• Developed and maintained APIs for an online learning platform (SAPP Platform), supporting student management and learning workflows.
• Integrated EFY e-contract solution to automate student contract signing, linked with HubSpot Deal for seamless contract lifecycle management.
• Implemented payment gateway integrations (VietQR, VNPAY) for student tuition payments, synchronized with HubSpot Deal to ensure accurate transaction tracking.
• Built automation logic for business processes around HubSpot (Ticket, Deal, Contact), fulfilling requests from multiple BU departments to reduce manual effort and minimize data errors.
• Delivered new feature development and system maintenance tasks across SAPP Platform, ensuring stability and scalability for the growing user base.

• Developed mobile applications for a dating platform.
• Used NestJS, PostgreSQL, MongoDB, Redis, Kafka, WebSocket, Elasticsearch, and k6 for Microservices development.
• Built and optimized Microservices features using TypeScript.
• Designed database structures for PostgreSQL and MongoDB.
• Measured and optimized API performance with k6, Redis, and Elasticsearch.
• Reduced system load using Kafka and WebSocket, enhancing real-time processing.

• Developed Telegram mini apps and web applications.
• Used NestJS, MQTT, NATS, RabbitMQ, PostgreSQL, MongoDB, and Redis for Monolithic system development.
• Designed database and built APIs to support new features.
• Wrote scripts for data migration.
• Resolved user feedback, enhancing system reliability and user experience.

Hanoi University of Science, Vietnam National University

Mathematics and Computer Science

09/2021 – 05/2025