Jan 2024 - current

Back-end

• Implemented end-to-end CI/CD pipelines with Gitlab and Kubernetes, automating deployments from code commit to production with a custom log manager API.
• Used Grafana and Argo to monitor logs, track system performance, and test APIs for quick issue resolution in production.
• Developed a bus application with over 180,000 users accessing 100+ routes. Implemented data collection and reporting features using Node.js to gather user statistics, route usage, and performance metrics to optimize system performance and improve user experience.
• Developed and designed APIs for reporting and visualizing data in real-time with Redis and RabbitMQ.
• Implemented comprehensive internationalization i18n support for English and Vietnamese languages, enhancing the application's global reach and user accessibility .
• Implemented secure authentication using JWT for login, registration, token verification, and refresh mechanisms. Ensured secure data transmission by encrypting and decrypting sensitive data using AES in multiple modes (AES-GCM for authentication, AES with PKCS7 padding), maintaining confidentiality and integrity during transmission and storage.
• Optimized database performance with indexes, partitioning, and indexing strategies to handle over 2 million records. Prevented SQL injection through prepared statements, parameterized queries, and input validation.
• Designed and integrated microservices architecture, enabling efficient management and scaling of multiple services, including both RESTful APIs and GraphQL, enhancing overall system modularity and maintainability

Technologies :

Nodejs, Go, Gitlab, K8s, Redis, Nginx, Argo, grafana, Docker, ClickHouse, Mongodb, Postgresql, Postman

Do at Phenikaa MaaS

Phenikaa MaaS Coroperate - Developed and implemented a payment system for buses and metro subways, enabling contactless transactions using Visa, MasterCard, NAPAS, and mobile wallets, enhancing passenger convenience. I have been involved in key projects such as: : Rain and Flood Map of Da Nang, App Busmap , Vinbus

Jan 2024 - current

Front-end

• Created responsive user interfaces using Tailwind CSS, Bootstrap, Framer Motion, and Material UI, focusing on optimized layouts and enhanced user experience.
• Developed and maintained scalable web applications using ReactJs
• Integrated chatbox API with WebSocket/RESTful for real-time communication. Used lazy loading, message buffering, and async rendering to prevent lag, and optimized backend with caching for fast responses
• Integrated RESTful APIs to fetch and display data from the backend, improving user experience.
• Implemented unit testing and end-to-end testing for application stability using React Testing Library
• Managed application state using Redux and Context API.

Technologies :

React, Redux, React Testing Library, Gitlab, Docker, Postman, Tailwind CSS, Bootstrap, Framer Motion, Material UI

Do at Vieon

VieON is Vietnam’s most advanced Over-The-Top (OTT) platform provided by DatVietVAC Group Holdings. Aside from providing access to more than 100 traditional TV channels, VieON boasts over 100,000 hours of copyrighted content, including movies, dramas, game shows and variety shows both local and abroad. I have been involved in key projects such as: : Vieon