-- Led the strategic redesign of legacy code and database structures, optimizing performance. Engineered internal and external services to streamline database interactions and organizational workflows, enhancing overall operational efficiency.-- Spearheaded a detailed database migration effort, smoothly transitioning legacy data into a highly organized and efficient structure. This meticulous process significantly improved data management.-- Elevated the efficiency of a critical background task by 25%, crucial for facilitating data sharing. This enhancement played a pivotal role in improving overall system efficiency.-- Designed and implemented a secure server for large file uploads, leveraging Amazon S3 for efficient and scalable file storage. Ensured robust file handling to maintain data integrity and accessibility.-- Devised and executed an advanced notification system integrating AWS SNS and SMTP email server functionalities. Enabled timely SMS and email updates with features like block-list management and AWS Pinpoint number verification for secure and effective user communication.-- Designed and implemented a scheduling system empowering doctors to set reminders for patients, prompting timely completion of medical forms before or after appointments. This system streamlined healthcare processes and improved patient engagement.