John Jambor is an experienced plant manager currently working at Darling Ingredients since October 2025. Prior to this role, Jambor served as both Bio Production Manager and Bio Production Supervisor at Pel-Freez Biologicals from March 2021 to October 2025. Previous experience includes a position as Shift Supervisor at Jupeng Bio, Inc. from November 2012 to December 2020, where responsibilities included overseeing the daily operations of a waste to ethanol facility. Earlier in Jambor's career, positions included Team Member Specialist at Novartis, Manufacturing Technician at Benchmark Biolabs, and Aseptic Technician at Pfizer, focusing on the assembly of animal vaccines in sterile environments. Jambor holds a degree from the University of Nebraska at Kearney, completed in May 2000.
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