Emilio B.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.

If any of the following looks like what you need to be done, then I can help you reach your goal. * Add chat capabilities to your web site, social network or online game * Create a mobile chat application in the likes of WhatsApp / Line / Kakao / Telegram. * Obtain reliability and responsiveness on unstable network connections * Scale to millions of users * Unique features to you product * Need guidance on the next step to take * Someone who can deliver you a solution from start to finish Great expertise on Erlang, XMPP, Node.js, High-concurrency and Massive scalability. I have done custom developments for chat applications, including: * Ejabberd modules and core modifications * Web chat client (using strophe.js) * Android chat client (using aSmack) * Desktop XMPP clients (using XMPP4R, SleekXMPP)