Backend Developer / Ho Chi Minh City / UTC+7

BUILT FOR100 MILLIONUSERS.

I'm Hao Nguyen The. I design the invisible half of software — queues, caches and pipelines in NestJS, PostgreSQL, Redis, Elasticsearch— for systems that can't afford to go down. Like a national identity platform for an entire country.

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[01]

Mission Log

Trident Digital Tech // Backend Developer

JUL 2025 → PRESENT · HCMC

RDC — Citizen Management Platform

gov-tech · congo · national scale

Architected NestJS microservices — core APIs, async eKYC workers, cron jobs — designed for 100M+ citizens
Redis + Bloom Filter caching & BullMQ queues: cut DB load, moved OCR/face-recognition off the request cycle
Secure eKYC workflow: Tencent Cloud OCR & Face Recognition, JWT, RBAC, AES encrypted
Elasticsearchfull-text search + PostgreSQL schemas with migrations & full audit trail

Trifood — Food Delivery Platform

e-commerce · high traffic

Order, product & payment APIs on a BullMQ + Redis pipeline — 70%+ coverage via Jest
Product catalog indexed in Elasticsearch for fast full-text search at scale

Tego Global // Software Developer

DEC 2023 → JUN 2025 · HCMC

Pfs — Insurance Data Crawling

automation · scrapy · selenium

Cut collection from ~5 min to <30s/record — 10× faster; API sources in <3s
Scaled to 10,000s records/day across 10 insurance sites
Production infra: NestJS on AWS S3, Cognito, RDS— TypeORM & SQLAlchemy

Perkify + Internal Platform

crm · loyalty · realtime

Loyalty & redemption engine for multi-tenant CRM; optimized MongoDB aggregations
Cron-driven Slack news bot — ~2 hrs/day saved
WebSocket notifications, tree comments, embedding recommendations, Redis caching

[02]

Loadout

Backend

NestJS · Node.js · Next.js

Databases

PostgreSQL · MongoDB · Redis · Elasticsearch

Languages

TypeScript · JavaScript · Python

Messaging

BullMQ · Redis Queues

Cloud

AWS S3 · EC2 · RDS · Cognito

Infra & Testing

Docker · GitHub Actions · Jest

[03]

Credentials

Degree

B.Eng. Software Engineering

HCMUTE — Ho Chi Minh City
Aug 2021 → Jun 2026

Languages

VI native · EN intermediate

English — TOEIC 740
Comfortable in international teams