Build and deploy customer-critical SaaS features while owning infrastructure, CI/CD, production servers, monitoring, and platform reliability. Develop full-stack applications using React or Next.js, TypeScript, Node.js, and databases such as MongoDB or PostgreSQL. Manage end-to-end feature delivery, including design, coding, deployment, and monitoring. Automate infrastructure with cloud services, containers, and scripting while collaborating with the existing full-stack development team.