Nguyễn Nhật Nguyên

Work Experience

Digital platform for customer onboarding · 12/2024 - Present

Stack: Go, Java (Spring Boot/Quarkus), SQL, BPM

• Built customer onboarding microservices for a major Vietnamese bank and delivered P99 < 1s at 1000 CCU by optimizing critical paths, queries, and network calls.
• Prepared services for production compliance (OWASP top 10, pen-test, code audit) and release readiness.
• Designed BPM workflows to automate complex business decisions and approvals.
• Applied DDD-aligned service boundaries and reusable patterns to keep domains clear and maintainable.
• Implemented read-replica and cache-aside strategies to reduce read load and improve reliability under peak traffic.
• Profiled latency hotspots across service and database layers to remove performance bottlenecks.

Financial data services · 06/2024 - 12/2024

Stack: ReactJS, Go, AWS Lambda, DynamoDB, Step Functions, MySQL

• Implemented efficient query APIs for large dataset (4 mil. records).
• Built ingestion and processing pipelines for company health and risk signals, plus automated daily report distribution via email.
• Shipped full-stack features with React and Go, integrating AWS services with cost and performance constraints.
• Query optimization for MySQL and DynamoDB databases to improve data retrieval times.

Technical Expertise

• Programming in: Go, Java 21+ (Spring Boot, Quarkus), JavaScript (ES6+), TypeScript.
• Designing and building backend systems: RESTful APIs, gRPC, microservices, event-driven systems (Kafka, NATS), NodeJS.
• Cloud/DevOps: AWS (Lambda, DynamoDB), GKE, EKS.
• Databases: PostgreSQL, MySQL, DynamoDB.
• Languages: Vietnamese (native), English (IELTS 7.5, professional working proficiency).

Open Source Works

• DurableFuture — A lightweight workflow engine in Go for building long-running, resilient applications.
• chronicle — A Go event-sourcing framework (community project; not my repository).

Education