Project: Camera AI Portal • Description: The project’s goal is to deliver a web application that visualizes customer traffic for store owners and employees.• Technologies: RESTful APIs are implemented using Quarkus, Jakarta WebSocket, MinIO for object storage, Redis pub/sub message, and PostgreSQL for the database.• Main responsibilities: integrate with SSO with internal IAM Service, build Chat Service with WebSocket and Redis pub/sub for distributed system Project: Incident Management (IM).• Description: IM is a recording system that supports the handling of incidents occurring during operations.• Technologies: REST APIs, based on the Play Scala Framework, Akka Actors for concurrency and distribution, Redis for message queuing, and PostgreSQL for the database.• Main responsibilities: build actors for feature auto resolve ticket base on real-time logs monitoring, ticket management in web appProject: Customer Service API• Description: continuously operate and develop an API that provides data for an optimized customer care system, achieving 30% efficiency• Technologies: based on the Play Scala Framework with REST APIs and PostgreSQL for the database.

• Refactored the real-time tracking project report status from Java EE to Spring Boot and wrote test coverage > 80% with JUnit and Mockito.• Migrated an E-learning app from PHP (Laravel MVC) to Spring Boot and developed feature video streaming using FFmpeg• Implemented notifications with Firebase Cloud Messaging (FCM) for managing students' homework.

Project: Railinc Asset Util• Description:The project involves migrating from Spring MVC to Spring Boot.• Re-Build modules, services and views.• Optimizes fixes bugs and writes unit test with jUnit, EasyMock.• Technologies: Microservices based on Java with Message Queue, Spring Boot, Spring MVC, Apache Camel, Drools, PostgreSQL.