Senior Injection Molding Process Engineer - Optimize & Lead

Infiltrator Water Technologies; Winchester (KY); On-site; USD 90,000 - 140,000; Full time

Benefits offered by this job

Health benefits

401k with match

Stock purchase plan

Tuition reimbursement

Parental leave

Job summary

Infiltrator Water Technologies in Winchester, KY, is seeking an experienced Injection Molding Process Engineer to develop, optimize, and sustain molding processes for high-quality, cost-effective production.

You will lead DOE, troubleshoot defects, establish standard processing parameters, support mold trials, and drive scrap reduction, cycle-time improvement, and OEE across cross-functional teams.

Qualifications

• Bachelor’s degree in engineering (Plastics, Mechanical, Manufacturing, or related field).
• 10+ years of experience in injection molding process engineering or equivalent.
• Strong understanding of scientific molding principles (fill, pack, hold, cooling optimization).
• Proven experience troubleshooting molding defects and process instability.
• Experience running and analyzing Design of Experiments (DOE).
• Familiarity with thermoplastics materials.
• Ability to interpret part drawings and CAD data.
• Strong data analysis skills and experience using SPC tools.
• Experience with molding machines, hot runner systems, and auxiliary equipment.
• Proficiency in Microsoft Excel and standard manufacturing tools.

Responsibilities

• Develop, validate, and optimize injection molding processes for new and existing programs.
• Lead structured problem-solving activities (DOE, root cause analysis, SPC) to reduce scrap and improve quality.
• Establish standard processing parameters, setup sheets, and work instructions.
• Support mold trials, qualification runs, and new product launches.
• Troubleshoot molding defects such as short shots, flash, warp, dimensional variation, and cosmetic issues.
• Drive cycle time reduction, material usage optimization, and overall equipment efficiency (OEE) improvements.
• Collaborate with tooling and maintenance teams to improve mold performance and reliability.
• Analyze process data and trends to identify opportunities for continuous improvement.
• Support validation activities (IQ/OQ/PQ where applicable).
• Train technicians and operators on best practices, process standards, and troubleshooting techniques.
• Ensure adherence to safety, quality, and environmental standards.
• Lead continuous improvement and cost saving initiatives.
• Identify root causes and implement permanent corrective actions for process related functions.
• Assist in the development and coordination of project plans, review vendor proposals, manage team activities, communicate changes, provide progress updates, and complete on time and within budget.

Skills

Data analysis

DOE

Troubleshooting

Scientific molding

SPC

Excel

Education

Bachelor’s degree in engineering

Tools

Mold machinery

Hot runner systems

Robotics

Conveyors

Moldflow

Job description

Infiltrator Water Technologies in Winchester, KY, is seeking an experienced Injection Molding Process Engineer to develop, optimize, and sustain molding processes for high-quality, cost-effective production.

You will lead DOE, troubleshoot defects, establish standard processing parameters, support mold trials, and drive scrap reduction, cycle-time improvement, and OEE across cross-functional teams.