Backend-focused full-stack engineer · Hanoi
I build reliable systems from API to cloud.
Software engineer specializing in TypeScript, Node.js, distributed commerce systems, real-time applications, and infrastructure that survives real users.
01 / SELECTED WORKFEATURED CASE STUDY
NJINET / GRAPH WORKSPACE COLLABORATIVE MODE
Can you map this system flow?
U
UserAccess updated. The workspace is ready.
A
AdminI found the dependencies. Adding them now.
AI
AI Agent01
Making graph physics collaborative.
Heavy d3-force computations move through BullMQ workers, then flow back to every connected client through Socket.IO and Redis—keeping the interface responsive as the graph changes in real time.
- Realtime Socket.IO broadcasts with Redis adapter
- Platform NestJS monorepo with shared infrastructure
- AI Python agent built with LangGraph and MCP
- Cloud AWS provisioned with Terraform and GitHub Actions
NestJSReactSocket.IOBullMQRedisPostgreSQLLangGraphAWSTerraform
02 / EXPERIENCE2021 — 2026
Systems built for
the messy real world.
Commerce, operations, and infrastructure—built around how teams and customers actually work.
NAILZY
Backend Developer
Multi-tenant US nail-product e-commerceBuilt and operated the backend behind a multi-tenant commerce platform for nail products in the US.
- Developed NestJS and Express microservices using CQRS and AWS SQS for asynchronous messaging.
- Built the Algolia search layer end to end: real-time product sync, recommendations, and personalized ranking.
- Improved cart, checkout, coupon, and promotion flows; delivered a coin and rewards feature.
- Integrated Stripe, OneSignal, SendGrid, and Firebase Auth while maintaining the RBAC permission system.
- Reviewed code and maintained 100% test coverage with Jest.
TypeScriptNode.jsNestJSExpressREST APIsCQRSMongoDBMikroORMMongooseAlgoliaBullMQAWSRedisDatadogJestDockerCursorClaude
TELIO
Software Engineer
B2B FMCG commerce and distributionConnected warehouse, delivery, finance, and search across Vietnam's largest B2B FMCG commerce platform.
- Built inventory orders, batch sending, shipment grouping, and merchant and warehouse configuration.
- Developed DMS features for GPS auditing, Google Geo integration, shipper-task tracking, and location approval.
- Integrated FAST ERP through Kafka to synchronize purchase orders, transfer orders, and master data.
- Built real-time Elasticsearch search using Logstash, KSQL, and Monstache CDC.
- Standardized Kafka dead-letter queues, alerting, Keycloak JWT auth, and health checks across 6+ services.
- Contributed to Kubernetes GitOps deployments, GraphQL Federation, and Snyk scanning in CI/CD.
TypeScriptNode.jsNestJSExpressGraphQLREST APIsPostgreSQLMongoDBKafkaDebeziumElasticsearchLogstashAWSKubernetesDockerRedis
HORUSOFTACEAE
Frontend Intern
Platform development and IT consultingWorked on a hospital organ-donation management application as part of a frontend intern team.
- Built frontend workflows for the organ-donation management application.
- Led the frontend intern team and assigned tasks to team members.
- Practiced iterative software delivery using Agile methods.
JavaScriptReactReduxNode.jsAnt Design
03 / ENGINEERING RANGEBACKEND FIRST · END TO END
01Commerce
Cart, checkout, promotions, payments, warehouse, and order flows shaped by real operational constraints.
02Distributed systems
Kafka, SQS, CQRS, BullMQ, CDC, and dead-letter queues that keep services moving when dependencies fail.
03Search & realtime
Algolia, Elasticsearch, Socket.IO, and Redis for interfaces that respond while the underlying data changes.
04Delivery & operations
AWS, Kubernetes, Docker, Terraform, CI/CD, and Datadog carrying products from commit to production.
About / Quan Le
HANOI, VIETNAM
UTC +7I like complicated operational problems.
I turn them into systems that are observable, maintainable, and useful to real teams. I work mainly on backend architecture, but I am comfortable carrying a product through frontend integration and deployment.
- Languages
- Vietnamese · English TOEIC 895