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Célio Oliveira Gonzaga Júnior is a seasoned software engineer with extensive experience in Android development, specializing in MVVM architecture, Kotlin, RxAndroid, ExoPlayer, and Dagger 2. Currently serving as a Senior Software Engineer at ArcTouch since April 2022, Célio has previously worked at CI&T, Compasso UOL, and ioasys, where responsibilities included code maintenance and optimization in Java and Kotlin, API integration, and feature development within the Android ecosystem. Early career experience includes roles at My Mixtapez Brasil as an Android Developer, focusing on application support and performance improvements, and positions in IT management and internships in web development and user support. Célio holds a Bachelor of Technology in Information Systems from Universidade FUMEC, along with degrees in Computer Engineering and Biological Sciences.