Thomas Yu Email and Phone Number

Designed and implemented multiple enterprise-level REST Microservice applications for EC2 group using Spring Boot. Implemented Web application using Angular 8, HTML5, CSS3, TypeScript, Bootstrap and SASS.Implemented Reactive Form, Template-driven Form, Data Binding, Component Communication, Custom Pipe, Router Guards, and multiple Service layers in Angular 8.Implemented the Lazy-Loading feature using Angular to improve the overall responsiveness of the frontend web page.Tested the new features in the frontend using Jasmine and Karma.Implemented the asynchronous design using Observable in Angular 8 to connect the frontend and backend.Involved in the Analysis, Design and implementation using [AGILE] methodology for iterative development of the application. Participated in Scrum, Retrospective and Release Planning Meetings.Created AWS Code Pipeline by building the app on AWS Code Build, deployed & maintained by Elastic Beanstalk. Improved the efficiency of the application pipeline performance by 70%.Developed application using Spring, Hibernate, Web Services (RESTFUL).Worked on Spring Controllers and configured using annotations to handle the presentation requests and integrated with services and DAO using annotation.Involved in Design and Development using OOAD methodology to capture and model business requirements, developing multi-threaded high-performance applications server-side workflow.Implemented Multithreading, Concurrency, Exception Handling, and Collections as necessary.Involved in scrum and sprint planning meeting to discuss user stories with concept owners and subject matter experts.Implemented OAuth 2.0 authorization framework to get access to a protected resource on behalf of a resource owner (usually an end user).Developed expertise in optimizing application performance through the effective use of L1 and L2 cache mechanisms, enhancing data retrieval speeds and system efficiency.

The project is to upgrade the stuff management system including time and attendance tracking, scheduling, notification, absence management, compliance and migration from monolith to micro-services.Supervising development cycles and managing business expectations for the project with Agile approach.Developed the whole RESTful API with Spring Boot and Spring MVC framework and did integration to Spring Cloud Microservices into existing system architecture for service registration and discovery.Integrated Shiro and JWT to develop the login system based on the RBAC model, introduced Redis with AOP
and ThreadLocal to handle the token expiration problem.Designed and implemented UI using ReactJS, along with HTML 5, CSS 3, grabhql for the dynamic and static webpage.Configured AWS Lambda with Python in response to triggers data changes and user actions, which is used for real-time serverless data processing system.Wrote SQL queries, used MyBatis to connect to MySQL database for larger data manipulation.Leveraged multi-threads in messaging module to send cached announcement messages to RabbitMQ, applied
MongoDB to store messages to reduce system pressure.Implement Jenkins for CI/DI Agile development, used Git for version control. Involved in Unit & Integration Testing for different Modules in the application.Wrote build & deployment scripts based on Docker and AWS Services like EC2, RDS, DynamoDB, and S3.Supported the application in Production 24X& environment

Led the development of the search engine for ERP to search personalized resources and get recommendations.Worked on designing the tiers of the applications and implementation with J2EE best design practices. Used Spring Boot and Spring MVC as application development framework for RESTful API.Built Oracle database to store large amounts of the data and using Hibernate for back-end development.Designing message streams using OSS, Oracle Adaption of Kafka, for users’ and dev teams’ consumption. Involved in Design and Development using OOAD methodology to capture and model business requirements, developing multi-threaded high-performance applications server-side workflow.Introduced Elasticsearch with analyzer and semantic extension to optimize searching performance, introduced
Logstash and Canal to achieve full indexing and incremental indexing.Collaborating with machine learning group to implementing a Spark application running on Oracle Dataflow to process and validate user input data.Track the entire developing process with JIRA.