Mechanical Engineer Intern - Sustaining

Packsize•Louisville, KY

About The Position

JOB DESCRIPTION: R&D Engineering Intern _________________________________________________________________________________________________ We are Packsize. A fast-growth multinational technology company committed to eliminating excessive and unfriendly packaging experiences through the adoption of Right-sized Packaging On Demand® systems, software, and services. Founded in 2002 and headquartered in Salt Lake City, Packsize gives businesses worldwide the ability to improve their customer satisfaction and enhance brand value while gaining efficiencies and savings. We accomplish this through our shared passion for a world where every box, envelope, and package shipped is the right size. This right-sized shipment sends a ripple effect through the supply chain by reducing carbon emissions and fuel needs. In pursuit of packaging sustainability, we value the contribution of our combined experiences, backgrounds, and relationships to create a team where Everyone Fits. Become a part of Packsize and help us build Smart Packaging for a Healthy Planet®. Packsize is currently seeking a junior or senior (if planning on grad school) Mechanical Engineering student to work as an intern in the US R&D Hardware group. This is a paid, full-time internship during the summer of 2026. The candidate will be working with a team of R&D engineers (mechanical, electrical and PLC/controls engineers) working on numerous aspects of the product design and development cycle.

Requirements

SolidWorks CAD and PLM experience
Ability to design and communicate a mechanical part or assembly for manufacturing (2D drawings)
Working with large Bills of Material
Sustaining engineering (production support, part obsolescence, data cleanup)
Part and assembly metadata
Comfortable with hands on work (turning wrenches etc…) and using various tools
Familiar with ISO, and ANSI standards (or where to look to find answers)
Independent and self-motivated
Familiar with lean principles and design thinking mindsets
Design for manufacture
Rapid prototyping (fail fast and learn quickly)
Strong verbal and written communication skills and competent using modern communication tools
Work independently but also highly collaborative in a team environment
Accepts and considers critical review of design work
Utilizes time effectively
Familiar with basic welding, machining, and fabrication
Programming fundamentals helpful (Python, C# etc..)