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Jose Antonio Campillo Espallardo is an experienced Android Senior Developer, currently working at O2O - One2One Digital Strategy since November 2022, and concurrently at NTT DATA Europe & LATAM and everis since July 2021. Prior experience includes a role as Desarrollador de Android at Soluciones Tecnológicas Second Way from August 2020 to July 2021, as well as a longstanding web development role from January 2015 to July 2021 under Cuenta Propia, focusing on both front-end and back-end development using JavaScript frameworks like Vue. Additionally, Jose Antonio worked as a freelance Android Developer from January 2008 to June 2021.