Open to opportunities

Nguyễn Ngọc Hải

@nguynngchi

Message

Fullstack web developer delivering scalable, secure customer portals and integrations.

Vietnam

Message

What I'm looking for

I seek a role building scalable, secure fullstack systems with strong engineering practices, opportunity to mentor, and projects integrating AI and microservices.

I am a Fullstack Web Developer with five years building and maintaining a global customer and admin portal in the secure IT asset disposal and hardware recycling industry, plus many prior years in government software roles. I deliver end-to-end features across frontend, backend, and databases, and I’ve implemented complex business logic including web forms, QR scanning, file processing, APIs, charts, and reporting.

I design and implement microservices and monolithic systems using REST/gRPC, RabbitMQ/Kafka, and WebSocket/Socket.IO, and I focus on performance through indexing, caching, parallel API calls and data prefetching. I built an AI chatbot with RAG for a customer-facing knowledge base that lets authenticated users query live system data and replaced manual FAQ workflows.

I work with React/Next.js, TypeScript, Node.js, Java (Spring Boot), PostgreSQL, DynamoDB, MongoDB, Docker, Kubernetes and AWS services; I practice Clean Architecture, SOLID principles, TDD, and collaborate in Agile/Scrum environments while mentoring juniors and participating in code reviews to improve maintainability and reliability.

Experience

Work history, roles, and key accomplishments

Current

Fullstack Web Developer

Current

VietSoftware International

Nov 2021 - Present (3 years 11 months)

Developed and maintained a large-scale customer and admin portal for secure IT asset disposal serving thousands of global users; implemented end-to-end features, optimized frontend performance, and designed REST/gRPC services. Led AI/LLM integration by building a RAG-based chatbot and improved system reliability through API validation, logging, and modular architecture.

React TypeScript Redux NestJS PostgreSQL DynamoDB RabbitMQ Kafka Docker

Deputy Head, Software Development

Customs Department of IT & Statistics

Oct 2016 - Sep 2021 (4 years 11 months)

Led a team of four engineers to maintain and operate Vietnam Customs' core software systems, coordinated with partners to ensure reliable customs clearance, and improved system performance to support nationwide operations.

Team Leadership Performance Optimization Support Java SQL Deployment Monitoring

Software Development Officer

Customs Department of IT & Statistics

Jan 2008 - Oct 2016 (8 years 9 months)

Developed, deployed, and maintained key customs applications and provided training and technical support to staff across Vietnam Customs to ensure system availability and regulatory compliance.