Healthcare AI Platform – USA
Software Architect, Jan 2026 – Present
Project description
- Cloud-native healthcare platform that provides clinical workflow management, AI-assisted decision support, and patient communication tools for healthcare organizations
- Architected multi-layered Azure infrastructure using Pulumi (Go) with 5 stacks: Network, Database, Apps, Frontend, Common across dev, qa, demo, and production environments
- Integrated LLM services, Qdrant vector database for semantic search, and ClickHouse for analytics to power AI-driven clinical features
- Provisioned and managed 50+ Azure resources including Container Apps, SQL Managed Instance, PostgreSQL, Redis, Application Gateway, and Front Door
Responsibilities
- Architected the full cloud infrastructure from VNet topology down to containerized application deployment with Pulumi IaC
- Led cross-team collaboration across 4 service repositories (API, AI, Web, Chat) to deliver end-to-end platform from infrastructure to frontend
- Designed the security and IAM model: OIDC-based federated identity for CI/CD pipelines, managed identity for runtime, subnet-level network isolation, and RBAC governance across all environments
- Established reusable GitHub Actions workflows and container deployment pipelines with health-check validation for zero-downtime deployments across dev, qa, demo, and production environments
Technologies
- Python and C# .NET for backend API and AI microservices
- React and TypeScript for web and chat frontend applications
- Azure Container Apps, Application Gateway, Azure Front Door
- Pulumi (Go) for Infrastructure as Code
- Azure SQL Managed Instance, PostgreSQL Flexible Server, Redis Cache
- Qdrant as vector database for AI semantic search
- ClickHouse for analytics data storage
- GitHub Actions with OIDC authentication for CI/CD automation
Agent Crew – Saigon Technology’s Opensource
Software Architect, Jan 2025 – Present
Project description
- Multi-Agent system supporting multiple model providers with 40% faster solution delivery
- Configurable Agents framework with extensive functionality capabilities reducing implementation time by 35%
- Advanced Memory Retrieval system improving context retention by 87% over baseline systems
- Advanced Agent Collaboration system enabling complex multi-step reasoning
Responsibilities
- Led research into bleeding-edge AI Agent technologies, evaluating 15+ LLM models for optimal performance
- Architected comprehensive framework for Multi-Agent System supporting 8 different LLM providers
- Developed advanced memory system from scratch, achieving 92% context preservation across extended conversations
- Mentored team of 6 developers in implementing AI agent architecture patterns
- Optimized token usage reducing operational costs by 28% while maintaining performance
Technologies
- Python with optimized async processing for concurrent agent operations
- OpenAI and Google Gemini integration with custom fallback mechanisms
- ChromaDB as vector database with custom indexing for 65% faster retrieval
- Advanced text embedding techniques with hybrid similarity search algorithms
Web3 decentralize soccer betting app – USA
Software Architect, Jan 2025 – Present
Project description
- Web3 platform for soccer betting processing 10,000+ daily transactions with zero downtime
- Custom ERC-20 token implementation as internal exchange currency with 25,000+ wallet integrations
- Secure smart contract architecture reducing gas fees by 32% compared to industry standards
Responsibilities
- Designed and implemented smart contracts for ERC-20 token with anti-fraud mechanisms
- Developed secure game logic smart contracts passing 3 independent security audits
- Created web interface with seamless MetaMask integration supporting 5,000+ daily users
- Implemented automated testing suite achieving 98% code coverage for all smart contracts
- Designed token economics model balancing platform sustainability and user incentives
Technologies
- Solidity with advanced security patterns for robust contract implementation
- Ethereum Network with Layer 2 scaling solutions for improved transaction throughput
- Typescript and Hardhat for comprehensive development and testing environment
- React framework with Web3 integration for seamless blockchain interaction
Transportation Management System – Australia
Software Architect, May 2023 – Present
Project description
- Microservices with Event-driven Architecture handling 2M+ daily transactions
- Flexible multi-platform integration connecting 12+ third-party services
- High-volume traffic management with 99.99% system uptime
- Mobile app GPS tracking processing 500,000+ location updates daily
Responsibilities
- Collaborated with Project Manager to define technical requirements and architectural solutions
- Designed scalable microservices architecture reducing system latency by 65%
- Provided technical guidance to Team Lead for resolving complex integration challenges
