Ho Chi Minh City, Vietnam
Software Engineer with 5+ years of experience delivering new features, improving performance, and maintaining production systems across B2B commerce, healthcare, fintech, travel, and cybersecurity. I specialize in APIs, microservices, event-driven architecture, and database performance, working primarily with TypeScript, NestJS, Python, Django, PostgreSQL, Kafka, and AWS. I enjoy solving reliability, scalability, and performance challenges in complex systems.
• Built shared foundations for NestJS microservices, including gRPC communication, database access, error handling, and observability. • Designed authentication, RBAC, audit logging, and reliable Kafka event delivery using transactional outbox and Debezium CDC. • Built event-driven notification, translation, and product-listing workflows with optimistic locking and version history. • Contributed to Temporal-based order orchestration and VNPay payment workflows.
• Maintained a production telehealth platform covering patient records, appointments, laboratory workflows, and payments. • Optimized PostgreSQL queries and schemas to improve API performance and production stability. • Built multi-tenant SaaS foundations with tenant provisioning, RBAC, and isolated configuration. • Designed event-driven DNA-processing workflows with retries, failure tracking, and auditability.
• Developed new features and maintained production systems across fintech, travel, cybersecurity, and consumer products using Django, NestJS, React, and AWS. • Reduced page load times from 23s to 2s and from 26s to 5s through SQL and schema optimization. • Developed eKYC workflows and upgraded a production application from Django 2 to Django 4. • Built cloud background workloads, serverless APIs, AI chat experiences, and GraphQL integrations.