Please, would you work as freelancer?

[parubabr]

I have a XMPP (Jabber) service, hosted in a cloud server (with Debian 9 and public IP), and a simple chat software for Windows created with Delphi (7 / XE3). Chat users can already send/receive small files (KB) using in-band transfer (client1<->server<->client2), but this is slow and not efficient at all. I'd like to allow users to share bigger file/streams (MB) out-of-band (peer-to-peer) and need a sample code on how to archive this. Please, would you work as a freelancer for this job? Thanks!