Plastics Injection Molding – Manufacturing Engineer II (US - Mansfield)

Smith & Nephew • Mansfield, MA

2d • Onsite

About The Position

Life Unlimited. At Smith+Nephew we design and manufacture technology that takes the limits off living. The Plastics Engineer II will serve as a primary technical resource on the manufacturing floor, focusing on hands-on injection molding processing and mold maintenance to support medical device production. This role requires a strong background in scientific molding to develop, optimize, and troubleshoot molding processes, as well as the ability to perform or support mold maintenance, repair, and setup. This position is not offering any type of visa transfer or sponsorship now or in the future.

Requirements

• Bachelors degree in Plastics Engineering
• 2+ years of hands-on experience in plastic injection molding, specifically within the medical device or high-precision industry.
• Deep understanding of scientific molding processes.
• Strong mold maintenance, tooling, and repair capabilities (e.g., hot runners, mold disassembly).
• Proficiency in CAD software (SolidWorks/AutoCAD).
• Experience with medical regulatory requirements (GMP/ISO 13485).

Responsibilities

• Lead injection molding process development and optimization using Scientific Molding techniques (e.g., DOE, viscosity curves, cavity pressure monitoring) to ensure consistent quality and efficiency.
• Perform and manage mold preventative maintenance (PM), repair, and modification to maximize mold life and minimize downtime.
• Act as the technical lead in resolving production issues related to machinery, tooling, materials, and process deviations.
• Develop and execute validations (IQ/OQ/PQ) for new molds, processes, and equipment in compliance with FDA and ISO 13485 regulations.
• Lead mold trials, machine setups, and commissioning of new molds/equipment.
• Maintain meticulous process documentation, including Process Flow Diagrams, Mold Maintenance Logs, and Work Instructions.
• Collaborate with Product Development on Design for Manufacturability (DFM) and support the tooling team with CAD reviews and mold flow analysis.

Benefits

• medical
• dental
• vision coverage
• 401(k)
• tuition reimbursement
• medical leave programs
• parental leave
• generous PTO
• paid company holidays
• 8 hours of volunteer time annually
• wellness offerings such as EAP
• 401k Matching Program
• 401k Plus Program
• Discounted Stock Options
• Tuition Reimbursement
• Flexible Personal/Vacation Time Off
• Paid Holidays
• Flex Holidays
• Paid Community Service Day
• Health Savings Account (Employer Contribution of $500+ annually)
• Employee Assistance Program
• Parental Leave
• Fertility and Adoption Assistance Program
• Discounts on fitness clubs, travel and more!

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level