Jun 2020 – Dec 2021 · 1 yr 6 mos · Bengaluru, Karnataka, India

• Contributed as an individual member in an agile framework, engaging in tasks such as interacting with the business team during story grooming and reviewing acceptance criteria.
• Led the transformation of a monolithic application to a microservices architecture using Spring Boot.
• Implemented stories and tasks following Test-Driven Development (TDD) and Pair Programming methodologies. Provided daily progress updates in client scrum meetings.
• Provided guidance to new team members on the effective utilization of Spring Boot, JPA, and Java.
• Developed RESTful microservices using Spring Boot, facilitating inter-microservice communication through RestTemplate and managing data persistence with Spring JPA.
• Integrated Zipkin for monitoring distributed microservices and incorporated Swagger UI for API documentation.
• Implemented Hystrix for latency and fault tolerance management in distributed systems.
• Designed and developed UI components including Switch, Customer Virtual Port, Advanced Search, and Global Search UI pages using ReactJS.
• Created Spring Integration channels for polling Message Brokers (Kafka).
• Implemented Java/Java 8 service methods adhering to project requirements.
• Employed Spring Validator interface for custom validation.
• Conducted comprehensive unit testing and end-to-end testing using JUnit and Mockito.
• Orchestrated CI/CD pipelines using Jenkins, Docker, and Kubernetes for seamless deployment.

Feb 2019 – Dec 2019 · 10 mos · Bengaluru Area, India

• Project Name: SFC (Ship From Club)
• Environment: ReactJS, Redux, Redux Saga, Material UI, Axios, Java 8, Spring Boot, Spring Data JPA, RESTful Web Services, Microservices, MySQL, Jenkins, Docker, Maven, Jira, GitHub, Azure Service Bus, Azure Telemetry, and other Azure services
• Description:
• Led the development of a microservices-based solution aimed at streamlining operations for Walmart associates, facilitating tasks from product picking to shipping and order tracking. The application is pivotal in managing tasks at Walmart stores, ensuring timely delivery to customers' addresses, and providing comprehensive order tracking functionalities.
• Responsibilities:
• Developed technical designs and documented specifications to guide the development process.
• Implemented the UI for packing and picking microservices using ReactJS, Redux, and Redux Saga, ensuring a seamless user experience.
• Designed and implemented RESTful APIs, developing RestControllers to expose service endpoints for efficient communication.
• Wrote Java/Java 8 code for service methods, ensuring robust functionality and adherence to project standards.
• Utilized Spring Data/JPA for the persistence layer and implemented RESTful web services to facilitate data exchange.
• Implemented validation using JSR 303 API and custom validation techniques to maintain data integrity.
• Conducted unit testing and wrote test cases using JUnit and Mockito to verify the functionality of the application components.
• Oversaw end-to-end testing to ensure comprehensive validation of the application's features and functionalities.
• Managed APIs using Azure API Management and implemented application insights using Azure Telemetry for both frontend and backend components.
• Orchestrated CI/CD pipelines using Jenkins and Docker, facilitating seamless product deployment on the Azure cloud platform.

Jul 2018 – Nov 2018 · 4 mos · NCR - National Capital Region, Philippines

• Project Name: NextGen (NG)
• Environment: ReactJS, Redux, Material UI, Java 8, Spring Boot, Spring Data JPA, RESTful Web Services, Microservices, Spring Cloud, Spring Cloud Sleuth, Spring Cloud Config, Zuul API, Eureka Server, Eureka Client, Zipkin, Logstash, Kibana, AWS, Oracle, Jenkins, Maven, GitHub, Apache Tomcat, Rally
• Description:
• Led development efforts on a Spring Cloud-based microservices architecture project aimed at facilitating flight and hotel bookings, as well as corporate traveler itinerary management. Collaborated with Amadeus for fare retrieval and integration with travel sellers and airlines.
• Responsibilities:
• Spearheaded sprint planning, user story creation, and task management, ensuring alignment with project objectives.
• Actively participated in grooming sessions to refine project requirements.
• Designed and implemented UI components for booking and profile microservices utilizing Material-UI, ReactJS, and Redux.
• Crafted UI test cases leveraging Jest and Enzyme for robust front-end validation.
• Developed service methods in Core Java, maintaining code integrity and adherence to project standards.
• Implemented REST controllers to facilitate seamless communication within the application.
• Conducted end-to-end testing and authored unit tests using JUnit and Mockito to ensure code reliability.

Oct 2016 – Jun 2018 · 1 yr 8 mos · Bengaluru Area, India

• Project Name: RWLPR (Real World Late Phase Research)
• Environment: Java, Spring MVC, Spring ORM, Hibernate, Oracle, JavaScript, jQuery, CSS3, HTML/HTML5, Maven, SVN, Apache Tomcat, Bamboo, Jira, Splunk
• Description:
• Developed a tool for doctors, scientists, and researchers to analyze real-world data combined with primary data collected from physicians and patients, alongside existing secondary data such as electronic medical records (EMRs), insurance claims, or established registries. This integrated approach maximizes scientific insights by leveraging both primary and secondary data sources, streamlining research processes while minimizing burdens on care providers and patients.
• Responsibilities:
• Developed key features of the application, including form handling, controllers, views, and business logic components, following MVC architecture principles.
• Implemented Hibernate framework for data persistence against an Oracle database, particularly for PDF generation functionalities.
• Wrote code for core Java service methods to ensure robust application functionality.
• Collaborated with the SQL team to formulate queries and stored procedures required for application processes.
• Conducted unit testing and smoke testing to validate overall application functionality.
• Acted as an integral part of the team, addressing challenges encountered across different environments (DEV, UAT, PROD).
• Resolved bugs and implemented client-suggested enhancements to improve application performance.
• Managed deployment across various environments using Bamboo.
• Conducted peer code reviews and provided guidance to associate developers.

Aug 2015 – Sep 2016 · 1 yr 1 mo · Bengaluru Area, India · On-site

• Environment: Java, Spring, Spring JDBC, Spring Web Flow, Hibernate, SOAP Web Services, JSP, HTML5, CSS3, JavaScript, Ajax, jQuery, Maven, GitHub, Apache Tomcat, Jira
• Responsibilities:
• Developed user interface (UI) pages utilizing JSP, JavaScript, Ajax, jQuery, CSS3, and HTML5.
• Implemented business logic using Java programming language.
• Created Plain Old Java Objects (POJOs) and Java Beans classes as value objects.
• Designed the persistence layer using Spring JDBC and Hibernate frameworks.
• Conducted code refactoring and wrote unit test cases using Mockito and PowerMockito.
• Achieved code coverage exceeding 90% using Eclemma plugins.
• Addressed bug fixes and implemented enhancements as per business requirements.