Engr. Mamawal received his Bachelor of Science in Mechanical Engineering degree from De La Salle University, Manila Philippines in 1980 and completed his Master in Business Administration credits from Ateneo Graduate School of Business, Makati, Philippines in 1985. He is a Registered Mechanical Engineer (RMEE) and the Chairman of the Automotive Engineering Technical Division of the Philippine Society of Mechanical Engineers (PSME). Engr. Mamawal started his career as a Technical Management Trainee of Unilever Philippines, U.N. Avenue, Manila and was engaged in the Engineering and Production departments of the Foods, Personal Care and Detergent operations, as well as Engineering Services including 3MW Co-Gen Power Plant, boilers, Engineering Stores, company vehicles, air conditioning & refrigeration,  etc. He transferred to Wyeth Philippines as Production Director of the Nutritionals Division in 1994, responsible for the manufacture of leading infant nutritional products. In 2003, he became Vice President of Toyota Motor Philippines (TMP) Marketing Division Customer Service Operations (CSO) Technical and Service departments, External Affairs, and other duties. From 2012 to 2021, he served as a Technical Consultant of TMP School of Technology. He started being an industry lecturer at the University of Santo Tomas in 2012.