[Hiring] EXPERT BACKEND ENGINEER — MULTI-AI DEBATE WEBAPP

====================================== [HIRING] SENIOR BACKEND PYTHON ENGINEER — LIGHTWEIGHT MULTI-AI WEB SYSTEM ====================================== Company: AI Smart Inc. (A Subsidiary of MC Square Inc.) Project Name: THINK TANK (MVP Stage) Budget: Fixed Price ($400 - $600 based on verified portfolio) Timeline: Hard-locked 7 to 10 Days Production Runway from Acceptance Stack: Python (FastAPI / Django) or Node.js + Supabase (PostgreSQL) + Stripe API ABOUT THE POSITION: AI Smart Inc. is launching "THINK TANK," a highly responsive, lightweight B2C web application that allows consumers to input general complex queries and witness a synchronized cluster of multiple premium LLM models cross-interact inside a background chamber to output a unified, comprehensive synthesis conclusion. We are seeking a highly disciplined backend systems architect to construct this clean web routing system from scratch. This application is strictly text-in, text-out, structured text stream caching, and asynchronous cloud API loop management. There is NO complex frontend asset animation and no graphic engines. EXPECTED HIGH-LEVEL DELIVERABLES: 1. THE CORE CHAMBER: Ingest a master query and route it asynchronously via developer API keys into a multi-model endpoint array (GPT-4o, Claude 3.5, Gemini 1.5). Execute internal consistency loops and merge outputs into a clean synthesis dashboard view. 2. MODULAR API PLUG-IN EXPANSION SLOTS: Build a flexible model routing infrastructure that allows the admin to dynamically hot-swap or add extra regional/national LLM engine slots (Up to 5 concurrent models) without breaking the core backend. 3. FINANCIAL PIPELINE GATES: Integrate comprehensive Stripe API wrappers with billing webhooks to manage a multi-tiered transactional gating structure (incorporating micro-transaction pay-as-you-go loops and automated user history database caching logs). *CRUCIAL SECURITY NOTE: The exhaustive, line-by-line programmatic logic flow chart, exact mathematical multi-agent prompt sequencing instructions, and step-by-step transaction counter trigger rules are completely finalized and secure. These granular source specifications will be provided EXCLUSIVELY to the single selected engineer under formal platform nondisclosure terms upon official milestone contract bonding. APPLICATION INSTRUCTIONS: To be considered for the engineering seat, please reply with: 1. Evidence of past production-grade Stripe billing and webhook synchronization loops you have built. 2. Confirm you can deliver this clean, text-driven backend within our budget ($400-$600) and strict 7-10 day deployment sprint window. Best regards, Mansung Choi CEO, AI Smart Inc.