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Plastic Injection Mold Jobs in Missouri (NOW HIRING)

US Farathane

Operations Manager

Riverside, MO

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 ...

US Farathane

Manufacturing Engineering Manager

Riverside, MO · On-site

$106K - $132K/yr

Prefer plastic injection molding (part design and processing) experience * Automated and plastic materials experience * Strong technical project management, manufacturing engineering, statistical ...

Serioplast

Plastic Extrusion Operator

Saint Louis, MO · On-site

Serioplast , a Global Leader in Rigid Plastic Packaging , is Looking for a Injection Molding Technician for the plants in St. Louis, Missouri! Are you a professional technologist looking for an ...

Serioplast

Plastic Extrusion Operator

Saint Louis, MO · On-site

Serioplast , a Global Leader in Rigid Plastic Packaging , is Looking for a Injection Molding Technician for the plants in St. Louis, Missouri! Are you a professional technologist looking for an ...

USF

Manufacturing Engineering Manager

Riverside, MO · On-site

$110 - $150/hr

Prefer plastic injection molding (part design and processing) experience. * Automated and plastic materials experience. * Strong technical project management, manufacturing engineering, statistical ...

New

US-Farathan

Manufacturing Engineering Manager

Riverside, MO · On-site

$110 - $150/hr

Prefer plastic injection molding (part design and processing) experience * Automated and plastic materials experience * Strong technical project management, manufacturing engineering, statistical ...

New

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Plastic Injection Mold information

What is a plastic injection mold?

Plastic injection molds are specialized tools used in the injection molding process to shape molten plastic into specific forms and parts. They are typically made from durable metals like steel or aluminum and are designed to withstand high pressures and temperatures. The mold consists of two main halves that come together to form a cavity, which is then filled with melted plastic and cooled to produce the final product. Injection molds are commonly used in mass manufacturing of plastic components for industries such as automotive, consumer goods, and electronics.

What are the key skills and qualifications needed to thrive as a plastic injection mold technician?

To thrive as a Plastic Injection Mold Technician, you need a strong understanding of manufacturing processes, mechanical aptitude, and experience with mold setup and maintenance, often supported by technical training or an associate degree. Familiarity with CNC machines, injection molding equipment, and quality control systems, as well as certifications like RJG or Paulson, is highly beneficial. Attention to detail, problem-solving, and teamwork are crucial soft skills for addressing production challenges and ensuring consistent quality. These skills and qualifications are essential for maintaining efficient production, minimizing defects, and meeting safety and quality standards in a manufacturing environment.

What is the difference between Plastic Injection Mold vs Plastic Mold Technician?

AspectPlastic Injection MoldPlastic Mold Technician
Primary RoleDesign, develop, and manufacture plastic molds for injection molding processesOperate, troubleshoot, and maintain plastic molds during production
Required SkillsCAD design, mold fabrication, material selectionMachine operation, mold setup, troubleshooting
Work EnvironmentManufacturing plants, mold shopsInjection molding facilities, production lines
CertificationsOften requires technical certifications in mold design or manufacturingMachine operation certifications, safety training

While a Plastic Injection Mold focuses on designing and creating molds, a Plastic Mold Technician operates and maintains these molds during production. Both roles are essential in the injection molding industry, with overlapping skills but distinct responsibilities.

What are some common challenges faced by plastic injection mold technicians on the job?

Plastic injection mold technicians often encounter challenges related to maintaining precise quality standards, troubleshooting equipment malfunctions, and minimizing production downtime. Adjusting machine settings to accommodate different mold designs and materials can require strong attention to detail and problem-solving skills. Additionally, technicians frequently collaborate with engineers and production teams to resolve defects and optimize manufacturing processes, making communication skills important for success in this role.
What are popular job titles related to Plastic Injection Mold jobs in Missouri? For Plastic Injection Mold jobs in Missouri, the most frequently searched job titles are:
What job categories do people searching Plastic Injection Mold jobs in Missouri look for? The top searched job categories for Plastic Injection Mold jobs in Missouri are:
What cities in Missouri are hiring for Plastic Injection Mold jobs? Cities in Missouri with the most Plastic Injection Mold job openings:
Plastic Injection Mold jobs near you
Infographic showing various Plastic Injection Mold job openings in Missouri as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution.

