The projects and roles that I have been involved in are:Team lead and senior backend developer for the app of - 1) Attendance. 2) HR. 3) Payroll. 4) Social. 5) CRM, 6) Learning Platform Integration features. The technology stack that is used is - Flutter, Angular, Python (Lambda), DynamoDB, PostgreSQL, AWS (API Gateway, Lambda, DynamoDB, Secret Manager, CloudWatch, Route 53, IAM, S3, Amazon EventBridge).Team lead and senior backend developer for the app of passenger app features are - 1) Driver Location Display: Instantly view your current location. 2) Ongoing Trips Dashboard: Monitor ongoing trips in real-time. 3) Trip History: Access a detailed record of past trips. The technology stack that is used is - Flutter, Angular, Python (Lambda), PostgreSQL, AWS (API Gateway, Lambda, Secret Manager, CloudWatch, Route 53, IAM, S3, Amazon EventBridge).Mobile developer for the delivery app. The features are - 1) Seamlessly check in to the shop that is scheduled for delivery. 2) Organize items within the shop for convenient access and retrieval. 3) Generate and provide invoices for delivered items. 4) Efficiently conclude the delivery process by checking out from the shop location.  The technology stack that is used is - Flutter, Java, Azure, MySQL.Mobile developer for POS app. The features are - 1)Streamline retail operations with a user-friendly interface, allowing for the efficient organization of products within the point-of-sale system. 2) Generate and print vouchers seamlessly, providing a quick and convenient way to issue receipts and track transactions. The technology stack is - Ionic, Java/Tomcat, My SQL, Azure.