Backend Optimization
Oct 12, 2025
Optimizing Driver Matching to Under 5 Seconds
Exploring the integration of KDTree spatial indexing and ThreadPoolExecutor to handle massive concurrency in ride-hailing systems.
Hi, I'm
Phan Nguyen Tra Giang
Software Engineer
I build high-performance systems and integrate AI to solve real-world problems. 236+ GitHub contributions in the last year.
About Me
I am a passionate Fullstack Developer and AI Integrator who graduated from the University of Information Technology (UIT - VNUHCM) with an Excellent GPA of 9.1/10.0.
With over a year of professional experience and two years of deep project development, I specialize in building secure, scalable architectures and bridging the gap between cutting-edge Machine Learning models and robust enterprise applications.
0
Repositories
9.1
UIT GPA
B2
VSTEP Level
const developer = {
name: 'Phan Nguyen Tra Giang',
role: 'Fullstack AI Engineer',
education: 'UIT - VNUHCM',
gpa: 9.1,
skills: ['React', 'FastAPI', 'Llama-3', ...],
passion: () => {
return 'Building scalable AI systems';
}
};
Technical Arsenal
Core Languages
PythonJavaJavaScriptTypeScriptHTMLCSS
Backend & Architecture
FastAPISpring BootFlaskWebSocketRedisCelery
Frontend
Next.jsReactJSReact NativeTailwind CSSFramer Motion
AI & NLP
LLMs (Llama-3)RAG PipelineLangGraphOpenAI WhisperSilero TTSRoBERTa
Database & DevOps
MySQLPostgreSQLMongoDBDockerNginx
Experience
Fullstack Developer
CYBERTECH JSC
05/2025 - 05/2026
- Architected enterprise-grade RAG pipelines using Llama-3 and MongoDB Vector Search.
- Engineered highly concurrent asynchronous backends with FastAPI and Background Tasks.
- Fine-tuned OCR models (Vintern, PaddleOCR) for complex document extraction.
- Deployed low-latency WebSockets for real-time IoT AI Kiosks.
Software Engineering
UIT - VNUHCM
2022 - 03/2026
- Graduated with GPA 9.1/10.0 (Excellent).
- Focused on backend systems, advanced AI applications, and data structures.
- Proactively coordinated team projects, divided tasks effectively, and helped deliver strong outcomes in academic work.
Featured Projects
Backend Optimization
Ride-Hailing Dispatch System
Backend Developer
Matching drivers in < 5 seconds using KDTree and ThreadPoolExecutor.
PythonFastAPIKDTree+2
Pricing Engine
Dynamic Price Calculator
Backend Developer
Dynamic pricing for 10,000 trips in < 3s based on supply/demand.
PythonPandasNumPy+2
Machine Learning
Toxic Comment Classification
Machine Learning Engineer
Fine-tuned RoBERTa achieving 98.97% ROC-AUC with mixed precision.
PyTorchHuggingFace TransformersRoBERTa+2
AI Integration
WordWise AI Ecosystem
Fullstack AI Developer
Multi-Agent Chatbot, AI Pronunciation Scoring, Core Dashboard.
LangGraphLlama-3Whisper+3
Technical Writing
AI Integration
Nov 05, 2025
Architecting Enterprise RAG Pipelines with Llama-3
A deep dive into building scalable Retrieval-Augmented Generation systems using MongoDB Vector Search and open-source LLMs.
Machine Learning
Dec 18, 2025
Mixed Precision Training for NLP Models
How implementing FP16 mixed precision can drastically reduce training time and memory footprint without sacrificing accuracy.
Why Hire Me
I bring a mix of engineering depth, product ownership, and AI integration experience that helps teams move from prototype to dependable delivery.
Product + Engineering
I build systems that are not only functional, but dependable under real usage.
My edge is not just writing code fast. It is understanding the tradeoff between architecture, delivery speed, maintainability, and user value. That is what helps me move comfortably between backend systems, AI features, and full product implementation.
Strength
Backend Architecture
Focus
AI Product Integration
Style
Ownership Mindset
Backend That Scales
I design APIs and system flows with performance, maintainability, and real production constraints in mind.
AI With Product Thinking
I do not just connect models. I shape AI features so they are usable, measurable, and valuable inside real products.
Fast Learner, Strong Owner
I ramp up quickly, take ownership seriously, and keep projects moving without needing constant hand-holding.
Clear Collaboration
I communicate clearly with teammates, translate technical tradeoffs well, and enjoy building alongside others.
Reliable Delivery Mindset
I care about finishing the right thing well, not just pushing code. That means cleaner execution, stronger follow-through, and fewer loose ends.
Cross-Functional Versatility
I can move between backend, AI workflows, and product-facing implementation, which makes me useful in fast-moving teams.
Testimonials
A few words that reflect how I show up as a teammate, collaborator, and builder.
NK
Nguyen Tan Dung
University Teammate
Giang is the kind of teammate who quietly solves the hard parts. She thinks deeply about architecture, moves fast without becoming careless, and always keeps the long-term maintainability of the system in view. Working with her feels reliable because she brings both speed and structure.
Get In Touch
I'm always interested in hearing about new opportunities and interesting projects.
Let's Connect
I'm open to backend, full-stack, and AI integration opportunities. If you have a role, freelance project, or collaboration idea in mind, feel free to reach out.
pntg2903@gmail.com
phan-nguyen-tra-giang
Phone
0941 410 532
Location
Ho Chi Minh City, Vietnam