenting and developing molding processes
Responsibilities
  • Complete mold changes and machine setups
  • Start up production jobs and verify quality
  • Optimize machine performance and cycle times
  • Troubleshoot processing and quality issues
  • Set up robots and auxiliary equipment
  • Train operators on production requirements
  • Perform minor mold and machine maintenance
  • Support continuous improvement initiatives
  • Maintain safety and quality standards
Physical Requirements
  • Lift up to 50 lbs.
  • Stand and walk throughout the shift
  • Work safely around forklifts, cranes, and manufacturing equipment
  • Wear required PPE
We Want to Hear From You If...

You have worked as an:

  • Injection Molding Process Technician
  • Injection Mold Setup Technician
  • Mold Technician
  • Process Technician
  • Senior Injection Molding Technician
  • Injection Molding Manufacturing Technician

This position is not intended for machine operators without mold setup and processing experience.

How to Apply

Apply directly through this posting.

Or visit us during walk-in hours:

Monday-Friday
9:00 AM-11:00 AM or 1:00 PM-3:30 PM

LSI Staffing
1625 Swift St
North Kansas City, MO 64116

You can also text 816-489-7850 to schedule an appointment. Please include the position you're applying for.

Or email your resume to lsinkc@lsistaffing.com with "Injection Molding Process Technician" in the subject line.

We look forward to speaking with qualified candidates!

PandoLogic. Keywords: Injection Molding Technician, Location: Liberty, MO - 64068 , PL: 603813215