Nguyen Dai Long - Backend Developer Portfolio
Hi, my name is
Nguyen Dai Long.
I build scalable backend systems.
Backend Engineer & Backend Lead with 4+ years of experience specializing in Python (Django/DRF), Laravel, and cloud architectures (AWS & GCP). Experienced in building robust systems serving 30,000+ users, real-time messaging, and high-throughput APIs at SOARIG VIETNAM.
01.About Me
Hello! I'm Long, a dedicated Backend Engineer & Backend Lead based in Da Nang, Vietnam. I specialize in designing robust architectures, optimizing databases, and engineering high-availability backend systems serving tens of thousands of active users.
With over 4+ years of professional experience, I evaluate at ITSS Level 3—demonstrating complete autonomy in requirements analysis, complex system design, and leading backend teams to deliver mission-critical enterprise software.
Currently, I serve as Backend Lead / Backend Engineer at SOARIG VIETNAM. I mentor team members, enforce clean code conventions through rigorous code reviews, orchestrate multi-cloud deployments (AWS & GCP), and leverage modern AI tools to continually accelerate development velocity and system quality.
Here are key technologies and platforms I frequently work with:
- ▹Python & Django REST
- ▹PHP & Laravel
- ▹PostgreSQL & MySQL
- ▹Redis & Caching
- ▹AWS & Google Cloud (GCP)
- ▹Docker & CI/CD Pipelines
- ▹WebSocket & Real-time
- ▹RESTful API & System Architecture
02.Where I've Worked
Backend Engineer / Backend Lead @ SOARIG VIETNAM
Oct 2023 - Present
- ▹Lead the backend engineering team: architect database schemas, enforce clean code conventions, and conduct rigorous code reviews to ensure system quality and stability
- ▹Develop scalable backend services and high-throughput RESTful APIs using Django REST Framework (DRF) and PostgreSQL
- ▹Architect and implement real-time communication features utilizing Redis and WebSocket
- ▹Build and maintain automated CI/CD deployment pipelines using Google Cloud Build and Cloud Run with Docker
- ▹Optimize database queries, indexing strategies, and caching layers to elevate system throughput and responsiveness
- ▹Engineer robust notification pipelines handling bulk emails and push notifications for critical system alerts
- ▹Mentor junior team members, streamline onboarding, and integrate AI-assisted coding tools to maximize team velocity
03.Key Projects
Backend Developer, Cloud Deployment
Professional Certification Management & E-Learning Platform
Enterprise e-learning and certification platform with automated course management, video/event completion tracking, and instant digital certificate issuance. Integrated Stripe payment gateway for subscriptions, Redis for background tasks and caching, bulk notifications, and deployed on AWS.
- Django REST Framework
- Next.js
- PostgreSQL
- Redis
- Docker
- AWS
- Stripe Payment
Backend Lead, Backend Developer
Team Management System – Supporting Businesses
Comprehensive enterprise system for corporate team management. Features live messaging via WebSocket, payment processing via Stripe, and point/currency exchange via Dotmoney API. Led the backend engineering team in architectural design, database tuning, and GCP deployment.
- Django REST Framework
- Next.js
- PostgreSQL
- Redis
- Docker
- GCP
- WebSocket
- Stripe
- Dotmoney API
Full-stack Developer
Landing Page Builder via LINE Platform
Full-stack marketing and page builder application enabling businesses to generate customized landing pages integrated directly with the LINE messaging platform. Designed relational database schemas, built REST APIs, and created responsive interfaces using VueJS.
- Laravel
- VueJS
- MySQL
- LINE API
- TailwindCSS
Backend Developer
Electronic Contract Management System
Digital contract platform handling end-to-end electronic document signing, PDF processing pipelines, and compliant audit trails. Engineered memory-optimized document handling, automated CI/CD release pipelines on GCP, and robust role-based access control.
- Django REST Framework
- Next.js
- PostgreSQL
- Docker
- GCP
- Stripe Payment
- OpenAPI
04.Technical Skills
Backend Frameworks
Programming Languages
Databases & Caching
Cloud & Infrastructure
Realtime & Architecture
DevOps & Engineering
Frontend
Honors & Awards
2025
Project of the Year (Team Award)
SOARIG VIETNAM
2024
Outstanding Employee of the Year
SOARIG VIETNAM
ITSS Level 3 Skill Evaluation (Japan Standard)
- ▹Completely autonomous in backend delivery and complex requirements (spec) clarification
- ▹Experienced in mentoring team members and providing proactive technical support
- ▹Demonstrated backend leadership, task breakdown, sprint estimation, and schedule management
- ▹Strict adherence to Clean Code, coding standards, and rigorous code reviews
- ▹Continuous integration of modern AI tools to accelerate development velocity and reduce man-hours
Education
Duy Tan University
Bachelor of Software Engineering
Sep 2018 - Jun 2022
GPA: 3.46 / 4.0
06.My Products & Open Source
A collection of free tools and games I build and maintain outside of work. All products are 100% free to use — no paywalls, no login required.
- 🕹️Popular
NDL Arcade
Free browser arcade games with no download required. Play Snake (5 maps), Tetris (10 difficulty levels), Space Invaders with boss battles, Breakout, and Sudoku. Global leaderboard & mobile-friendly.
- Snake
- Tetris
- Space Invaders
- Breakout
- Sudoku
Visit - 🪙New
Click 2 Top
Fast-paced competitive coin clicker arcade game. Tap coins, dodge bombs, upgrade passive generators, and compete on the global Nations Cup leaderboard. Real-time world rankings by country.
- Clicker
- Nations Cup
- Leaderboard
- Competitive
Visit - 🧩
Little Pathfinder
A charming puzzle game for kids and all ages. Guide your character through challenging mazes and discover the path to the finish. Great for logic training and spatial reasoning.
- Puzzle
- Kids
- Maze
- Pathfinding
Visit - 🔗Free
ShortLink – URL & QR Studio
Production-ready URL shortener with dynamic QR code generation (PNG/SVG), privacy-safe click analytics, password-protected links, custom alias support, and UTM campaign builder. No sign-up required.
- URL Shortener
- QR Code
- Analytics
- UTM Builder
Visit - 🖼️Free
Image Compressor
Client-side image compression tool that runs entirely in your browser — no upload, no server, fully private. Supports JPEG, PNG, WebP. Drag & drop, adjust quality, and download instantly.
- Image
- Compression
- Privacy
- Client-side
Visit - ⬇️
FB Video Downloader
Simple and fast Facebook video downloader. Paste the video URL and get a direct download link in seconds — supports public videos in HD and SD quality. No login required.
- Video
- Downloader
- Free
Visit - 🏦
Lãi Suất Ngân Hàng
Công cụ tra cứu và so sánh lãi suất tiền gửi các ngân hàng Việt Nam theo kỳ hạn. Cập nhật thường xuyên, hỗ trợ tính lãi tự động. Dành cho người gửi tiết kiệm cá nhân và doanh nghiệp.
- Lãi suất
- Ngân hàng
- Tiết kiệm
- Tài chính
Visit
All products are self-funded side projects, built with Next.js & deployed on Vercel.
05. What's Next?
Get In Touch
I'm currently looking for new opportunities and my inbox is always open. Whether you have a question, a project idea, or just want to say hi, I'll try my best to get back to you!