Open to opportunities

Thaianh User

@thaianhuser

Message

I build resilient payment microservices and scalable backend platforms with Java, Spring Boot, Kafka, and AWS.

Vietnam

Message

What I'm looking for

I'm looking to build scalable, resilient backend and distributed systems, with opportunities to work on cloud infrastructure, event-driven architectures, and production reliability.

At NAB Innovation Centre Vietnam, I build Spring Boot event-driven microservices for merchant payment processing, connecting Merchant Onboarding applications, internal mini-apps, and NAB’s Transaction Lifecycle Management platform through REST APIs and Apache Kafka. I automated ingestion, validation, and payment submission for about 40 merchant accounting files daily, achieving 90% straight-through processing.

I’ve also strengthened ERP backend reliability at AHT Tech JSC and built Kollab’s Express.js APIs, async FastAPI inference services, and optimized MySQL and Redis data layers. I focus on resilient distributed systems, from Kafka retries, DLQs, idempotency, and tracing to Kubernetes, Terraform, cloud security remediation, and FinOps optimization.

Experience

Work history, roles, and key accomplishments

Current

Team Member, Engineer

Current

NAB Innovation Centre Vietnam

Jun 2025 - Present (1 year 3 months)

Designed a Spring Boot event-driven microservice for merchant payment processing, integrating upstream apps and NAB's TLM platform via REST APIs and Kafka. Built resilient Kafka workflows with retries, DLQs, and idempotent processing, achieving 90% straight-through processing for 40 merchant files daily.