Matheus A.

I build AI-powered products end to end — architecture, backend, frontend, mobile, deployment. 10+ years engineering. $200K+ earned on Upwork, 100% Job Success, Top Rated Plus, and clients who've stayed three years and longer. Most AI work on here stops at a workflow or a wrapper. Mine doesn't. If the thing you want needs a real database, an API that doesn't exist yet, a customer portal and an iOS app hanging off it, that's one engagement with one person — no handoffs, no integration gaps, no "that's out of scope". WHAT I BUILD - AI platforms for specific industries — the full system, not a demo. I've built systems in across several verticals including healthcare, HR, finance, travel, ecommerce, education and more. - AI agents that do real work: qualify leads, triage inboxes, extract and route documents, answer customers from your own data - Web apps in Next.js and React, with the backend and infrastructure underneath them - iOS and Android apps in React Native/Expo, shipped to both stores - Operations automation where it earns its place — CRM sync, multi-channel routing over WhatsApp, email and Slack, document pipelines - The unglamorous half: auth, billing, deployment, monitoring, and the maintenance after launch STACK Claude API, OpenAI API, Next.js, React, Node.js, TypeScript, React Native/Expo, Supabase, MongoDB, PostgreSQL, Stripe, WhatsApp Business API, Google Workspace, HubSpot, AWS, n8n HOW I WORK Former Product Manager at Baidu, so I scope in outcomes, not tickets. Bring me a business problem rather than a spec and I'll tell you what it should be before I build it — including the parts you don't need. I'll say when something is a bad idea before you pay me to build it. Melbourne-based and comfortable overlapping US and European hours. Tell me what you're trying to build and I'll tell you what it actually takes.