Khoa Nguyen

Led the development of an enterprise-scale AI-powered payment processing system - Architected & implemented a multi-tenant SaaS platform for AI services - Designed & deployed PCI DSS-compliant payment processing infrastructure - Implemented distributed CQRS architecture leveraging Domain-Driven Design principles - Reduced cloud infrastructure costs by 30% through optimized service communication patterns - Led the implementation of automated invoice processing pipeline using TensorFlow

Architect, Business Development Manager, Bridge Engineer, Project Manager/Delivery Specialist - Coordinated with famous clients: Titan groups, Kube, Rakuten Media, Automotive, TheFastDex, LocalServices, Quincus, Yokogawa, Billgo, Arcstone... - Optimized infrastructure for various clients. - Built MVP products for various clients to help them present their business ideas to investors. - Helped clients migrate from legacy systems to cloud or hybrid solutions. - Researched the latest AI & ML techniques.

Spearheaded development of enterprise IoT & access control systems - Architect, Designed & implemented real-time IoT device management system supporting 100,000+ concurrent connections - Led team of 30 developers - Reduced deployment time by 60% through implementation of IaC - Intranet systems for smart CCTV cameras that leverage standard cameras enhanced with intelligent analytics to detect anomalous actions & human behavior. - Intranet-based smart access control systems via CCTV cameras.

Led development of healthcare SaaS platform - Implemented HIPAA-compliant video conferencing system supporting 50+ concurrent users in single room - Designed & implemented secure payment gateway integration - Developed real-time data synchronization system for medical records - Reduced system response time by 50% through optimization of database queries

Led architecture & development of large-scale live streaming platform - Designed microservices architecture handling 200,000 concurrent users per second with single pool of x10 m4.xlarge intances, included db cluster. - Implemented AI-powered influencer ranking system - Reduced infrastructure costs by 40% through optimized - Delivered custom streaming solutions for enterprise clients including Rakuten, Grab, Samsung - Led team of 60 developers which scale from 10 to 60 persons in just 2 years.

Develop & improve a multi-tenant SaaS HR platform using .NET Core 5 & Angular TypeScript. - Built & publish mobile apps using React Native, Swift, Kotlin, AI - Improving platform accessibility for distributed teams - Managed Azure cloud infrastructure & SQL database administration, ensuring 99.9% system uptime - Led troubleshooting efforts for production issues while maintaining code quality through comprehensive unit testing. - Research latest AI & ML techniques.

Developed & improved a multi-tenant SaaS insurance system. - Built & developed the entire distributed system for insurance. - Built & developed an automation system that enables the QA team to easily define actions & expected outcomes for all test cases, regardless of their automation testing knowledge.

Developed & improved a multi-tenant SaaS platform for healthcare & gambling. - Built & published mobile apps for real-time betting, gambling, poker using Swift, Kotlin, AI, WebRTC, Websocket. - Built & developed a web application for a SaaS healthcare management system. - Led troubleshooting efforts for production issues while maintaining code quality. - Tech Stack: .NET, Angular, Python, AI/ML, TensorFlow, Microservices, Kotlin, Swift, MSSQL, MongoDB, Redis, OAuth2, Websocket