Khoa V.

EXECUTIVE SUMMARY • 15+ Years of Experience: Proven track record in architecting, developing, and operating large-scale Enterprise, SaaS, and e-Government solutions powered by the Java ecosystem. • Microservices & Reactive Stack Expertise: Proficient in SAGA, Event Sourcing, CQRS, Event-Driven Architecture, API Gateways, Resilience patterns, Distributed Caching, and Observability. • Technical Leadership & Architecture: Hands-on experience as CTO, Technical Lead, and Solution Architect leading engineering teams, managing business analysis (BA), technical strategy, and writing core production code. • Modern Stack & AI Pioneer: Pioneered Spring AI integrations (OpenAI, Gemini, Anthropic, DeepSeek) and enterprise DevOps with CI/CD, Kubernetes, and Argo Rollouts. • Open Source Community Impact: Led and core-developed OpenCPS, a national open-source government project funded by NATIF and recognized by VFOSSA. TECHNICAL SKILLS • Architecture & Patterns: Microservices Architecture, Event-Driven Architecture, CQRS, SAGA Pattern, Domain-Driven Design (DDD), Ports and Adapters, API Gateway Pattern, Reactive Programming. • Java & Backend Stack: Java (8 - 21), Spring Boot 3, Spring AI, Spring Cloud, Spring WebFlux (Reactive), Spring Security (OAuth2/JWT/Keycloak), Hibernate/JPA, Struts, Liferay. • Messaging & Data/Caching: Apache Kafka, Kafka Streams, Reactor Kafka, Redis (Rate Limiting/Caching), Caffeine (L1 Cache), PostgreSQL, MongoDB. • AI & System Integration: Spring AI (OpenAI, Anthropic, Gemini, DeepSeek), AWS Services (S3, SES, Rekognition FaceID). • Frontend & Mobile: ReactJS, Next.js, React Native, TypeScript, Tailwind CSS, DaisyUI, State Management & Modern UI Kits. • DevOps, Infrastructure & Observability: Docker, Kubernetes (K8s), Argo Rollouts, GitHub Actions (CI/CD), Nginx, OpenTelemetry, Zipkin, Micrometer, Resilience4j, SonarQube, GitHub Copilot.