Mold Operator

St. LouisArnold, MO
Onsite

About The Position

We are seeking an experienced Mold Setter to join a fast-paced manufacturing team in Arnold, MO. This is not an entry-level position — candidates must have hands-on injection molding experience and be comfortable performing mold changes, machine setup, troubleshooting, and supporting production efficiency. This is a great opportunity for someone looking to join a stable manufacturing environment and grow their long-term career in plastics manufacturing.

Requirements

  • Previous Injection Molding experience
  • Prior experience as a Mold Setter, Process Technician, or Injection Mold Technician
  • Experience performing mold changes and machine setup independently
  • Ability to troubleshoot molding defects and process issues
  • Comfortable reading work instructions and production documentation
  • Mechanical aptitude and strong attention to detail
  • Ability to lift molds/tools and work in a manufacturing environment
  • Reliable transportation required

Responsibilities

  • Perform mold changes/setups on injection molding machines safely and efficiently
  • Set and adjust machine parameters to ensure quality production output
  • Start up and shut down molding machines as needed
  • Troubleshoot molding process issues and make process adjustments to reduce downtime
  • Install and remove molds, connect water lines, air lines, and auxiliary equipment
  • Verify first-piece quality and support production teams during startup
  • Monitor machine performance and maintain cycle times
  • Work closely with production and quality teams to meet schedules and quality standards
  • Perform routine preventive maintenance and maintain a clean work area
  • Follow all safety and manufacturing procedures
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