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🥝 Thermoforming Tool Design Engineer

Sinclair and Rush Inc. | Arnold, United States | Posted June 12, 2026

Job Description

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
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