Developed secure, scalable test-driven REST APIs in Python, efficiently managing 20K daily active user requests deployed via API Gateway and Lambda.Engineered RDBMS and Dynamo DB NoSQL database design for the efficient management of 50K daily transactions.Refined complex PostgreSQL queries and achieved a substantial 60% reduction in execution time through strategic streamlining efforts.Achieved a consistent 100% completion rate for feature development within tight two-week sprint deadlines.Initiated cost-saving measures by vigilantly monitoring AWS resource usage reports in DEV and UAT environments, resulting in a 5% reduction in monthly billing.Leveraged Pandas to perform custom data validation on a dataset exceeding 1 million records.Implemented and managed GitLab CI pipeline to automate Unit and Integration testing, as well as static and code security analysis with SonarQube.Engaged in code reviews during PR (Pull Request) processes, contributing to collaborative and high-quality development practices.Provisioned backend resources independently using AWS SAM and Serverless Framework for streamlined deployment and management.Contributed to cross-functional DevOps initiatives by establishing CI/CD pipelines using CodeBuild and CodePipeline.Crafted extensive technical documentation outlining application functionality for the testing team and user manuals for customer usage using Generative AI tools.Resolved high-priority L2 & L3 incidents promptly, delivering valuable support to end customers and ensuring ticket closure within 24 business hoursFacilitated key client meetings to present ideas and gather feedback, fostering continuous improvement in project execution.