I am a roku developer with expertise having started with roku's old sdk "brightscript" and then in roku's new sdk "Scenegraph " , have practical experience like implementation of RAF , 3rd party analytics, Roku In channel subscription , have also experience in integrating xtream codes panel , with authentication and implamenting live and vod. The major part , have the best experience in developing user friendly UI's like mimicking the web UI into Roku TV UI .
I can share you other private channels links on Chat.