Meet the Protosthetics Team



Protosthetics is FDA registered medical device facility. We come to work every day because we strive to solve the biggest challenges in the orthotics and prosthetics industry. We strive to arm clinics and practitioners with the best tools and products in order to deliver the highest level of patient care.

Protosthetics Team

Sales & Business Development


Cooper Bierscheid

Chief Futurist, Founder

Cooper leads the daily operations at Protosthetics, including sales, R&D, and production. Cooper graduated from NDSU with a manufacturing engineering degree. He spent time working at 3M’s innovation labs. His passion is developing products that help people which led him to founding Protosthetics. Outside of work, you can find him woodworking in his garage that no longer has any room to park cars because there are too many projects “in the works”.



Amy Caruso


Amy completed her Prosthetics and Orthotics Technologies Degrees at Century College. Since graduating in 2000, Amy has worked her way from a Technician up to a Board Certified Orthotist. Amy’s knowledge of fabricating orthoses and prostheses, and fitting orthotics help ensure products that will provide an excellent outcome. She is married with 2 children and 4 dogs, which means she doesn’t understand what free time is.


Tanner McLean

Technician Co-Foreman

Tanner graduated from Minnesota State University Mankato in 2012. In his free time, he is slinging concrete for a small business he owns. His years of working in the construction, fostered a passion for working with his hands. He puts those skills to the test by making custom orthoses. His title changes on daily basis as he picks up any task that needs to get done. Singing to his favorite song on the shop radio is not one of those desirable skills.


Jake Schaffer

CAD/CAM Technician

Jake is a graduate from Minnesota State Community and Technical College. His degree in Graphic Design Technology led him on the path of working at several startups in the Fargo-Moorhead area. From designing digital graphics to running CNC fabrication equipment, Jake has the experience to design any O&P product. Oh and did we mention he happens to dabble in developing websites in his free time.


David Hoffman

Engineering Apprentice

David is an industrial engineering student at NDSU. He is part of our production team. He is a wizard in CAD and shows off his skills on a daily basis modeling the latest thing to 3D print. His favorite task is developing new processes to better safety, efficiency, and repeatability. Some of his hobbies include swimming, sports editorial writing, and movie critiques.


Lucas Bierscheid

Technician Apprentice

Lucas once asked the most important question: Who would win a fight between a bear vs a gorilla? He is currently in pursuit of a biology degree from NDSU to figure out that exact question. In the meantime, he fills the roll of technician apprentice at Protosthetics where you can find him dialing in his grinding skills, measuring the exact amount of plaster a size 12 foot cast takes, or whether brushing contact cement in a certain direction makes it stick better.

Open Positions