Injection Molding Process Engineer — Optimize & Launch

Clayens US LLC; Greeneville (TN); On-site; USD 90,000 - 130,000; Full time

Job summary

Clayens US LLC in Tennessee seeks a Plastic Injection Molding Process Engineer to develop and optimize molding processes, ensuring safe, efficient production and high quality. You will collaborate with Operations, Quality, Tooling, Maintenance, Engineering, and Program Management to drive continuous improvement and successful launches.

Responsibilities include process validation, mold trials, capability analyses, and reducing cycle times and defects using scientific molding principles.

Qualifications

• Bachelor's degree in Engineering, Plastics Engineering, Manufacturing Engineering, Mechanical Engineering, or a related technical field.
• 3–7 years of experience in plastic injection molding process engineering or advanced process development.
• Strong knowledge of injection molding equipment, molds, tooling, and resin processing.
• Experience developing and validating molding processes in a manufacturing environment.
• Knowledge of scientific molding principles and process optimization techniques.

Responsibilities

• Develop, establish, validate, and document robust injection molding processes for new and existing products.
• Lead process development activities, including mold trials, process studies, capability analysis, and production validations.
• Analyze molding processes and implement improvements to increase productivity, quality, and OEE.
• Troubleshoot molding defects (flash, short shots, sink marks, burn marks, splay, warpage, dimensional variation).
• Use scientific molding principles and data-driven methodologies to establish and maintain process controls.
• Conduct root cause investigations and implement corrective/preventive actions.
• Support new product launches, process qualifications, mold validations, and production ramp-ups.
• Develop and maintain standard process sheets, work instructions, validation documentation, and engineering records.
• Collaborate with Quality to establish process capability requirements and improve product consistency.
• Identify opportunities to reduce cycle times, scrap, downtime, material consumption, and costs.
• Evaluate and implement process improvements involving automation, robotics, vision systems, and auxiliary equipment.
• Partner with Tooling and Maintenance to improve mold performance and preventive maintenance.
• Lead continuous improvement projects using problem-solving methodologies.

Skills

Analytical skills

Communication

Project management

Problem solving

Reading engineering drawings & GD&T

Statistical methods & SPC

Data-driven decision making

Documentation & writing

Education

Bachelor's degree in Engineering or related field

Tools

RJG Master Molder Certification

Moldflow

Automation/robotics tooling

Job description

Clayens US LLC in Tennessee seeks a Plastic Injection Molding Process Engineer to develop and optimize molding processes, ensuring safe, efficient production and high quality. You will collaborate with Operations, Quality, Tooling, Maintenance, Engineering, and Program Management to drive continuous improvement and successful launches.

Responsibilities include process validation, mold trials, capability analyses, and reducing cycle times and defects using scientific molding principles.