Hello Andres,
This should be take over by ABAP developers and functional consultants.
The developers know how to build the screens, etc. The functional team can tell the developers what is really needed.
The Basis team provides them the infrastructure, i.e. they will have the ITS configured, so the service can be executed.
If you want to have your custom transactions migrated to ITSmobile, some rework probably is needed, as not all screen elements are supported via ITSmobile.
You can visit the ITSmobile wiki for more details.
Regards,
Cris