👨💻 Professional Summary
Experienced Senior Full-Stack & Mobile Engineer with over 5 years of expertise in developing robust solutions for fintech, health-tech, and consumer electronics. Proficient in TypeScript, React Native, and NestJS, with a demonstrated ability to lead teams and deliver scalable, user-focused applications. Skilled in cloud technologies and modern development methodologies, driving innovation and operational efficiency.
🛠️ Technical Skills
Frontend & Mobile
ReactJSReact NativeExpoExpo RouterReact NavigationWebRTC
Backend
NestJSNode.jsTypeORMExpress/Next.jsGraphQL & RESTWebSockets
Languages
TypeScriptJavaScriptC++C#HTML/CSSSQL
Cloud & DevOps
AWS (EC2, S3, RDS)AzureDockerRedisCI/CDPM2
Databases
PostgreSQLMongoDBMicrosoft SQL ServerMySQL
Tools & Methodologies
GitJiraAgile/ScrumTDD with JestMQTTOpenAI APIs
💼 Professional Experience
- Directed the end-to-end development of William Bills, an AI-driven finance super-app leveraging NestJS, GraphQL, and React Native to empower users with advanced financial management tools.
- Architected a high-throughput transaction-monitoring microservice integrating Envestnet and Basiq, processing over 5M monthly transactions with sub-200ms latency.
- Engineered a secure virtual wallet and transaction processing system in partnership with Zai Payment, enabling seamless in-app financial operations.
- Implemented an OCR-powered data extraction pipeline using Azure Form Recognizer and OpenAI, automating 90% of manual data entry and saving 500+ hours monthly.
- Led migration to Expo SDK 52 and React 18.3, streamlining release workflows and achieving an 80% reduction in release cycle time through daily OTA updates.
- Engineered an IoT touchscreen interface for wellness Pods with React Native and MQTT, deployed across 1,000+ global devices.
- Enhanced app with multi-language support and offline caching, increasing NPS by 18 points.
- Developed video/voice (WebRTC) and SMS features for a call-center SaaS, reducing agent onboarding time by 30%.
- Launched Bio&Me, a nutrition coaching platform on Next.js, NestJS, and AWS, supporting 50K monthly users.
- Guided 4 junior developers, implementing TypeScript standards and testing, lowering bug rates by 25%.
- Crafted C++ and OpenGL shaders for QLED TV features, showcased at CES 2020.
- Developed .NET Core APIs for native graphics libraries, boosting productivity by 25%.
- Created a Spring Boot API for AdWords automation, managing 1M+ daily ad variations.
🎓 Education
B.S. Computer Software Engineering
FPT University, Viet Nam2015 – 2019
🚀 Projects
mcp-rag-server
Maintains a Retrieval Augmented Generation server with FAISS and SQLite.
Crawler4AI-to-markdown
Converts structured AI data to markdown format.
🌐 Languages
EnglishProfessional Working Proficiency 🏆 Certifications
PTE Academic46 (English Proficiency)