Full Stack Developer for AI Architecture App

Project Title: Full-Stack Developer for Complete AI Architecture, Material Marketplace and B2B Contractor Platform (casAIapp.ro) Description: We are looking for an expert Full-Stack Developer to build a Minimum Viable Product (MVP) for an innovative, mobile-responsive web application named casAIapp.ro. The platform transforms architectural sketches and photos into 3D photorealistic renders and links those renders directly to an itemized material budget (via affiliate APIs) and a local contractor marketplace. UI/UX Design Direction (Premium Dark Mode & Branding): The website must have a luxury, high-end, and exclusive feel. Use a dark charcoal or matte black background with a premium glassmorphic effect (semi-transparent smoky glass aesthetic) for containers and panels. Key highlights, thin borders, and main action icons must use subtle gold gradients or warm ambient lighting effects. Typography must be clean, modern, crisp, and high-contrast (pure white text against dark backgrounds). Important Visual Branding Requirement: While the technical domain remains lowercase for routing, the name must be displayed visually across all user interfaces, texts, and logos exactly with uppercase "AI": casAIapp.ro. The interface must look premium, modern, and highly intuitive on mobile screens (PWA), iPads, and PCs. Key Responsibilities and Complete Feature Set: Frontend and Mobile Optimization (PWA): Build a clean, highly responsive mobile web interface using React or Vue where users can easily upload photos or sketches from their phone gallery. Must include a simple length, width, and height manual input for accurate material scaling and wall/surface/ceiling calculations. AI Render Engine & AI Document Processing (Stable Diffusion, ControlNet, OCR and Depth Estimation): Connect the backend using Node.js or Python/FastAPI to a cloud GPU provider like RunPod or Replicate and text/vision LLM APIs (like OpenAI). The AI engine must support: Standard interior and exterior sketch or photo transformation. Advanced Inpainting for specific prompts, such as placing a pellet fireplace in a living room corner, adding solar panels to roofs, installing HVAC systems, or shaping gypsum board structures (drywall ceilings and illuminated recesses) [local]. Luxury Spa and Bathroom generations, including freestanding jacuzzis and premium large marble tile textures. Construction transformations, such as turning a raw brick or concrete house structure into a fully finished key-in-hand home exterior (including external wall insulation, dynamic facade plaster textures, and continuous seamless floors like microcement or epoxy resin) [local]. Spatial Depth Maps to accurately anchor furniture, flooring, and structures relative to the room's geometry. Outdoor Landscaping, Yards and Pools: AI must detect empty terrain and yards to place grass, premium paving, automatic gates, hedges/greenery, septic tanks/wastewater treatment units, and modern inground swimming pools with realistic water reflections [local]. AI Document Processing (OCR): Implement an optional AI document processing pipeline where users can upload local regulatory documents (Certificat de Urbanism). The system must extract regulatory data (POT, CUT, height restrictions) using a text/vision API to automatically translate it into plain text and constrain the AI house generation to these legal limits [local]. E-commerce and Furniture Marketplace Integration: Implement an object-tagging system under the generated render. Connect via API to Romanian Affiliate Networks like 2Performant or Profitshare to pull live product data, prices in RON, and affiliate URLs for furniture from Somproduct or Vivre, building materials, drywall supplies, and insulation from MatHaus or Dedeman, and appliances [finance, local]. B2B Contractors, PVC Windows, HVAC and Home Automation Marketplace: Create a dedicated database for local firms split by Categories: General Contractors, Interior Designers, PVC Windows and Fenestration (VEKA or Salamander partners), Gate Automation and Rollers, Electricians (ANRE), Certified Plumbers, Solar Panel Installers, HVAC and Heat Pump Specialists, Landscaping/Nursery Companies, Drywall and Interior Finishing Crews, and Epoxy Flooring / Septic System Specialists [local]. Build a Lead Generation system where users can click "Get Quotes" based on their AI project. Implement a Contractor Dashboard where local firms register and pay via Stripe using a Pay-per-Lead model (from 50 to 250 RON per unlocked customer phone number). Filter leads automatically by Romanian Counties (Județe) [finance, local]. Requirements: Strong experience with Stable Diffusion APIs (SDXL or Flux), ControlNet, Inpainting, text/vision OCR APIs, and commercial e-commerce or affiliate API integrations. Focus on clean code, speed (renders under 10 seconds), and high security for payments. Please share examples of previous AI, SaaS, or marketplace platforms you have built.