ZipRecruiter

Log In

1

Plastic Injection Molding Machine Operator Jobs in Arnold, MO

EnviroPAK

Molding Machine Operator

Earth City, MO

$15.50 - $18.50/hr

The ideal candidate will be responsible for operating a type of molded pulp machinery, specifically a 1-face, 2-face, or 4-face rotary die mold machine in accordance with EnviroPAK quality ...

Pretium Packaging

Technical Manager

Saint Louis, MO · On-site

$48.08 - $69.71/hr

Technical Manager - Plastics Manufacturing (Blow & Injection Molding) Relocation Assistance ... Mentor, train, and elevate a team of technicians and machine operators while building a strong ...

Serioplast

Plastic Extrusion Operator

Saint Louis, MO · On-site

Serioplast , a Global Leader in Rigid Plastic Packaging , is Looking for a Injection Molding ... Carry out the electromechanical installation and setup of machines and equipment (compressors, air ...

Serioplast

Plastic Extrusion Operator

Saint Louis, MO · On-site

Operate and monitor the machine and its parts to ensure efficiency and quality, and support experts ... Good knowledge of plastic molding technologies, specifically extrusion blow molding (EBM). * Good ...

next page

Showing results 1-20

All JobsPlastic Injection Molding Machine Operator JobsPlastic Injection Molding Machine Operator Jobs in Arnold, MO

Plastic Injection Molding Machine Operator information

See Arnold, MO salary details

$10

$16

$20

How much do plastic injection molding machine operator jobs pay per hour?

As of Aug 11, 2026, the average hourly pay for plastic injection molding machine operator in Arnold, MO is $16.11, according to ZipRecruiter salary data. Most workers in this role earn between $14.47 and $17.26 per hour, depending on experience, location, and employer.

What is a plastic injection molding machine operator?

A Plastic Injection Molding Machine Operator is responsible for setting up, operating, and monitoring injection molding machines used to produce plastic parts. They ensure machines run efficiently, troubleshoot issues, perform quality checks, and maintain a clean work environment. Operators may also adjust machine settings, replace molds, and inspect finished products for defects. Their role is essential in manufacturing industries that produce plastic components for automotive, medical, and consumer goods.

What does a plastic injection molding machine operator do during a typical shift?

As a Plastic Injection Molding Machine Operator, your typical shift will involve setting up and monitoring injection molding machines, inspecting finished products for quality, and performing minor equipment maintenance as needed. You will often work on your feet for extended periods in a manufacturing environment and may rotate between day, evening, or overnight shifts depending on the employer. Teamwork is important, as you'll frequently collaborate with supervisors, quality control personnel, and other machine operators to meet production goals. Staying vigilant and responsive to machine alarms or quality issues is a key part of the daily routine.

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

To thrive as a Plastic Injection Molding Machine Operator, you need a good understanding of machine operation, mechanical aptitude, attention to detail, and a high school diploma or equivalent. Familiarity with industry-standard molding machines, quality inspection tools, and safety protocols, as well as certificates in manufacturing or machine operation, are often advantageous. Strong problem-solving skills, teamwork, and effective communication help individuals excel in this role. These abilities ensure efficient production runs, high-quality products, and a safe, collaborative work environment.

What cities near Arnold, MO are hiring for Plastic Injection Molding Machine Operator jobs? Cities near Arnold, MO with the most Plastic Injection Molding Machine Operator job openings:
Plastic Injection Molding Machine Operator jobs near you
Infographic showing various Plastic Injection Molding Machine Operator job openings in Arnold, MO as of August 2026, with employment types broken down into 71% Full Time, 17% Part Time, and 12% Nights. Highlights an 100% In-person job distribution, with an average salary of $33,499 per year, or $16.1 per hour.

Injection Molding Machine Operator

Sinclair & Rush, Inc.

Fenton, MO • On-site

$15.25 - $20.50/hr

Full-time

Re-posted 6 days ago

Sinclair & Rush rating

7.5

Company rating: 7.5 out of 10

Based on 6 frontline employees who took The Breakroom Quiz

Job description

The Position:
Seeking an Injection Molding Machine Operator at our Fenton, MO Facility.
Requirements:
  • Must be able to work well in a team
  • Experience in injection and or manufacturing a plus
  • Must be mechanically inclined and able to lift 50 lbs
  • Ability to follow instructions and work independently with little guidance
  • Ability to stand or walk for extended periods of time and to bend to lift heavy materials.
  • Willingness to work flexible hours, including overtime
  • Able to work 2nd or 3rd shift

View benefits and submit your application

What Sinclair & Rush employees say

Pay

Benefits

Hours and flexibility

Workplace

Get the full story on Breakroom

Apply