Developed the backend service mainly with Spring Boot and involved in developing microservice architecture with various Spring Cloud software, especially using Eureka, OpenFeign, Ribbon, Hydrix, Spring Cloud GateWay, Spring Cloud Bus/Stream, Spring for Apache Kafka and Spring Cloud Config.

Followed Agile development methodology to develop a part of the website step by step using React.js as front-end framework, Spring Boot as back-end framework, and MySQL as Database Management System.Participated in analyzing the requirements of the system and designed part of the database.Utilized Amazon RDS to set up, manipulate and scale MySQL development.Utilized Spring JPA as the ORM and persisted POJO instances from application level towards the database.Used Hibernate methods to manipulate data and communicate with the database.Built services based on Spring JPA to implement all the CRUD operations and develop Restful APIs in controllers using Spring annotations.Secured Spring Boot Restful APIs with JSON Web Tokens (JWTs) to authenticate users on application without saving personal information in cookies or other session data.Experienced in using Mockito and Junit to perform testing for back-end.Utilized AWS EC2 instances to provide workloads and resources balance, also for high availability.Used React Router to redirect components and Router Guard to manage accessibility for each part.Used state, props and component lifecycle hooks to manipulate the rendering of the component such as constructor, componentDidMount etc.Used Redux to get the global state and used Redux-thunk to deal with asynchronous codes.Applied Axios library to implement Http request and configured to get the data from back-end.Utilized Material UI and Primer React to improve user experience with the front-end.Utilized AWS S3 for front-end part.

Followed Agile development methodology to develop a Single Page Application (SPA) step by step: using React.js as front-end framework, Spring Boot as back-end framework, and MySQL as Database Management System.Utilized Spring JPA as the ORM and persisted POJO instances from application level towards the database.Built services based on Spring JPA to implement all the CRUD operations and developed Restful APIs in controllers using Spring annotations.Secured Spring Boot Restful APIs with JSON Web Tokens (JWTs) to authenticate users on application without saving personal information in cookies or other session data.Used React Router to redirect components and Router Guard to manage accessibility for each part.Utilized webpack which provides plugging and loaders for React build.Used React Lifecycle hooks, state, and props to implement the component.Used JSX, HTML, and CSS to render the components.