Thai Ngoc Quyen
Java Back-end Developer
Personal Gallery
Coding at my workspace
About Me
Professional Summary
As a dedicated Java Back-end Developer, I specialize in building robust, scalable systems using modern technologies and best practices. My experience spans from microservices architecture to full-stack development, with a strong focus on clean code and efficient solutions.
Education
Languages
Work Experience
Back-end Developer
Designed and implemented core backend services: Evidence, Support, and Incident management systems using Spring Boot and PostgreSQL
Built micro-service communication with Kafka (event-driven) and gRPC
Used Clean Code for REST full service calls across microservices
Created micro-service authentication using JWT (with RSA encryption) and APIs
Collaborated in an Agile Scrum team, participating in daily standups and sprint reviews
Managed version control with Git, handled API requests and resolved code conflicts
Successfully completed internship with an 'Excellent' performance review
Technical Skills
Programming Languages
Enterprise applications, Spring ecosystem
System programming, algorithms
Full-stack development, Node.js
Type-safe frontend development
Frameworks & Libraries
Microservices, REST APIs, Security
Modern UI development, hooks
Backend services, Express.js
Web applications, MVC architecture
Databases & Storage engines
Advanced queries, optimization
Database design, indexing
NoSQL, document databases
Caching, session management
Tools & Platforms
Containerization, orchestration
Version control, collaboration
Event streaming, messaging
Cloud services, deployment
Featured Projects
A full-stack AI-powered language learning application with real-time interaction, advanced progress tracking, and gamification features.
Key Highlights:
Designed and implemented a scalable monolithic backend with modular architecture
Integrated AI-driven speech and text analysis using FastAPI + Whisper Transformer + OpenAI
Built secure JWT-based authentication with access/refresh tokens, revocation, and role-permission system
Implemented Redis caching layer to optimize performance and reduce database load
A sophisticated healthcare management platform built with microservices architecture, focusing on patient data security, appointment scheduling, and medical record management.
Key Highlights:
Developed secure patient management system with HIPAA compliance standards
Implemented advanced appointment scheduling algorithm with conflict resolution
Built comprehensive medical history tracking with audit trails
Created RESTful APIs with OpenAPI documentation using Swagger
A comprehensive full-stack restaurant management system built with modern microservices architecture, featuring real-time order processing, inventory management, and customer engagement tools.
Key Highlights:
Architected and developed a scalable microservices ecosystem with 8+ independent services
Implemented real-time order processing using Apache Kafka for event streaming
Built RESTful APIs and gRPC services for inter-service communication
Designed responsive React frontend with real-time updates using WebSocket connections
A desktop application built with Java Swing following the MVC architecture. The system supports full CRUD operations for employees, salary calculation, and data import/export from Excel files.
Key Highlights:
Add, update, delete, search employees
Calculate monthly salary
Import/export from Excel
Uses MySQL database
A machine learning project to classify emails as spam or non-spam using text mining techniques in WEKA. Evaluates C4.5 (J48) and Naive Bayes on 5,180 emails.
Key Highlights:
98% accuracy with full dataset
Evaluated with percentage splits
Text preprocessing to ARFF
Competitive results across algorithms
A modern shop management platform built with Spring Boot for managing employees, customers, inventory, invoicing, analytics, and support.
Key Highlights:
Employee & role management
Inventory & product management
Analytics & reports
Customer support chatbox
Get In Touch
Contact Information
Connect With Me
Let's Work Together
I'm actively seeking opportunities to contribute to innovative projects and grow as a backend developer. Whether you have a project in mind or just want to connect, I'd love to hear from you!