NPI Injection Molding Engineer

NPI Injection Molding Engineer

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Nice to Know

Report to the Program Supervisor, the NPI Injection Molding Engineer is responsible for the industrialization of injected plastic components within the NPI process — from tooling kick-off to validation and final release for mass production. Ensure that all molded parts are dimensionally and functionally validated, process-capable, and manufacturable within the defined cycle time and quality targets. Support cross-functional teams to identify design improvements, drive tool tuning, and manage mold trials.

My Day at EssilorLuxottica

• Support mold design validation and tooling kick-off, and feedback to ensure manufacturability and injection feasibility.
• Coordinate and attend mold trials. Collect key parameters, and drive tuning activities to achieve dimensional, cosmetic, and functional targets.
• Define and validate injection parameters (pressure, temperature, cooling, etc.) to optimize cycle time while maintaining quality and mold/tool safety.
• Identify and resolve molding issues (e.g., sink marks, warpage, flow lines, short shots, flash). Drive root cause analysis and corrective actions during validation builds.
• Verify resin compatibility, color consistency, and behavior in mold.
• Work closely with design, tooling, quality, and production teams to ensure smooth transition of parts from samples to serial production.
• Prepare detailed trial reports, and maintain mold history files until hand-over to production. Track and follow open issues until closure.
• Ensure molded parts are available on time for sample making schedule. Validate part readiness against aesthetic, structural, and assembly fit requirements.
• Comply with the local and group policies.
• Comply with the ISO certifications and other group systems.
• Contribute to the external/internal audits.

Must Have

• Degree in Mechanical Engineering, Plastics Engineering, or related field
• Solid understanding of injection molding processes, tooling concepts, and thermoplastics behavior
• Experience with mold validation and troubleshooting techniques (DOE, scientific molding, etc.)
• Knowledge of dimensioning systems (GD&T), tolerances, and part qualification methods
• Familiarity with mold flow analysis and CAE tools is a plus
• Excellent analytical and problem-solving skills
• Strong communication and coordination in cross-functional environments

Proficient with technical documentation and reporting tools

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