— — Featured Work

Case Studies & Engineering Work

Production systems Quach Hoang Anh (Hayes) has designed and shipped — problem, architecture, technology choices and measured impact for cash-handling telemetry, airline ticketing and real-time auction platforms.

GLORY SOFTWARE · CASH HANDLING

UBIQULAR Inform

Operator telemetry for a fleet of cash-handling machines: MQTT ingestion into Kafka, NestJS consumers, PostgreSQL read models — and a 30–50% cut in API response time.

  • NestJS
  • Kafka
  • MQTT
  • PostgreSQL
  • Redis
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AIRDATA · AIRLINE TICKETING

Agency & retail ticket platform

Agency and retail ticketing on Vietnam's leading airline platform: legacy SOAP wrapped in typed services, Keycloak as one identity layer, LangChain cutting 25% of manual agent time.

  • NodeJS
  • VueJS
  • Keycloak
  • ELK Stack
  • LangChain
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AIARACORP · KOREAN MARKET

TIMART live auction

A real-time, map-driven commerce auction for the Korean market: Next.js and Redux holding contended bid state, Agora chat and FCM push, shipped on a rollback-safe AWS ECR pipeline.

  • NextJS
  • TypeScript
  • Redux
  • Agora
  • FCM
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