Expert Tool Design Engineer

Assist in developing innovative tooling and equipment that power Mac Lean-Fogg’s Engineered Plastic Company. This role focuses on creating high-performance tooling that enhances production efficiency, product quality, and safety in our plastic molding operations.

• Position Type: Full-Time/Salaried (Exempt)

• Pay Range: Competitive – Discussed during interview

• Work Location: Onsite – Menomonee Falls, WI 53051

• Travel: Up to 10%

• Assist in developing injection molds, fixtures, and assembly tools to support plastic manufacturing operations.

• Review part designs and customer requirements to determine tooling concepts, materials, and processing needs.

• Use 3D CAD software to create accurate, detailed models and drawings for mold and tool fabrication.

• Collaborate with engineering, production, and quality teams to ensure mold performance, reliability, and manufacturability.

• Estimate tooling costs, material requirements, and project timelines for new and modified tools.

• Lead efforts to improve tooling design for cycle time reduction, part quality, and mold longevity.

• Support automation initiatives to modernize molding and assembly processes.

• Oversee tooling suppliers, quotes, and procurement to ensure cost-effective, high-quality deliverables.

• Evaluate and implement material and design improvements to enhance tool performance and reduce maintenance.

• 3D Modeling and CAD Design (Solid Works, NX, or equivalent)

• Injection Mold Design and Fabrication

• Plastic Material Knowledge (thermoplastics, resins, and composites)

• Manufacturing Process Engineering

• Geometric Dimensioning & Tolerancing (GD&T)

• Problem Solving and Root Cause Analysis

• Design for Manufacturability and Moldability (DFM/DFMold)

• Automation and Tooling Integration

• Project Management and Collaboration

• Bachelor’s degree in Mechanical Engineering, Manufacturing Engineering, Plastics Engineering, or related field

• 10+ years of experience in tooling or mold design for plastic injection molding operations

• Proficiency in CAD modeling and technical drawing for mold and tool fabrication

• Strong understanding of mold construction, cooling design, gating, and ejection systems

• Proven success leading tooling projects from concept through validation and production launch