- Implemented comprehensive code review process improving code quality by 40%
- Designed and managed deployment strategy reducing deployment time from 3 days to 4 hours
- Created disaster recovery plan with 15-minute recovery time objective
Technologies
- Golang optimized for high throughput microservices
- RabbitMQ with custom message patterns for reliable event processing
- Kubernetes with auto-scaling policies maintaining performance during 5x traffic spikes
- Event sourcing architecture with comprehensive audit capabilities
- AWS EKS with multi-zone redundancy for 99.99% availability
Dynamic Reporting System – Hong Kong
Software Architect, June 2021 – Present
Project description
- Enterprise reporting system aggregating data from 8 disparate services
- Real-time data processing pipeline handling 500GB+ daily with sub-minute refresh rates
- Scalable architecture supporting 200+ concurrent users with consistent sub-second response times
Responsibilities
- Designed and implemented stored procedures across multiple database engines reducing query time by 78%
- Optimized complex queries supporting real-time dashboards for executive decision-making
- Developed GraphQL API layer abstracting complexity of underlying data sources
- Created generic integration solution supporting PostgreSQL, MySQL, and MS SQL Server
- Implemented caching strategy reducing database load by 65% during peak usage
Technologies
- GraphQL API with custom resolvers for complex data relationships
- PostgreSQL in AWS RDS with performance-optimized configuration
- NodeJS backend with clustering for optimal multi-core utilization
- Redis caching layer for high-speed data access
- Custom ORM adapters for cross-database compatibility
3D Building Management System – Singapore
Developer, August 2020 – June 2021
Project description
- Working on a team of about 5 members including 1 PM and 4 Developers.
- A web platform for managing infrastructure of buildings.
Responsibilities
- Create a demo for Customers.
- Arrange time and resources for projects with PCs.
- Find solutions for projects.
- Build System Architecture for the project.
- Build Database Structure and Security Hardening.
- Fixing bugs, supporting team members and maintaining.
- Ensure that deliveries are on-time and on-target.
- Get requirements and suggest features for the system.
- Participated in maintaining and developing new requests
Technologies
- ThreeJS, WebGL, and GLSL.
POS System – Australia
Solution Architect, January 2019 – January 2020
Responsibilities
- Azure DevOps and Azure Pipelines for multiple environments.
- Setup Azure Web Service for ASP.NET Web API
- Setup Azure Storage Account for multiple environments.
- Setup MS SQL on Azure Elastic Pool
- Design high availability server with Azure
Technologies
Document management System – Singapore
Go Developer, May 2019 – October 2019
Project description
- The Document Management System (DMS) project was developed to provide a secure, scalable, and efficient platform for managing, storing, and retrieving documents for a client in Singapore. The solution aimed to simplify document storage and retrieval processes, ensuring high availability and secure access control for sensitive data. Designed with a microservices architecture, the system leverages Amazon Web Services (AWS) for storage, distribution, and deployment, providing a robust and cloud-native environment for document management.
Responsibilities
- Design Architecture and Project Structure.
- Setup CloudFront with S3 for Frontend.
- Setup Code Pipeline and Code Build for CI/CD.
- Setup EC2 for Backend Server.
- Setup CloudWatch for monitoring.
- Setup Route53 and VPC Network.
Technologies
- Golang, Gin, AWS S3, AWS CloudFront, AWS EC2.
Furniture Design Platform – Viet Nam
Solution Architect, March 2018 – April 2019
Responsibilities
- Research technical solution and design infrastructure architecture
- Setup Hyperledger Fabric in AWS EC2.
- Setup CloudFront with S3 for Frontend.
- Setup Code Pipeline and Code Build for CI/CD.
- Setup CloudWatch for monitoring.
- Setup Route53 and VPC Network.
Technologies
Online English Learning – Viet Nam
Team Leader, December 2017 – September 2018
Responsibilities
- Create Project’s infrastructure
- Research technical solution and design infrastructure architecture
- Create scalable TURN Server
Technologies
Customer Service System – Viet Nam
Oracle & Backend Developer, December 2014 – September 2018
Project description
- Customer Service for Vietnam Posts and Telecommunications Group.
Responsibilities
- Manage resources in on-premises internal servers
- Manage Oracle Data Server running in Windows server 2008
- Write Business logic in Oracle PL/SQL
- Build a Back-end system with .NET
Technologies
Hospitality Information System – Viet Nam
Developer, March 2013 – March 2014
Responsibilities
- Build development environment and infrastructure
- Manage resources in on-premises internal servers
- Create scripts for automated deployment
Technologies
- Linux Red hat custom build
