Led the development of a full-stack web application, handling both frontend and backend components. Integrated Stripe APIs to enable seamless online payments, including one-time payments, subscriptions, and installment plans. Implemented persona, creative brief and user behavioral science via AI. Developed a dynamic subscription system supporting multiple plans, renewals, and cancellations. Leveraged Cloud Run and Firebase Cloud Functions to deploy scalable, serverless backend services for handling payments and background processes.