Jorge Castillo
Software Engineer at TwitterEng
Murcia, Region of Murcia, Spain
Summary
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RockstarJorge Castillo is a senior software engineer and Google Developer Expert for Android and Kotlin with 11 years of experience building robust Android apps and libraries for companies like Twitter and Disney Streaming. He combines deep practical expertise in Jetpack Compose, animations, Kotlin, and functional programming with hands-on leadership from tech lead and senior roles across remote and distributed teams. Jorge publishes courses on advanced Compose topics and maintains open-source UI work—like a Material progress circle for FloatingActionButton—demonstrating a focus on polished, animation-driven UX. Known for migrating large codebases to Kotlin, improving CI and testing practices, and shipping clean architecture at scale, he brings both product-minded engineering and mentorship to teams. Based in Murcia, Spain, he blends client-facing app experience with a passion for developer education and reusable UI components.
12 years of coding experience
Github Skills (8)
material-design10
uid10
front-end-development10
ui-design10
animation10
android-development10
interface-design9
user-interface9
Programming languages (11)
Github contributions (5)
JorgeCastilloPrz/FABProgressCircle
Jun 2015 - Jun 2015
Material progress circle around any FloatingActionButton. 100% Guidelines.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:78 commits, 1 PR, 30 pushes in 21 days
Contributions summary:Jorge primarily focused on developing the UI components for a material progress circle for a floating action button. Their work involved adding animation logic and listeners, refactoring the progress arc view, and incorporating features like a complete animation cycle. They also updated the project structure, including the addition of configurable settings, such as final icon and animation duration. The user's contributions enhance the visual feedback for users.
floatingactionbutton
Sabirjan/PagedHeadListView
Aug 2014 - Nov 2014
Contributions:22 commits in 3 months
headerandroid-libraryandroidkotlinpaginated
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