Hi, I'm
Bao Trong
3+ years building scalable web systems with NestJS, Node.js & TypeScript. Expert in RESTful APIs, PostgreSQL optimization, Docker CI/CD, and event-driven architectures.
About Me
I'm a Fullstack Developer passionate about building scalable, high-performance web systems using modern technologies.
With strong expertise in NestJS, Node.js, and TypeScript, I specialize in RESTful API design, database optimization using PostgreSQL and Redis, and Docker-based CI/CD pipelines.
Experienced in high-volume data processing, object storage with MinIO/S3-compatible services, and event-driven or real-time systems. Comfortable working in Agile/Scrum environments and collaborating with cross-functional, cross-border teams.
Skills & Technologies
The tools and technologies I use to bring ideas to life
Frontend Development
Building responsive and performant user interfaces
Backend Development
Designing scalable server-side applications
Databases
Database design, optimization, and caching
DevOps & Cloud
Deploying and managing cloud infrastructure
Technologies I Work With
Experience
My professional journey and the impact I've made
Fullstack Developer
VEXERE
Designing and developing scalable full-stack applications using React.js, React Native, Node.js (NestJS, Express) with TypeScript, following Domain-Driven Design (DDD) and clean architecture.
- Built microservice-ready systems with event-driven architecture using Kafka/RabbitMQ
- Optimized high-concurrency services handling 100K+ concurrent users, improving API response by 30%+
- Designed PostgreSQL/MSSQL databases with Elasticsearch for fast large-scale querying
- Containerized services with Docker, deployed on Kubernetes with CI/CD pipelines
Fullstack Developer
Vitech Group
Building enterprise CRM/HRM systems and cross-platform marketing automation software using Electron. Specialized in third-party API integrations for social platforms and marketing tools.
- Developed comprehensive CRM system with customer management, sales pipeline, and analytics
- Built HRM platform handling employee records, attendance, payroll, and performance tracking
- Created cross-platform Electron marketing apps for Facebook, Zalo, TikTok automation with multi-account management
- Integrated 10+ third-party APIs including social platforms, SMS, email, and marketing automation tools
Fullstack Developer
Hecatech Vietnam
Developed scalable internal platforms using NestJS (Modular Monolith + Microservice-ready structure) and Next.js, applying Domain-Driven Design (DDD) principles.
- Increased data collection throughput by 300% (from 10k to 40k records/day)
- Cut down manual data entry time by ~20 hours/week through automation
- Reduced API response time by 30% via Redis caching and query optimization
- Integrated MinIO (S3-compatible) for secure object storage with multipart uploads
Fullstack Developer
Hanoi National University of Education
Designed and developed custom software solutions for academic administration using Flutter (Mobile) and React (Web). Built robust backends with PostgreSQL.
- Delivered scalable e-learning systems aligned with Ministry of Education standards
- Improved system accessibility and learning efficiency for faculty and students
- Provided technical documentation and support to partner institutions
- Utilized Docker for application portability and consistent performance
Fullstack Developer
Thuy Loi University
Developed a comprehensive event attendance MiniApp integrated into the Zalo ecosystem using React, TypeScript, and ZMP SDK.
- Implemented Websockets handling 500+ concurrent connections with sub-100ms latency
- Led a team of 5 developers, managing source code via Git
- Translated Figma prototypes into pixel-perfect, responsive UI
- Ensured zero downtime during university-wide events
Software Developer
Freelance
Working with various clients from Japan, Singapore, Vietnam across E-commerce, Logistics, and Healthcare industries.
- Optimized PostgreSQL/MSSQL handling 1M+ records, reducing query time by 40%
- Designed secure RESTful and GraphQL APIs with Payment Gateway integration
- Implemented Docker containerization and CI/CD pipelines
- Wrote end-to-end tests for key user workflows across services
Projects
A selection of projects that showcase my skills and experience
CloudScale Platform
Enterprise-grade SaaS platform for cloud resource management with real-time monitoring and cost optimization.
DevFlow
Developer productivity tool for managing workflows, tracking time, and automating repetitive tasks.
HealthTrack Mobile
Cross-platform mobile app for health tracking with AI-powered insights and wearable device integration.
E-Commerce Engine
Headless e-commerce solution with multi-tenant support, inventory management, and payment processing.
Real-time Analytics
Dashboard for real-time data visualization with customizable widgets and automated reporting.
Why Work With Me
The qualities and principles that define my work
Problem Solver
I approach every challenge with analytical thinking and creative solutions. Complex problems are just puzzles waiting to be solved.
Scalable Systems
Building systems that grow with your business. From startup MVP to enterprise scale, I design for the long term.
Clean Code
Maintainable, testable, and well-documented code. Because software should be a joy to work with, not a burden.
Performance First
Fast load times, optimized queries, and security-first development. Your users and data deserve the best.
Team Player
Clear communication, knowledge sharing, and mentorship. Great software is built by great teams working together.
Ship & Iterate
Shipping quality software on time. I balance perfectionism with pragmatism to deliver real value.
What People Say
Feedback from colleagues and clients I've had the pleasure of working with
“Trong is one of the most talented developers I've collaborated with. His ability to architect complex systems while maintaining clean, readable code is exceptional. He consistently delivers high-quality solutions.”
“Trong was instrumental in building our platform infrastructure and scaling it as we grew. His technical expertise combined with business understanding made him an invaluable team member.”
“Working with Trong was a wonderful experience. He not only delivered quality code but also contributed great ideas to improve our services. His attention to detail and commitment to quality is impressive.”
Let's Build Something Together
Have a project in mind or want to discuss opportunities? I'm always open to interesting conversations and new challenges.
I'm open to new opportunities and interesting projects. Let's talk!