Management team

Our Staff

Dr. Ofir Menashe
Founder & CEO
Ofir specializes in environmental microbiology. He is the inventor and owner of the small bioreactor platform (SBP) technology for water treatment and utilities. Since 2009, he has focused on the research and development of this innovative technology which utilizes the power of microorganisms for the benefit of humanity. He brings broad experience in biotechnology and water industries, including: Conducting laboratory trials, field pilot tests (beta-site trials), and full configuration treatments. Ofir founded and manages Bio-Castle, which is aimed to commercializing the SBP technology applications. Additionally, Ofir is a faculty member (Senior Lecturer) in the Water Industry Engineering Department, School of Engineering at Kinneret College on the Sea of Galilee. Ofir received his Ph.D. in Biotechnology and Food Engineering (2008), and his M.Sc. in Medical Science (2002) from the Technion- Israel Institute of Technology. He holds a B.Sc. in Life Sciences (1996) from Ben-Gurion University of the Negev, Israel.


Mr. Tsvi Tsur
Founder & Business development Director
Tsvi is a Business development & Director of BioCastle Water Technologies since the company establishment in 2013. Tsvi Tsur is a 30 year veteran in the water business. Tsvi was served as the Chairman of the Steering Committee for Agrotechnology at the Israel Export and International Cooperation Institute (IEICI). The IEICI is an Israeli governmental agency operating under the Ministry of Trade. and Labor to facilitate trade opportunities, joint ventures,and strategic alliances between international businesses and Israeli companies. Prior to IEICI Tsvi spent 10 years as the President and CEO of Plastro Irrigation Systems Ltd.


Ms. Keren Ben-David Malachi (M. Sc)
Process Engineer
Eng. Keren Ben David Malachi brings 12 years of experience in the field of water engineering, emphasis on treatment process design (Sanitary and Industrial) and supervision. Keren gained her M.Sc (2006) and B.Sc (2003) in Civil and Environmental Engineering from the Technion- Israel Institute of Technology.


Dr. Aaron U. Levy (California, USA)
Strategic Board Advisor
Levy is the CEO of Emerging Transformational Ventures (ETV Global, Inc,) an M&A ventures partnerships firm, based in Los Angeles, California. The company specializes in corporate turnaround and financial restructuring, international sales and marketing with a focus on achieving sustainable and profitable growth. Dr. Levy has been involved in our growth strategy, financial business modeling and guidance to our team since 2014. A career CEO, an innovative technologist, and expert in organizational structuring with global operational experience, Dr. Levy led several privately held and publicly traded technology companies as CEO, President & COO from early stages to multimillion-dollar global companies with over $1 billion in valuation. A holder of a U.S patent for a manufacturing process (1999), Levy published Factors Influencing CEOs (2010, 2015) and Digital Printing (2004). Dr. Levy holds a PhD in management, a Masters’ of Science in Aerospace Engineering and Bachelors’ of Science in Electrical Engineering. A professional and experienced aviator, Levy is also an FAA certified Airline Transport Pilot & Flight Instructor.


Mr. Itay Kreisel, (M.Sc)
Process Engineer, Engineering Advisory
Itay is a process engineer, specializes in industrial water and wastewater treatment. Itay brings over 30 years of experience, implementing various treatment technologies, based on Biological, Physico-Chemical, Mechanical, Chemical and Membrane concept . Itay gained his M.Sc and B.Sc in Chemical Engineering from the Technion- Israel Institute of Technology.


Dr. Eyal Kurzbaum
Scientific Advisor
M. Sc in ecology and environmental studies and a PhD in environmental microbiology in the wastewater treatment field, with 14 years of experience in environmental research. Eyal's research focuses on the study, development and optimization, of processes of water treatment for different kind of influents (domestic and industrial) and other issues in environmental microbiology such as microalgae ecology and water disinfection. Using laboratory and field pilot scale systems dedicated to wastewater treatment, research has been devoted to improve performances (removal of organics, phosphorus and nitrogen) intensify systems (compactness) and develop associations of conventional systems with new biotechnological treatment systems. In the last 6 years, Eyal's research interest focuses on environmental microbiology and water treatment. His current research was and is still focused mainly on bioaugmentation treatment approaches using encapsulated microorganisms for water treatment. He holds a position of a researcher at Shamir Research Institute, affiliated to University of Haifa.