Hello, I'm Dat Nguyen
Senior Software Engineer with 7+ years of experience designing and delivering scalable backend systems and enterprise web applications. Passionate about system optimization, clean architecture, and delivering high-reliability solutions.
About Me
I'm a passionate Full-Stack Developer with a strong focus on creating efficient, user-friendly applications. I enjoy solving complex problems and bringing innovative ideas to life.
Who Am I
Senior Software Engineer with 7+ years of experience designing and delivering scalable backend systems and enterprise web applications. Strong expertise in Node.js, Django, microservices architecture, and cloud platforms (AWS, GCP, Azure).
My Approach
Experienced in building business-critical systems across fintech, e-commerce, logistics, loyalty, and HR payroll domains. I focus on system optimization, clean architecture, and delivering high-reliability solutions with measurable business impact.
Education
Thu Dau Mot University, 2016 – 2020
Bachelor's Degree in Software Engineering (GPA: 8.03/10)
Achievements
- Certificate of Excellence (Q1 2023)
- 1st Prize – Creative Startup Contest (2018)
- Top 5 Leaders – National Students Program (2017)
My Mission
To create technology that solves real-world problems and enhances people's lives through intuitive, efficient, and accessible digital experiences.
Technical Skills
Technical Expertise
A comprehensive toolkit that I've refined over years of professional experience, enabling me to architect and build sophisticated, high-performance applications.
Languages
Backend
Frontend
Cloud & DevOps
Database & Messaging
I'm constantly exploring emerging technologies and frameworks to stay at the cutting edge of web development and deliver the most innovative solutions.
Professional Experience
Over 6 years of hands-on experience in software development, focusing on building scalable applications.
Senior Software Developer
May 2025 – Present- Architected a scalable event-driven microservices ecosystem using RabbitMQ, boosting core service efficiency by 50% and ensuring high availability for critical modules (Payroll, T&A, Leave).
- Engineered high-performance data processing pipelines by optimizing complex MySQL queries and implementing Redis caching strategies, significantly reducing latency for large-scale employee datasets.
- Led the modernization of enterprise HR modules (Payroll, Overtime, Payslip), redesigning calculation engines to ensure 100% compliance with tax and labor regulations.
- Developed seamless mobile-backend integrations for attendance verification scanners and WebView applications, enhancing user experience for thousands of employees.
- Orchestrated cloud deployment and monitoring on Microsoft Azure, maintaining 99% uptime and robust system reliability.
Key Projects:
Node.js, Django, Azure, Redis, RabbitMQ, MySQL
Modernized legacy monolith to microservices. Optimized payroll engine for 99% accuracy.
Full-Stack Developer
Feb 2023 – May 2025- Architected and implemented a suite of core microservices including Auth Service, Loyalty Service, Customer Service, and Payment Service using NestJS and AWS, ensuring high scalability and security.
- Engineered an automated Crawler Service for multi-platform social media data (Facebook, Instagram, TikTok, YouTube) using GitHub Actions, significantly improving data collection efficiency.
- Developed a robust Integration Service to unify third-party APIs, payment gateways, and notification systems into a cohesive ecosystem.
- Optimized real-time communication and task processing using RabbitMQ, Redis, and WebSocket microservices for automotive and fintech platforms.
- Built high-performance web applications with Next.js and cross-platform mobile apps with React Native, delivering seamless user experiences.
- Managed cloud infrastructure on Ubuntu Server and AWS, implementing CI/CD pipelines and ensuring 100% services availability.
Key Projects:
NestJS, React Native, AWS, RabbitMQ
Built full-stack e-commerce platform with real-time inventory, notifications, and payment gateways.
NestJS, WebSocket, MongoDB
Developed money transfer API with real-time currency rate updates.
NextJs, MongoDB, ReactJS, AWS
Built a rubber retex cycle system for ThuanLoiRubber company.
Full-Stack Developer
May 2021 – Feb 2023- Developed responsive web applications using ReactJS, Ant Design, Material UI, Redux, and Tailwind CSS.
