Senior Backend Developer - BLITZ Labo
Designing and maintaining microservices for a cryptocurrency exchange, including auth, reward, and notification services over REST and gRPC.
Senior Backend Developer
Nguyen Quang Bach
Senior Backend Developer with 8 years building web applications, microservices, automation workflows, and AI-assisted production systems.
8+
years building web applications
40
person crypto exchange team
6
notable production projects
MSc
Software Engineering, VNU-UET
Experience
From startup core systems to exchange-grade services.
Senior Backend Developer - Minma Vietnam
Helped establish the Vietnam engineering team, led legacy-to-microservices migration, and built NestJS micro-apps plus AI-powered operational features.
Developer - Gobysend
Built CDP, CRM, and marketing automation backend services for email, SMS, Zalo, push messaging, tagging, segmentation, and external CRM synchronization.
Developer - Thu Do Multimedia JSC
Developed APIs for web and mobile applications, internal tools for sales teams, and R&D products for new business lines.
Selected Projects
Production work across fintech, service platforms, automation, and AI.
Crypto Exchange
Bitcastle
Large-scale cryptocurrency trading platform serving global users. Built and maintained exchange microservices, REST/gRPC APIs, and production support workflows.
NestJS, Microservices, Kafka, MySQL, AI-native engineering
Hoi An Photobooth
Production photobooth system for tourism services with camera, printer, kiosk control, real-time WebSocket status, image processing, and QR download flow.
C#, Python, Flask, OpenCV, WebSocket, SQLite
MidasTouch
Recommendation and stock screening platform built with data crawling, analytics jobs, deep learning experiments, and web product delivery.
NestJS, VueJS, FastAPI, Celery, Azure, GCP
Curama
Expanded a household service marketplace and supported the transition from monolith to microservices for better scalability and maintainability.
NodeJS, NestJS, VueJS, AWS, Ansible, LangChain
Gobysend
Automation platform for customer journeys across email, Zalo ZNS, SMS, promotions, remarketing, CRM synchronization, and background jobs.
Laravel, Java, VueJS, RabbitMQ, Elasticsearch
ThoXanh
Home cleaning booking platform with authentication, user profile APIs, booking history, query optimization, and production reliability work.
PHP, Laravel, React
Skills
Backend depth with enough product range to ship end to end.
Languages
NodeJS, TypeScript, Python, Java, PHP
Backend & Platforms
NestJS, ExpressJS, FastAPI, Flask, Celery, Laravel, VueJS, Electron
Architecture
Microservices, distributed systems, gRPC, REST APIs, event-driven architecture
Data & Infrastructure
PostgreSQL, MySQL, MongoDB, TimescaleDB, Elasticsearch, OpenSearch, Redis, RabbitMQ, Docker, AWS, Azure, NGINX, GitLab CI
AI Engineering
LangChain, Gemini, OpenAI API, n8n, prompt engineering, PyTorch, Cursor, Claude Code, Codex
AI Workflow
Using AI as a development partner, not just a code generator.
Research
Use AI to quickly understand unfamiliar domains and APIs, such as camera control for photobooth device integration.
Spec & Planning
Write and evolve specs with AI assistance, then turn them into implementation plans that can be reviewed and adjusted.
Coding & Testing
Let AI agents implement scoped plans, run tests, then manually review behavior and iterate with precise bug reports.