Geofence based Attendance & HRMS – Developed and containerized a geofence-based HRMS using Docker, deploying it to AWS EC2 with a focus on high availability for 150+ daily active logistics personnel. – Designed a location-validation algorithm utilizing real-time GPS coordinates and Haversine formula to enforce check-in boundaries, effectively eliminating proxy attendance logs. – Automated complex data-processing pipelines using Node-cron, generating and delivering asynchronous performance reports via AWS SES, which reduced HR administrative overhead by 15 hours weekly. – Built a robust RESTful API with centralized error-handling and middleware-based validation, ensuring 100% data integrity across cross-site attendance logs.