On-Site Plastics Process Engineer - Precision Molding

Pexco; Cincinnati (OH); On-site; USD 81,000 - 99,000; Full time

Job summary

Pexco, located in Cincinnati, OH, seeks a Plastics Engineer to lead the development, optimization, validation, and continuous improvement of precision injection molding processes for critical applications. This role combines scientific molding, mold design, Moldflow simulation, and advanced metrology to ensure world-class quality and manufacturing excellence.

Responsibilities include process validation, DOE studies, design for manufacturability reviews, and collaboration with tooling,

Qualifications

• Bachelor's degree in Plastics Engineering, Mechanical Engineering, Manufacturing Engineering, or related field.
• 3+ years of injection molding and mold design.
• Simulation Software Experience (Moldflow or similar).
• Strong understanding of scientific molding and process optimization.
• Experience with dimensional metrology and quality systems.
• Experience in regulated environments (medical, aerospace, defense).
• Moldflow experience including fill, cooling, pack, shrinkage, warp analyses.
• Hands-on experience with CMMs, optical measurement systems, and industrial CT scanners.
• Knowledge of GD&T, tolerance stack-up analysis, MSA, SPC, Cp/Cpk.
• Experience with automation systems, robotics, and vision inspection technologies.
• Experience with high-performance polymers (PEEK, PPS, PEI, PFA, FEP, ETFE, LCP).

Responsibilities

• Develop and optimize injection molding processes for precision plastic components with tight tolerances.
• Lead process validations including IQ/OQ/PQ activities, DOE studies, and process window development.
• Troubleshoot molding defects and implement corrective actions using data-driven methods.
• Support new product introductions from concept through production launch.
• Conduct mold design reviews and provide DFM recommendations.
• Utilize Moldflow to perform fill, pack, cooling, shrinkage, and warp analyses.
• Recommend improvements to gating, runner, cooling, venting, and ejection systems.
• Use metrology systems to validate part geometry and dimensional capability.
• Perform root cause analysis with metrology data and statistical methods.
• Establish SPC, MSA, Gage R&R, Cp/CpK studies; collaborate across multiple teams.

Job description

Pexco, located in Cincinnati, OH, seeks a Plastics Engineer to lead the development, optimization, validation, and continuous improvement of precision injection molding processes for critical applications. This role combines scientific molding, mold design, Moldflow simulation, and advanced metrology to ensure world-class quality and manufacturing excellence.

Responsibilities include process validation, DOE studies, design for manufacturability reviews, and collaboration with tooling,