Full-Stack Developer for Lean AI-Powered Personal Discovery Web App

I’m seeking an experienced full-stack developer to build a focused, mobile-first proof of concept. The application will: Collect a visitor’s birth information Use an established third-party calculation service or library Compare results with a supplied database of notable people Select and present five personalized matches Generate concise AI-supported descriptions Accept a one-time micro-payment for an additional personalized AI response Display and email the results automatically The landing-page design, customer journey, written content, visual examples, and categorized notable-person database are already prepared. The project requires: Responsive front-end development Database import and matching logic Third-party API integration OpenAI or comparable AI integration Payment processing and webhooks Transactional email Basic administration and error logging Testing, deployment, documentation, and code handoff This is a lean Phase I launch—not a subscription platform, native mobile application, advanced dashboard, or ongoing AI chat product. Please provide: Your recommended technical approach A fixed-price estimate Estimated schedule and milestones Third-party and ongoing costs Two relevant examples Who will personally perform the work Please begin your response with: “I understand this is a focused proof of concept.” Then briefly identify the greatest technical risk you see and how you would address it. Detailed requirements will be shared with selected candidates.