Precision Plastics Engineer – Injection Molding & NPI

Precise Aerospace Manufacturing; Cincinnati (OH); On-site; USD 85,000 - 120,000; Full time

Job summary

Precise Aerospace Manufacturing in Cincinnati, OH seeks a Plastics Engineer to lead precision injection molding for medical, aerospace, defense, and industrial applications, combining molding science, mold design, Moldflow, metrology, automation, and NPI to ensure world-class quality and dimensional performance.

The candidate will drive process validations (IQ/OQ/PQ), DOE studies, and data-driven problem solving, while collaborating across tooling, automation, quality, production, and customers.

Qualifications

• Bachelors in Plastics Eng, Mechanical Eng, Manufacturing Eng, or related field.
• 3+ years of injection molding and mold design.
• Experience with Moldflow and metrology.
• Knowledge of GD&T and tolerance stack‑up analysis.
• Experience in regulated environments (medical, aerospace, defense).

Responsibilities

• Develop and optimize injection molding processes for precision plastic components with tight tolerances.
• Lead IQ/OQ/PQ validations, DOE studies, and process window development.
• Troubleshoot molding defects and implement data-driven corrective actions.
• Support new product introductions from concept to production launch.
• Conduct mold design reviews and provide DFM recommendations.
• Utilize Moldflow to analyze fill, pack, cooling, shrinkage, and warp.
• Recommend improvements to gating, runner, cooling, venting, and ejection.
• Utilize CMMs, optical systems, and CT scanners to validate geometry.
• Perform root-cause analysis of dimensional variation through metrology data.
• Establish SPC, MSA, Gage R&R, and Cp/Cpk capability studies.
• Collaborate with tooling, automation, quality, production, and customer teams.
• Evaluate and implement new manufacturing technologies and tools.
• Other duties as assigned.

Skills

Injection molding

Mold design

Moldflow simulation

Metrology

Statistical analysis

GD&T

Automation

Polymer kinds (PEEK PPS...)

Education

Bachelor’s degree in Plastics/Mechanical/Manufacturing Engineering

Tools

Moldflow

CMMs

Optical inspection

Industrial CT

Vision systems

FARO-type equipment

Job description

Precise Aerospace Manufacturing in Cincinnati, OH seeks a Plastics Engineer to lead precision injection molding for medical, aerospace, defense, and industrial applications, combining molding science, mold design, Moldflow, metrology, automation, and NPI to ensure world-class quality and dimensional performance.

The candidate will drive process validations (IQ/OQ/PQ), DOE studies, and data-driven problem solving, while collaborating across tooling, automation, quality, production, and customers.