Sai Sameera Chintala

• Migrated a large-scale monolithic application into microservices architecture using Java 17, Spring Boot, RESTful APIs, Hibernate, DB2, Kafka.
• Designed and developed responsive Angular (TypeScript) UIs, implementing routing, reactive/template-driven forms, and reusable components for seamless user experience.
• Built and deployed services on OpenShift Container Platform using Docker, Kubernetes, ensuring scalability and high availability.
• Implemented CI/CD pipelines with Jenkins and GitLab for automated build, test, and deployments across environments.
• Applied Agile/Scrum methodologies with TDD (JUnit, Mockito, Jasmine, Karma) for test-driven, reliable delivery.
• Created and maintained technical design documents, UML diagrams, and data flow models throughout SDLC.
• Worked with AWS (EC2, S3, RDS) for cloud deployment and integration with microservices.
• Performed application debugging, log monitoring, and production support using Splunk and Kibana.
• Collaborated across onshore/offshore teams to manage dependencies, resolve blockers, and deliver sprint goals.
• Optimized database queries, ensured data integrity, and performed migrations across DB2 and Oracle.
• Developed and consumed secure REST APIs with Spring Security, JWT authentication, and API testing via Postman.

Environment: Java 17, Spring Boot, Angular, Kafka, DB2, Oracle, Jenkins, Docker, Kubernetes, OpenShift, AWS, GitLab, Postman, Splunk, Kibana.

Project: Tennessee Family & Child Tracking System (TFACTS)

• Migrated legacy application from OptimalJ/EJB 2.0 to Spring Boot microservices with RESTful APIs and JDBC-based data access.
• Replaced EJB-driven DB access with Oracle PL/SQL stored procedures and packages supporting CRUD operations across ~120 tables.
• Developed microservices using Java 8, Spring Boot, and restructured existing Struts/Java 1.7 modules into POJO-based applications.
• Automated code generation for PL/SQL and Java source, reducing manual development effort significantly.
• Provided Oracle PL/SQL development & optimization (stored procs, packages, exception handling, debugging).
• Created technical documentation and supported migration of front-end components using JSP, Servlets, Angular, HTML/JavaScript.
• Used CVS for version control, JUnit for unit testing, and Eclipse IDE for development.

Environment: Java 1.7/8, Spring Boot, Struts 1.3, EJB, Oracle PL/SQL, Stored Procs, Eclipse, JUnit, CVS, JSP, Servlets, HTML, JavaScript.

Starbucks Inventory Management – CPR Migration

• Migrated legacy ASR system to CPR, enabling automated store-level ordering, sales forecasting, and optimal replenishment to reduce waste and improve customer demand fulfillment.
• Designed and developed microservices using Kotlin, Java 8, Micronaut, Spring Boot, interfacing with Kafka and REST endpoints.
• Built data pipelines to integrate CPR with ScyllaDB (NoSQL), DB2, PostgreSQL, ensuring reliable and scalable data management.
• Implemented API Gateway to manage communication between clients and backend microservices.
• Developed RESTful services to integrate CPR with external systems (o9 platform), supporting Read/Write APIs for forecasting and ordering.
• Containerized services with Docker, deployed and orchestrated via Kubernetes for scalability and high availability.
• Automated deployments using CI/CD pipelines with Jenkins; applied Git for version control and code reviews.
• Created unit and integration tests with JUnit, Mockito, and PowerMockito, ensuring TDD practices.
• Conducted Postman testing for API endpoints (GET, POST, PUT, DELETE).
• Monitored logs and system health, improving reliability using Kubernetes monitoring tools.
• Collaborated in Agile/Scrum ceremonies—sprint planning, reviews, retrospectives—ensuring on-time delivery.
• Coordinated with cross-functional teams to resolve dependencies and streamline release processes.
• Actively contributed to documentation of APIs, data flows, and design specifications for knowledge sharing and future scalability.

Environment: Kotlin, Java 8, Micronaut, Spring Boot, Kafka, ScyllaDB, DB2, PostgreSQL, Docker, Kubernetes, Jenkins, Git, AWS, JIRA, Postman, Conductor, Agile.

Project: Legacy Migration from OptimalJ to EJB/Stored Procedures

• Migrated legacy OptimalJ-generated code to EJBs and PL/SQL stored procedures.
• Involved in requirement gathering, high-level design, and database schema design with complex SQL queries.
• Developed Training and Appraisal modules using Java, JSP, Servlets, and JavaScript.
• Accessed stored procedures/functions via JDBC Callable Statements; built web-based reporting with JSP/HTML/JavaScript.
• Conducted code reviews, enhancements, and maintenance, ensuring code quality and performance.
• Coordinated installation and deployment activities.

Environment: Java 1.7, JSP, Servlets, HTML, JavaScript, SQL, JDBC.

Project: PNC Bank – Mortgage Loan Recovery System

• Developed single-page applications using Angular 2, TypeScript, HTML5, CSS3, integrated with cloud-native Spring Boot microservices.
• Migrated monolithic services to microservices architecture with Spring Cloud (Eureka, Ribbon) and secured APIs using Spring Security.
• Implemented data access layers with Hibernate/JPA, Oracle PL/SQL, and MongoDB JSON documents.
• Integrated JMS, ActiveMQ, Kafka, Zookeeper for messaging and asynchronous processing.
• Deployed scalable, fault-tolerant apps on AWS (EC2, S3, RDS, DynamoDB, Lambda, CloudFormation, IAM, SQS).
• Automated CI/CD pipelines with Jenkins, Maven, Git, and performed unit/system testing with JUnit, TestNG, Selenium, and Cucumber.
• Created Splunk dashboards and reports for monitoring and analytics.

Environment: Angular, Java 7, Spring Boot, Spring Cloud, Hibernate, Oracle, MongoDB, Kafka, ActiveMQ, AWS, Selenium, Jenkins, Git, Splunk.