1. Design, develop, and maintain RESTful APIs and WebSocket endpoints using Express.js (Node.js) for core super-app modules including user authentication, food ordering, cab booking, real-time driver/delivery tracking, and payment integration with Razorpay — ensuring APIs are scalable, secure, and well-documented. 2. Build and maintain cross-platform mobile application screens and components using React Native, including but not limited to — onboarding & login flow, home feed, restaurant/menu listing, cab booking interface, live order & ride tracking screen, and order history — consuming the Express.js backend APIs and integrating Google Maps SDK for real-time location UI. 3. Containerize the Express.js backend services using Docker and deploy, manage, and monitor them on AWS Elastic Kubernetes Service (EKS) — including writing Kubernetes manifests (Deployments, Services, Ingress), setting up CI/CD pipelines via AWS CodePipeline, configuring auto-scaling policies, and using Amazon CloudWatch for logging and performance monitoring.