Project Overview I need a backend developer to build a small connector service between a WeChat Mini-Program front-end and an external API service. This is a simple MVP version. The backend only needs to receive form data, forward the data to an external API, and return a structured response. No business logic is required. No conversation engine. Just clean routing and JSON handling. ⸻ What the backend needs to do 1. Provide three POST endpoints The endpoints are: 1. today-question 2. relationship-radar 3. destiny-three Each endpoint receives form fields, calls an external API, and returns a standardized result. ⸻ 2. Form fields to be received A. Today’s Question fields gender birth date birth time birth city question text B. Relationship Radar fields user gender user birth date user birth time user birth city partner gender partner birth date partner birth time partner birth city C. Destiny Three fields gender birth date birth time birth city ⸻ 3. Technical requirements Backend should include: • Input validation • Basic error handling • Logging • Environment variables for API keys • Rate limit protection • CORS setup • A health check endpoint ⸻ 4. Preferred technologies You may use either of the following: Option 1 Node.js + Express or Fastify Option 2 Python + FastAPI The service must be deployable on Render, Vercel, AWS, or your preferred platform. ⸻ 5. Deliverables • A working backend with the three endpoints • Clean folder structure • Deployment to a live environment • API documentation in English (README) • GitHub repo with all source code ⸻ 6. Milestones Milestone 1 Basic routing implemented Milestone 2 External API integrated and error handling added Milestone 3 Deployment completed and documentation delivered