John Dave Rosales currently serves as a Technical Service Engineer at Kersia, focusing on inventing a food safe world since May 2023. Prior to this role, John Dave Rosales accumulated extensive experience at Diversey, a division of Sealed Air, where positions included Applications Engineer from October 2007 and Applications Manager from November 2016 to October 2023. John Dave Rosales holds an educational background from the University of Santo Tomas.