Android RTMP Implementation and Custom ROM

We need someone who is comfortable with modifying and packaging Android ROMs. We have a particular hardware device and received the firmware sources from the manufacturer. We need you to implement and package various customizations for this ROM to suit our needs. The primary focus will be implementing RTMP support into the native Android MediaPlayer class. The ROM has already been customized to support HTTP Live Streaming (HLS) but we also need RTMP support. Next we will need to implement tweaks such as increasing the icon sizes, enable/disable certain settings, and including support for our wireless keyboard controller. Finally we need to package it up along with some various APK's and send it back to the manufacturer. To be considered for this job please provide specific examples of your work that are relevant to this posting.