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Molding Engineer Jobs in Missouri (NOW HIRING)

Alpla

Injection Molding Process Technician

Kansas City, MO · On-site

$24.50 - $29.25/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Assists engineering with production tool qualification procedures as needed. * Assists packaging ... Min 2 years' experience in Injection Molding * Experienced in either Toolmaking, Mechanic or ...

HiFyve

Maintenance Engineer

Columbia, MO · On-site

Extensive experience with Uniloy blow molding machines * Diagnose and troubleshoot mechanical and ... Experience with PLC troubleshooting and programming is a plus. * Ability to read and interpret ...

Pretium Packaging

Process Engineer

Saint Louis, MO

$90K - $130K/hr

Pretium Packaging, founded in 1992, is a leading supplier of injection-blow molded plastic ... The Process Engineer assists plant leadership and works collaboratively with all other departments ...

Pretium Packaging - USA

Process engineer

Saint Louis, MO · On-site

$88K - $103K/yr

Pretium Packaging, founded in 1992, is a leading supplier of injection-blow molded plastic ... The Process Engineer assists plant leadership and works collaboratively with all other departments ...

Pretium Packaging

Process engineer

Saint Louis, MO

$42.31 - $49.52/hr

Pretium Packaging, founded in 1992, is a leading supplier of injection-blow molded plastic ... The Process Engineer assists plant leadership and works collaboratively with all other departments ...

Pretium Packaging

Process Engineer

Saint Louis, MO · On-site

Pretium Packaging, founded in 1992, is a leading supplier of injection-blow molded plastic ... The Process Engineer assists plant leadership and works collaboratively with all other departments ...

American Plastics, LLC

Design Engineer

Jefferson City, MO · On-site

  • Medical

  • Dental

  • Retirement

  • PTO

Louis, Missouri, is a leading designer and manufacturer of innovative plastic-injection molded ... We are seeking a skilled Design Engineer specializing in plastics to join our team at our ...

American Plastics LLC

Design Engineer

Jefferson City, MO · On-site

  • Medical

  • Dental

  • Retirement

  • PTO

Louis, Missouri, is a leading designer and manufacturer of innovative plastic-injection molded ... We are seeking a skilled Design Engineer specializing in plastics to join our team at our ...

US Farathane Corporation

Quality Engineer

Riverside, MO · On-site

$69K - $89K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

US Farathane is seeking an experienced Quality Engineer for ensuring that plastic injection molded components meet all customer, internal, and regulatory requirements. This role supports production ...

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Showing results 1-20

All JobsMolding Engineer JobsMolding Engineer Jobs in Missouri

Molding Engineer information

See Missouri salary details

$39.4K

$77.5K

$117.7K

How much do molding engineer jobs pay per year?

As of Aug 14, 2026, the average yearly pay for molding engineer in Missouri is $77,541.00, according to ZipRecruiter salary data. Most workers in this role earn between $66,100.00 and $82,100.00 per year, depending on experience, location, and employer.

Is mold making a good career?

A molding engineer plays a key role in designing and developing molds for manufacturing processes, often requiring technical skills in CAD software and knowledge of materials. The field offers steady employment opportunities in industries such as automotive, consumer goods, and aerospace, with potential for career advancement and specialization. Job stability and growth depend on industry demand and technical expertise.

What is the difference between Molding Engineer vs Tooling Engineer?

AspectMolding EngineerTooling Engineer
Primary FocusDesign, develop, and optimize molding processes for manufacturing plastic or metal partsDesign, develop, and maintain tools and dies used in manufacturing processes
Required SkillsKnowledge of molding machines, materials, process parametersExpertise in tool design, CAD/CAM, and machining
Work EnvironmentManufacturing plants, quality labsTool rooms, machine shops, manufacturing facilities
Common CertificationsManufacturing or process engineering certificationsTool design, CAD/CAM certifications

While both roles are integral to manufacturing, Molding Engineers focus on the overall molding process and product quality, whereas Tooling Engineers specialize in designing and maintaining the tools used in production. Both roles require technical skills and often collaborate to ensure efficient manufacturing operations.

What are the key skills and qualifications needed to thrive as a molding engineer?

To thrive as a Molding Engineer, you need a strong background in mechanical or manufacturing engineering, with expertise in injection molding processes and materials science, often supported by a relevant engineering degree. Familiarity with CAD software, mold flow analysis tools, and quality control systems is typically required, along with certifications like Six Sigma or RJG Master Molder. Problem-solving, attention to detail, and effective communication are crucial soft skills for collaborating with cross-functional teams and ensuring process optimization. These skills and qualifications are vital for producing high-quality molded products efficiently and maintaining consistent manufacturing standards.