Automation Technician (1st, 2nd or 3rd shift)

LFP Associates

Kansas City, MO

$30 - $35/hr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 7 days ago

Job description

Automation Technician (1st, 2nd, or 3rd Shift) – Kansas City

Company Overview
Our client is a leading plastics manufacturer serving the automotive industry for over 40 years, offering advanced solutions in injection molding, TPO/TPE materials, extrusion, and engineered composites.

Position Summary

The Automation Technician is responsible for installing, troubleshooting, repairing, and improving automated systems in a plastic injection molding environment. This role ensures maximum production uptime by supporting robotics, PLC-controlled equipment, and auxiliary automation while meeting safety, quality, and IATF 16949 standards.

Key Responsibilities

  • Troubleshoot and repair:
    • Robotics (Fanuc, Wittman, Sepro, Viper)
    • End-of-arm tooling (EOAT)
    • Conveyors and part handling systems
  • Diagnose PLCs, HMIs, sensors, and drives
  • Perform preventative and predictive maintenance
  • Assist with PLC programming (Allen-Bradley, Siemens)
  • Support robot programming and cycle time improvements
  • Read electrical schematics and ladder logic
  • Drive continuous improvement (scrap reduction, uptime)
  • Conduct root cause analysis (RCA) and corrective actions
  • Respond quickly to downtime events
  • Support mold changes and automation setups
  • Collaborate with production, quality, and engineering teams
  • Ensure OSHA and plant safety compliance
  • Support IATF 16949 quality systems

Basic Qualifications

  • Associate’s degree or technical certification (preferred)
  • 2–5+ years automation experience (automotive preferred)
  • Injection molding experience strongly preferred
  • Knowledge of:
    • PLC systems (Allen-Bradley, Siemens)
    • Robotics systems
    • Electrical systems (24V, 120V, 480V)
    • Sensors, vision systems, servo drives
  • Strong troubleshooting and problem-solving skills
  • Effective communication skills

Physical Requirements

  • Stand, walk, bend, kneel, climb ladders
  • Lift up to 50 lbs
  • Work in industrial manufacturing environment

Working Conditions

  • Industrial environment with temperature variation
  • Exposure to noise, heat, and moving equipment
  • Injection molding and automation cells
  • Overtime and weekend work as needed

Compensation & Benefits

  • Medical, Dental, Vision
  • 401(k) with match
  • Paid holidays & vacation
  • Advancement opportunities

🔄 Key Differences Between Shifts

1️⃣ Primary Difference: Work Schedule

The ONLY real difference across all three descriptions is the shift designation:

  • 1st Shift → Day shift (typically ~6am–2pm or similar)
  • 2nd Shift → Afternoon/evening (~2pm–10pm)
  • 3rd Shift → Overnight (~10pm–6am)

👉 The job duties, qualifications, and responsibilities are identical across all three roles.

2️⃣ Operational Expectations by Shift (Implied, Not Explicitly Stated)

1st Shift (Days)

  • More interaction with:
    • Engineering
    • Management
    • Continuous improvement teams
  • More involvement in:
    • Projects
    • Process improvements
    • Meetings

2nd Shift (Afternoons)

  • Transition shift between day and night
  • Balanced mix of:
    • Troubleshooting
    • Some project carryover
  • Less management presence than 1st shift

3rd Shift (Nights)

  • Heavy focus on:
    • Troubleshooting
    • Keeping production running
  • Typically:
    • Minimal engineering support onsite
    • More independent work
    • Higher urgency response to downtime

3️⃣ Work Environment Reality

Even though all descriptions state the same:

“Work off-shift, weekends, and overtime as needed”

👉 In reality:

  • 2nd & 3rd shifts are more likely to:
    • Handle emergency breakdowns
    • Work with reduced support staff
    • Operate more autonomously