Duong 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.

You can’t judge code, and you shouldn’t have to. Send me your idea and you get back a scoped feature list, a timeline, and a fixed price within 24 hours, before you spend anything Almost every founder who messages me is asking the same thing underneath: will anyone actually pay for this. A deck won’t answer that. Neither will a prototype people click through politely and then forget about. What answers it is a working product with a payment button and real users on the other side of it I build that alone. Web apps, mobile apps, internal tools, AI features, automation, QA, and whatever infrastructure holds the thing up. You talk to me, not an account manager. When something breaks there is nobody for me to hand it to The front end is usually React, Next.js, TypeScript or Svelte, with FlutterFlow, Lovable or WeWeb when speed matters more than control. Behind it: Hono, NestJS, Node, Bun, Xano, Postgres, Supabase, Cloudflare D1, Neon or any tech that you prefer. The AI work is the part founders expect back as a demo. Chat, document analysis, internal copilots, workflows that store data and remember who the user is, on OpenAI, Claude or Gemini. I ship that into production, not into a video Any studio can hand you something in three weeks. Month four is the real test, when you have paying users and the product has to be extended instead of rewritten. So you get docs and a codebase your next developer can read. Not a black box with my name on it Most of my work is legal tech and B2B SaaS, with some proptech, healthcare and AI tools. Recent builds: a multi-tenant AI legal document platform, a construction workforce marketplace with job matching and payments, a property management system Founders usually arrive wanting a clickable MVP to test demand, a revenue-ready product without hiring three teams, or a prototype that runs on their laptop and nowhere else Send me your idea. Scope, timeline and price come back within 24 hours, and you decide from there