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Manufacturing Engineer Plastic Injection Molding Jobs

Restech Plastic Molding

Be Seen First

Plastics Engineer

Hudson, MA · On-site

$110K - $130K/yr

... Engineer (Plastic Injection Molding) will support manufacturing operations by developing, optimizing, and troubleshooting injection molding processes to ensure consistent product quality and ...

MMI Injection Molding

Process Engineer

Warren, MI · On-site

$75K - $80K/yr

... in plastic injection molding processing and a demonstrated knowledge of Scientific Injection ... We engineer innovative ideas for today's complex design and manufacturing issues. Key ...

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Plastic Molding Manufacturing

Quality Engineer

Hudson, MA · On-site

$80K - $100K/yr

Build Your Future with an Industry Leader in Custom Injection Molding Plastic Molding Manufacturing ... Quality Engineer (Plastic Injection Molding) * Location: Hudson, MA (on-site) * Schedule: Monday to ...

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All JobsManufacturing Engineer Plastic Injection Molding Jobs

Manufacturing Engineer Plastic Injection Molding information

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$47.5K

$85.6K

$120K

How much do manufacturing engineer plastic injection molding jobs pay per year?

As of Jul 17, 2026, the average yearly pay for manufacturing engineer plastic injection molding in the United States is $85,613.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,000.00 and $94,000.00 per year, depending on experience, location, and employer.

What is the difference between Manufacturing Engineer Plastic Injection Molding vs Manufacturing Engineer CNC Machining?

AspectManufacturing Engineer Plastic Injection MoldingManufacturing Engineer CNC Machining
Primary FocusDesign, optimize, and oversee plastic injection molding processesDesign, optimize, and oversee CNC machining processes for metal and plastic parts
Work EnvironmentInjection molding facilities, plastics manufacturing plantsCNC machine shops, metal and plastic manufacturing facilities
Required SkillsKnowledge of plastics, mold design, process optimizationKnowledge of CNC programming, machining tools, materials
CertificationsASQ certifications, manufacturing engineering degreesCAM/CNC programming certifications, engineering degrees

While both roles involve manufacturing process optimization, the Manufacturing Engineer Plastic Injection Molding specializes in plastic molding techniques, mold design, and plastics materials, whereas the Manufacturing Engineer CNC Machining focuses on metal and plastic part production using CNC machines. Both roles require engineering knowledge and certifications but differ in their specific processes and materials.

What are the key skills and qualifications needed to thrive as a Manufacturing Engineer in Plastic Injection Molding, and why are they important?

To thrive as a Manufacturing Engineer in Plastic Injection Molding, you need a strong background in mechanical or manufacturing engineering, experience with plastic materials, and knowledge of molding processes. Familiarity with CAD software, injection molding simulation tools, and quality management systems such as ISO 9001 is essential, along with certifications like Six Sigma being advantageous. Strong problem-solving skills, attention to detail, and effective communication are vital soft skills for collaborating with cross-functional teams and optimizing production. These competencies are crucial for ensuring efficient, high-quality manufacturing processes and continuous improvement in a competitive industry.

What does a Manufacturing Engineer in Plastic Injection Molding do?

A Manufacturing Engineer specializing in Plastic Injection Molding is responsible for designing, optimizing, and overseeing the production processes that create plastic parts using injection molding machines. They work to improve efficiency, quality, and safety while minimizing costs and downtime. Their duties often include selecting appropriate materials, troubleshooting equipment, developing process documentation, and ensuring that products meet strict specifications and quality standards.

What are some common challenges faced by Manufacturing Engineers in plastic injection molding, and how can they be addressed?

