Executive Team

Theodora Retsina - CEO

Theodora Retsina, Ph.D.

Chief Executive Officer

Dr. Retsina founded American Process in 1995 and has led the company’s growth and diversification efforts. Dr. Retsina has more than twenty years of experience in executive management, engineering, process development and operations. Prior to founding American Process, she was the International Project Manager for Parsons and Whittemore Inc., a global design-build-operator of pulp and paper mills, where she was responsible for project construction and process development and optimization. Dr Retsina is a licensed Professional Engineer (PE) and the author of over 30 scientific publications, patents, and patents pending. She received a PhD in Chemical Engineering from Imperial College, University of London.

Steve Rutherford - COO

Steve Rutherford

Chief Operating Officer

Steve Rutherford has more than 25 years of executive management experience in engineering, product development, project execution, construction and operations. Prior to joining American Process, Mr. Rutherford served as Engineering Vice President of Parsons & Whittemore Inc. where he was responsible for implementation of projects totaling over $50 million per year for company owned pulp and paper mills in the USA, Canada, and Spain. He received a Masters of Business Administration from the University of Alabama and a Bachelor of Science in Electrical Engineering from the City University, London, England. He is a licensed Professional Engineer (PE).

Vesa Pylkkanens - CTO

Vesa Pylkkanen

Chief Technology Officer

Mr. Pylkkanen has over twenty years experience in process and project engineering and energy integration consulting. Prior to joining American Process, Mr. Pylkkanen served as President of Omni Weight Control, a start-up company for industrial and commercial weighing applications. Mr. Pylkannen previously held engineering positions at Aquatech International, an industrial water treatment supplier and (Smurfit) Stone Container, a pulp and paper manufacturer. He received a Masters of Business Administration from Carnegie Mellon Graduate School of Industrial Administration and a Master of Chemical Engineering from Michigan Technological University.

Sophia Rouzinou - DEI

Sophia Rouzinou

Technical Director, Process Integration

Ms. Rouzinou has expertise in process design, modeling, and optimization. She is also an expert in using Pinch Analysis for energy integration. Ms. Rouzinou received a MS in Process Integration from the University of Manchester Institute of Science and Technology in the United Kingdom and a degree in Chemical Engineering from the University of Patra in Greece.