• Architected and shipped a production SaaS form builder with component-based architecture, drag-and-drop canvas (dnd-kit), multi-step form rendering with Framer Motion transitions, and a real-time notifications center with client polling. • Designed an async AI insights pipeline using Upstash QStash to decouple OpenRouter AI workloads from the request cycle; implemented Upstash Redis caching on public embed routes to eliminate redundant DB roundtrips. • Implemented Better Auth (Email + Google OAuth), SMTP email alerts via Nodemailer, and per-response AI summary pages with markdown rendering; deployed serverless on Vercel free tier, achieving sub-200ms response times on cached embed routes.