Profile I have 4 years of experience in backend development, with a background in Nodejs and knowledge of Reactjs. Work ExperienceGianty (Nest - nextjs) - Jan 2023 - presentTechnology: + Microservices, Docker, GitLab CI/CD, AWS, NestJS, Next.js, PostgreSQL, Sequelize, Redis.NOBINOBI (Store selling Japanese mom and baby)Responsibilities: + Built payment methods including Momo e-wallet, ATM, and credit card; implemented refund processes for failed or canceled orders. + Integrated Tiki Warehouse Management and delivery system; synchronized with Omnichannel Haravan. + Managed the ERP admin system using ReactJS. + Developed a major B2C feature, designed a platform for retail sales, and handled the core system architecture. + Implemented OTP services via SMS and integrated Firebase and Zalo for order status notifications. + Designed and managed microservices, including Pub/Sub communication services, and created database schema structures. + Developed a Bull Queue system to handle background jobs for orders, including retry mechanisms for failed jobs. + Authored technical documentation for API workflows, response data formats, and field mapping.Tinh Vân (Expressjs - Reactjs) - Jan 2022 - Jan 2023Technology: + Linux, Docker, Gitlap, Expressjs, Mongodb, Mongoose, Python.AEON BUDGETOOL (Department Management Aeon mall)Responsibilities: + Generated sales statistics for departments using accounting formulas. + Developed a feature to export data to Excel using Python with multithreading; optimized and improved single-threaded Node.js processes for handling data exports. + Managed and implemented dashboards using ReactJS. + Optimized legacy functions, cleaned up and refactored source code, removed redundant data, and normalized the database for improved performance.SILICON STACK (Nestjs) - Jan 2021 - Jan 2022Technology: + Nestjs, PostgreSQL, Bitbucket, Docker, Prisma.AUTOMUNDO (Buying and selling used cars)Responsibilities: + Developed and maintained a web application using NestJS and TypeScript, with PostgreSQL as the database backend. + Authored project documentation, wrote unit tests using Mocha, and created Swagger API documentation aligned with the codebase. + Built and managed the project following the Agile Scrum model, collaborating with other teams, participating in sprint meetings, managing tickets, and providing daily reports.