Cuong T.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

#erlang (Ejabberd, MongooseIM, Cowboy) #C++ (Qt framework) #nosql DB (Cassandra, Solr) Excellent understanding of XMPP from client to server. I have implemented XMPP client for web app (using Strophe), android app (using Smack), desktop app (using libjingle). On ejabberd/mongooseIM, I have implemented many modules that defines own presence, iq, message, even I can define own stanza. Execellent understanding WebRTC. I have implemented Linux application that uses XMPP or Websocket for signaling and WebRTC for media transport to establish p2p audio&video call. Source code of Android WebRTC application are public on github. In these days, I spend free time on + Cowboy web server and Alice AIML chat bot. + forex trading and indicators implementation for MT5.