Build and maintain IDRE, a healthcare payment dispute platform, across frontend and backend systems. Own transaction logic for disputed claims, settlement calculations, and payment records. Develop with React, Next.js, TypeScript, Node.js, Python, and AWS; improve services, observability, and CI/CD. Ensure HIPAA-grade handling of sensitive data, clarify ambiguous requirements, and deliver features end-to-end in a fast-paced startup environment.