Mr. Supinie began his career after earning a B.S. in Aeronautical and Astronautical Engineering from the University of Illinois at Urbana-Champaign in May 1981. His early industry experience includes airframe design and airframe structural loads analysis at Boeing-Wichita, McDonnell Aircraft, and Cessna Aircraft Company.

In 1990, Mr. Supinie joined the Cessna Aircraft Company New Product Development (NPD) Aerodynamics area. In this role, he contributed to the aerodynamic configuration of all products launched after 1990, in particular, CitationJet, Excel, Sovereign and the Citation X. In 1999 he assumed leadership of Advanced Design at Cessna and lead a team conducting conceptual design activities for all new products, including the Citation CJ3 and CJ4 and Citation Mustang, as well as numerous updates to existing models. This role required regular communication with Senior Leadership to present NPD technical and commercial information to allow go/no-go decisions on airplane development projects. In 2009 he returned to Aerodynamics in a leadership capacity, guiding a team of 35 aerodynamics engineers responsible for aerodynamic configuration development across all combined Cessna and Beechcraft product lines. Key products developed during this time include the Citation Latitude and laid the groundwork for the Citation Longitude. He also lead all Textron Aviation activity on the ASTM F44 Committee on General Aviation Aircraft. This committee was formed in 2012 with the purpose of providing additional means of compliance for the newly developed FAA part 23 amendment 64 and EASA CS-23 amendment 5.

In 2016 Mr. Supinie transitioned to a new role with the FAA Certification Service with the Small Airplane Standards, leaving industry after 35 years. In this role he played a part in the adaptation of the then new part 23 amendment 64 performance based regulatory structure for the emerging eVTOL aircraft aimed at serving the Urban Air Mobility segment. He also contributed to the implementation of amendment 64 including development of training material for FAA Aircraft Certification Office engineers. Additionally he represented FAA on the ASTM F44 Committee, Executive Subcommittee. He retired from FAA in 2021.

Mr. Supinie joined Rolland Vincent and Associates in 2023 as a Senior Engineer specializing in configuration development and propulsion selection/integration.

Mr. Supinie holds a Commercial Pilot certificate, with instrument and CE525 type ratings and over 2500 hours pilot in command time.