For my first few years I was the visual and interaction design lead for YouTube iOS and helped design YouTube's first iOS apps with a team based out of London. I also helped design the Capture app, the mini-player, offline/background playback, YT TV, YT Premium and many other product initiatives.
Here are some core screens for the iOS app when we introduced the mini-player (patent).
Material design concepts for the Android app.
I did a bunch of iterations for the Capture app icon. Main challenge finding a look that combined a lens with the YT logo.
I decided the logo needed a refresh, so I made it so.
Here are a couple "off-brand" looks for some concept UI that I led the visual development of.☻/