Hi,
I read project details very carefully and found myself as good candidate for this job. It is not because i have required skills for this job but I am interested in such challenging and well documented project. IT is similar to a service given by company called LogMeIn. I am not sure if they are still operating.
About me, I am ex-Microsoft employee with 8+ years experience in software development and customization using wide range of Microsoft technologies (C#, ASP.NET, MVC,WPF, Window form, Sql Databases, Azure, Sync framework etc.) , Mobile technologies - Android, Xamarin and server side language node.js and Golang.
Your project requires strong network protocol knowlege so that efficient sharing can happen. I have experience on WebRTC protocols, ICE, TURN servers which can be used here. I am bidding here to build prototype for you and if you like we can proceed with final project estimation. Note that it will take at least two weeks to develop running prototype for me.
About my previous work, you can visit my profile to see feedback from previous employer.
Let me know, If you find me suitable for this project. If you want more details, we can discuss over chat.
Thank you,
Shashi