• Built an AI appraisal platform for luxury handbags; users upload photos to get instant valuations & resale insights. • Engineered FastAPI orchestration with LangGraph parallel workflows, reducing appraisal latency by 40%. • Integrated Gemini 3 Pro vision models for image-based brand/model identification, achieving 95%+ detection accuracy. • Built Node.js + Puppeteer scraper aggregating real-time pricing from 3 luxury resale platforms with CAPTCHA handling. • Leveraged Perplexity API for market analysis & built Plotly charts with outlier removal & similarity scoring. • Developed React web & React Native mobile apps with Supabase auth & data; deployed via Docker & Coolify