- Built cross-platform mobile applications for Android and iOS using React Native.
- Designed and implemented scalable backend systems using NodeJS, KoaJS and Socket.io for real-time communication.
- Established CI/CD pipelines on Windows Server using GitHub Actions, ensuring seamless deployment automation.
- Handled API development and integration using C# with MongoDB, optimizing database performance.
- Set up and led Scrum teams using Jira for agile project management.
Key Projects:
ReactJS, React Native, Node.js
Developed container management system web/mobile apps for drivers and employees.
C#.NET, ReactJS, MongoDB
Built CRM system for logistics company to manage customer interactions and sales pipelines.
Node.js, TauriJS, Socket.io
Developed secure internal desktop chat application for enterprise communication.
FullStack Developer
May 2020 – May 2021- Developed a RESTful API for scalable web services using Node.js and Koa.js.
- Implemented Redis for caching and session management, optimizing API response times.
- Designed and documented API endpoints with Swagger for seamless frontend integration.
- Built an administrator management dashboard for an e-commerce platform using Vue.js.
- Integrated RESTful APIs for real-time data updates, enabling features such as user role management and analytics.
Key Projects:
Node.js, Vue.js, Elasticsearch, Docker
Created job matching platform with real-time bidding and chat features.
Node.js, jQuery, MongoDB
Developed server-side logic for online learning platform with payment integration.
Node.js (SSR), ReactJS
Built website for peer-to-peer learning platform focused on user matching and scheduling.
Backend Developer
May 2019 – May 2020- Developed a RESTful API for an e-commerce platform using the PHP Laravel framework.
- Implemented a split-database architecture utilizing MongoDB for unstructured data and MySQL for relational data.
- Integrated Elasticsearch to provide advanced search capabilities for product listings.
- Utilized RabbitMQ for asynchronous messaging and queue management to improve system performance.
- Connected to an external order service to streamline transaction processing.
Key Projects:
Laravel, MongoDB, Elasticsearch
Developed wholesale marketplace connecting buyers and suppliers with advanced search.
Projects
A selection of projects I've worked on throughout my professional career.
LinksOne (HR Platform)
Senior Software Developer
Modernized legacy monolith to microservices. Optimized payroll engine for 99% accuracy.
Liberty Carz (Automotive Marketplace)
Full-Stack Developer
Built full-stack e-commerce platform with real-time inventory, notifications, and payment gateways.
Liberty Exchange (Fintech)
Backend Developer
Developed money transfer API with real-time currency rate updates.
Rubber retex cycle (ThuanLoiRubber)
Full-Stack Developer
Built a rubber retex cycle system for ThuanLoiRubber company.
U&I TMS (Transport Management)
Full-Stack Developer
Developed container management system web/mobile apps for drivers and employees.
U&I CRM (Customer Relationship Management)
Full-Stack Developer
Built CRM system for logistics company to manage customer interactions and sales pipelines.
U&I Chat App
Full-Stack Developer
Developed secure internal desktop chat application for enterprise communication.
OddJob (Freelancer Platform)
FullStack Developer
Created job matching platform with real-time bidding and chat features.
Teach Live (E-Learning)
FullStack Developer
Developed server-side logic for online learning platform with payment integration.
Kalpha (P2P Learning)
FullStack Developer
Built website for peer-to-peer learning platform focused on user matching and scheduling.
thitruongsi.com (B2B E-commerce)
Backend Developer
Developed wholesale marketplace connecting buyers and suppliers with advanced search.
Vitadairy Loyalty System
Backend Developer
Implemented microservices-based loyalty program handling high-volume transactions.
Poslah Singapore
Full-Stack Developer
Built a mobile and website application for Poslah Singapore, a food delivery service by POS system.
Snassy Vending Machine
Full-Stack Developer
Vending machine with Linux or Windows OS.
Contact Me
Feel free to reach out if you want to collaborate or have any questions.
Let's Talk
Whether you have a project idea, job opportunity, or just want to connect, I'd love to hear from you.