What are some common challenges a molding engineer faces when optimizing production processes?

Molding Engineers often encounter challenges such as maintaining consistent quality across large production runs, minimizing cycle times, and troubleshooting defects like warping or sink marks. They must also balance material costs with performance requirements and adapt to changes in tooling or equipment. Effective collaboration with production teams, tool designers, and quality assurance is essential to identify root causes and implement solutions quickly, ensuring smooth and efficient operations.

What is a molding engineer?

Molding Engineers are specialized professionals who design, develop, and optimize molding processes used to manufacture parts and products, typically from plastics or other moldable materials. They work with various molding techniques, such as injection molding, compression molding, and blow molding, to ensure quality, efficiency, and cost-effectiveness in production. Their responsibilities include selecting appropriate materials, designing molds, troubleshooting defects, and improving existing processes. Molding Engineers often collaborate with product designers, quality engineers, and production teams to meet manufacturing goals.

What are popular job titles related to Molding Engineer jobs in Missouri?

For Molding Engineer jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Molding Engineer jobs in Missouri look for?

The top searched job categories for Molding Engineer jobs in Missouri are:

What are popular job titles related to Molding Engineer jobs in MO?

For Molding Engineer jobs in MO, the most frequently searched job titles are:

Molding Engineer jobs near you
Infographic showing various Molding Engineer job openings in Missouri as of August 2026, with employment types broken down into 33% Internship, and 67% Full Time. Highlights an 100% In-person job distribution, with an average salary of $77,541 per year, or $37.3 per hour.

Injection Molding Process Engineer - PSC121525

PlasticStaffing

Saint Louis, MO • On-site

$75K - $100K/yr

Full-time

Re-posted yesterday

Job description

PlasticStaffing.com is the largest executive search firm specializing in Plastic molding, Chemical manufactruing, and Packaging industries. For the past 25+ years, we have assisted thousands of candidates by identifying, interviewing and confidentially connecting them to an ideal role in the industry. Our goal is to be a strategic partner with each of our clients and a career management consultant to our candidates, with our company culture built with honesty and integrity.

There is no charge to assist candidates having industry experience. To get started, we only require your updated resume, your honesty, and a few moments of your time over the phone.


Injection Molding Process Engineer - PSC121525 
 
Pay: $75,000 - 100,000/year + Benefits 
Type: Full-time / Permanent Hire 
 
Industry: Plastic Injection Molding
 
Schedule: Monday - Friday  
 
We’re seeking an experienced and results‑driven Injection Molding Process Engineer to join an ever-growing leader in the plastic packaging technology and injection molding industry. In this role, you will oversee and optimize molding operations for high-precision plastic components, ensuring efficiency, quality, and safety across all production processes.
 
Responsibilities:
  • Oversee daily injection molding operations to ensure consistent production of high‑quality plastic parts.
  • Develop, document, and optimize molding processes to improve efficiency, reduce cycle times, and maintain product standards.
  • Troubleshoot molding machines, tooling, and auxiliary equipment to minimize downtime and resolve technical issues.
  • Monitor and enforce quality control procedures to meet customer specifications and regulatory requirements.
  • Collaborate with cross‑functional teams in production, engineering, and maintenance to support new product launches and process improvements.
  • Train and mentor operators and technicians on machine setup, process adjustments, and safety practices.
  • Lead continuous improvement initiatives focused on lean manufacturing, waste reduction, and cost efficiency.
  • Maintain accurate records of process parameters, equipment performance, and compliance documentation.
Qualifications:
  • Bachelor’s degree in Engineering (Mechanical, Manufacturing, Plastics, or related field) or equivalent technical experience.
  • 3+ years of hands‑on experience in injection molding operations, process engineering, or plastics manufacturing.
  • Strong knowledge of thermoplastics and molding principles, including material properties, shrinkage, and flow behavior.
  • Proficiency with molding machines, tooling, and auxiliary equipment such as dryers, chillers, and robots.
  • Experience in process optimization techniques (DOE, SPC, Six Sigma, or similar).
  • Understanding of lean manufacturing and continuous improvement methodologies.
  • Excellent troubleshooting and problem‑solving skills with a focus on root cause analysis.
  • Strong communication and leadership abilities to collaborate with cross‑functional teams and train operators.
  • Ability to maintain accurate documentation of process parameters, quality standards, and compliance requirements.
This position offers competitive compensation, benefits, and opportunities for career growth within the organization. For more info, please contact:
 
Maria Abelardo | Recruiting Director
Direct: (754)-241-9507
PlasticStaffing.com
a division of National Search Group, Inc.