•Deployed banking microservices on AWS, ensuring scalable, reliable, and secure cloud-based operations for high-traffic financial transactions. •Developed banking applications with advanced security measures like encryption and authentication protocols, safeguarding sensitive financial data. •Developed and maintained Java-based financial applications, focusing on data persistence with JPA and Hibernate to ensure efficient data handling in high-security environments.•Utilized Docker to containerize banking applications and deployed them in a Kubernetes cluster for efficient scaling, high availability, and real-time transaction processing. •Designed and implemented multithreaded financial systems to handle real-time data processing, ensuring secure data handling and meeting industry performance standards.•Implemented Spring Batch for processing large volumes of transactional data, ensuring data integrity and reducing processing time by 20%. •Developed secure RESTful APIs using Spring Boot and Java to facilitate seamless transactions, enhancing the security and efficiency of banking services.•Created extensive test cases using JUnit and Mockito to ensure the reliability of real-time banking services, maintaining code quality and functionality during rapid deployments.

•Developed and integrated APIs using AJAX to enhance communication efficiency between client-side applications and backend services, improving response times by 25%.•Utilized the Spring framework to develop secure backend systems for healthcare policy management, ensuring confidentiality and HIPAA compliance.•Developed and deployed RESTful web services using Spring, enabling secure and reliable data exchange between internal systems and third-party applications. •Applied Java Collections API and multi-threading techniques to optimize backend performance, ensuring quick data processing and reducing latency by 30%.•Implemented RESTful web services with Maven build scripts, streamlining deployment processes and improving build efficiency.•Designed Java web services for healthcare interoperability using standards like HL7, ensuring seamless integration with electronic health record (EHR) systems.•Enhanced backend efficiency by leveraging Spring for secure, scalable applications, driving a 20% increase in system performance and reliability.