[3] After graduation, he worked as a formulation chemist for L'Oreal from 2004 to 2008 and then moved back to the Philippines to pursue a career in basketball.
After his contract expired with Mandaue, he returned to the United States and earned a strength and conditioning coach certification at the Institute of Sports and Science.
He returned to Manila and got a job for ABL's AirAsia Philippine Patriots' as their strength and conditioning coach in 2011.
In 2016, Gavina was named as the first assistant coach of Manny Pacquiao for the Mahindra Floodbuster, replacing Chito Victolero.
[5] On 2018, Gavina returned to PBA after being tapped as an assistant coach of the Rain or Shine Elasto Painters.