Senior engineer to fix an AI-built SMS agent

Less than 1 month, Less than 30 hrs/week United States only I'm a non-technical founder. My product introduces two families by text message and coordinates a first kid meetup: day, time, place, a yes from each side. It runs on TypeScript, Next.js, Postgres, Twilio and the OpenAI API. All of it was written by AI coding agents. The design is sound: a model reads each text, code decides what to do, a model writes the reply, and code checks the facts. Three separate AI-led attempts have each buried that design under stacked rules, and I can't judge the code myself. I need one person with real engineering judgment to own the architecture and tell the AIs no. You're a fit if you've shipped a conversational LLM product to real users, you work in TypeScript, and your instinct is to delete. Individuals only, please. No agencies.