Manufacturing Engineers in plastic injection molding often encounter challenges such as optimizing cycle times, ensuring consistent part quality, and minimizing material waste. Addressing these issues typically involves close collaboration with design, quality assurance, and maintenance teams to fine-tune process parameters, implement robust tooling solutions, and adopt lean manufacturing practices. Staying proactive with preventive maintenance and continuous process monitoring also helps in quickly identifying and resolving production bottlenecks, ultimately enhancing productivity and product quality.
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Manufacturing Engineer Plastic Injection Molding jobs near you
Infographic showing various Manufacturing Engineer Plastic Injection Molding job openings in the United States as of July 2026, with employment types broken down into 92% Full Time, and 8% Part Time. Highlights an 100% In-person job distribution, with an average salary of $85,613 per year, or $41.2 per hour.
Process Engineer - Plastic Injection Molding

Process Engineer - Plastic Injection Molding

Now Hiring Heroes

Rockford, IL

$65K - $70K/yr

Full-time

Re-posted 9 days ago

Job description

Process Engineer – Plastic Injection Molding
Location: On-Site Manufacturing Facility
Employment Type: Full-Time
Compensation: $65k - $70k
Industry: Manufacturing / Plastics / Packaging
Position Overview
A growing manufacturing organization is seeking an experienced Process Engineer with plastic injection molding expertise to support high-volume production operations. This role focuses on developing, optimizing, and troubleshooting injection molding processes to ensure efficient, consistent, and high-quality manufacturing output.
The Process Engineer works closely with process technicians, tooling teams, maintenance, quality, and production leadership to improve cycle times, reduce scrap, increase uptime, and support continuous improvement initiatives.
This position also plays a key role in new product launches, equipment upgrades, and automation integration within a fast-paced manufacturing environment.
Key Responsibilities
Injection Molding Process Development
  • Develop, document, and optimize plastic injection molding processes for new and existing molds
  • Provide technical guidance to process technicians and molding operators
  • Troubleshoot molding defects, process instability, and equipment performance issues
  • Improve cycle times, scrap reduction, and process repeatability
  • Support mold trials, machine startups, and process validation
Manufacturing Process Improvement
  • Analyze production data and implement improvements to increase efficiency and OEE
  • Lead process validation activities including DOE, IQ/OQ/PQ, and capability studies
  • Identify opportunities for cost reduction and manufacturing efficiency
  • Participate in Lean Manufacturing and Six Sigma initiatives
Cross-Functional Collaboration
  • Work closely with tooling, quality, maintenance, and operations teams
  • Support preventive and predictive maintenance strategies
  • Evaluate mold performance and recommend tooling improvements
  • Assist project teams with new product introductions
Automation & Equipment Integration
  • Support integration of molding cells with robotics, vision inspection, and automated packaging systems
  • Assist with installation and commissioning of molding machines and auxiliary equipment
  • Identify automation opportunities to improve production efficiency
Required Qualifications
  • Bachelor’s Degree in Plastics Engineering, Mechanical Engineering, Manufacturing Engineering, or related field (or equivalent experience)
  • 5+ years of experience in plastic injection molding manufacturing
  • Experience with high-speed injection molding processes
  • Experience developing scientific molding processes
  • Experience conducting Design of Experiments (DOE)
  • Experience troubleshooting molding processes and mold issues
  • Strong understanding of Statistical Process Control (SPC)
Preferred Qualifications
  • Experience with thin-wall packaging applications
  • Lean Manufacturing or Six Sigma certification
  • Continuous Improvement Green Belt certification
  • Training in Scientific Molding or RJG technology
  • Experience integrating robotics or automated production systems
  • Experience working in regulated manufacturing environments
Technical Skills
  • Knowledge of polypropylene, polyethylene, and other packaging resins
  • Strong understanding of OEE metrics and process improvement
  • Experience performing root cause analysis and process troubleshooting
  • Proficiency with Microsoft Office
  • Familiarity with ERP or MES manufacturing systems
Why This Role
  • Work in a modern manufacturing environment
  • Opportunity to lead process improvement initiatives
  • Exposure to high-speed production and advanced automation
  • Impact production efficiency, quality, and operational performance