Thermoforming Tool Design Engineer

Sinclair and Rush Inc. • Arnold, Missouri • Posted June 12, 2026

About the Role

Thermoforming Tool Design Engineer
Location: Arnold, MO
Sinclair & Rush is a global manufacturer of plastic, rubber, and foam products, serving a wide range of industries. We are looking for a hands-on Thermoforming Tool Design Engineer to support our growing operations. This role works closely with production, engineering, and machining teams to design and develop tooling that supports efficient, high-quality manufacturing.
Key Responsibilities
Design thermoforming molds, trim tools, fixtures, and related components using 3D CAD software