Architected full-stack AI document assistant enabling conversational PDF querying through Next.js, LangChain, and OpenAI embeddings, implementing dual-parser fallback strategy (pdf-parse + pdfjs-dist) to handle diverse document structures. Engineered scalable vector search pipeline using Pinecone with per-file namespace isolation and batched embedding generation, reducing query latency while optimizing OpenAI API costs through strategic chunking and retrieval configurations. Built end-to-end monetization infrastructure integrating Stripe subscription webhooks, Clerk authentication with SSR guards, and S3 presigned URLs for reliable region-aware uploads, handling invoice.payment succeeded and checkout.session completed events with comprehensive error logging. Delivered real-time streaming chat interface leveraging LangChain's VectorDBQAChain with GPT-3.5-turbo and Vercel AI SDK, implementing persistent message history via Prisma ORM with cascading deletes and user-scoped document management across PostgreSQL.

Architected a full-stack design platform using Next.js 15 and Fabric.js for canvas manipulation, enabling users to create and edit designs with 20+ tools including shapes, text styling, image filters, and freehand drawing with real-time state management. Built type-safe API layer with Hono and Zod validation handling project CRUD operations, subscription management, and integrated Replicate AI for background removal and Stable Diffusion 3 for AI image generation with custom prompt configurations. Implemented authentication system supporting multiple providers (GitHub, Google, Credentials) using NextAuth with Drizzle ORM and Neon Postgres, managing user sessions, project ownership, and role-based access control across API endpoints. Integrated Stripe payment workflows with webhook event handling for subscription lifecycle management (checkout, billing portal, invoice processing) and connected Unsplash API for stock image library with 50-image pagination.

Developed an immersive, scroll-driven landing page recreation for GTA 6 using React and GSAP. Implemented advanced scroll-triggered animations with mask reveals, video transitions, and parallax effects. Built custom hero sections with dynamic gradient backgrounds, interactive character showcases for Jason and Lucia, and seamless video integrations using GSAP ScrollTrigger for cinematic storytelling.