Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

Hi, I’m Nguyen Quoc Cuong, a backend engineer with 5+ years delivering production systems across SaaS, fintech, and AI. I specialize in Python (FastAPI, Django) and have deep experience in distributed, async architectures and cloud-native infrastructure. I’ve built multi-tenant platforms serving 1,000+ users, real-time notifications systems handling thousands of concurrent connections, and I’ve led teams through architecture and governance. I enjoy solving tough scalability and reliability challenges and integrating LLMs, RAG pipelines, and multi-agent workflows.…Hi, I’m Nguyen Quoc Cuong, a backend engineer with 5+ years delivering production systems across SaaS, fintech, and AI. I specialize in Python (FastAPI, Django) and have deep experience in distributed, async architectures and cloud-native infrastructure. I’ve built multi-tenant platforms serving 1,000+ users, real-time notifications systems handling thousands of concurrent connections, and I’ve led teams through architecture and governance. I enjoy solving tough scalability and reliability challenges and integrating LLMs, RAG pipelines, and multi-agent workflows.

Nguyen Quoc Cuong

Back-End Developer, Full Stack Developer, Web Developer, +2





Hi, I’m Nguyen Quoc Cuong, a backend engineer with 5+ years delivering production systems across SaaS, fintech, and AI. I specialize in Python (FastAPI, Django) and have deep experience in distributed, async architectures and cloud-native infrastructure. I’ve built multi-tenant platforms serving 1,000+ users, real-time notifications systems handling thousands of concurrent connections, and I’ve led teams through architecture and governance. I enjoy solving tough scalability and reliability challenges and integrating LLMs, RAG pipelines, and multi-agent workflows.…Hi, I’m Nguyen Quoc Cuong, a backend engineer with 5+ years delivering production systems across SaaS, fintech, and AI. I specialize in Python (FastAPI, Django) and have deep experience in distributed, async architectures and cloud-native infrastructure. I’ve built multi-tenant platforms serving 1,000+ users, real-time notifications systems handling thousands of concurrent connections, and I’ve led teams through architecture and governance. I enjoy solving tough scalability and reliability challenges and integrating LLMs, RAG pipelines, and multi-agent workflows.

Available to hire

Hi, I’m Nguyen Quoc Cuong, a backend engineer with 5+ years delivering production systems across SaaS, fintech, and AI. I specialize in Python (FastAPI, Django) and have deep experience in distributed, async architectures and cloud-native infrastructure.

I’ve built multi-tenant platforms serving 1,000+ users, real-time notifications systems handling thousands of concurrent connections, and I’ve led teams through architecture and governance. I enjoy solving tough scalability and reliability challenges and integrating LLMs, RAG pipelines, and multi-agent workflows.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Advanced

Work Experience

Founding Backend Engineer / Tech Lead at TechBuilder

January 1, 2023 - Present

Led a team of five engineers, defined system architecture, coding standards, and CI/CD pipelines, improving development efficiency by 15% through workflow automation and governance. Architected FlowMaster, a multi-tenant construction management SaaS platform serving 1,000+ users across organizations, with tenant-isolated backend (Django, PostgreSQL) ensuring data separation, scalability, and security. Delivered an integrated enterprise system spanning full project lifecycle management including contract and bidding workflows, drawing collaboration, BIM/IFC visualization, and 360° construction progress tracking. Implemented real-time capabilities using WebSockets and web push notifications, alongside asynchronous processing with Celery and Redis to support high-concurrency workflows.

Software Engineer at finno

March 1, 2024 - February 1, 2026

Built and maintained a financial reporting platform integrating with accounting service APIs to generate real-time financial reports (Profit & Loss, Balance Sheet, Cash Balance) in Google Sheets. Led migration from a Google Apps Script monolith to a 3-tier cloud-native architecture (Node.js on Google Cloud Run), eliminating runtime constraints and improving scalability and performance. Designed a report management system featuring automated refresh scheduling, dynamic parameter updates, multi-company switching, and configuration persistence via Google Sheets Developer Metadata API. Improved data integrity and release reliability through structured validation, regression testing, and CI/CD automation for deployments to Vercel and Google Cloud Run.

Back End Developer at BreadStack

March 1, 2024 - April 1, 2025

Architected a high-throughput real-time notification system using Django Channels, Redis, MongoDB, and Celery, transitioning from polling to Server-Sent Events (SSE) and reducing latency by 40% for thousands of concurrent users. Designed a fault-tolerant streaming architecture with automatic reconnection, centralized event handling, and Redis-based distributed locks to prevent duplicate publishers while maintaining high availability. Established CI/CD pipelines and deployed a dedicated ASGI service (Daphne) on GCP using Kubernetes and ArgoCD, achieving 99.9% uptime with zero-downtime deployments. Optimized MongoDB performance through indexing strategies, aggregation tuning, and Redis caching, reducing data retrieval time by 30% under heavy load.

Software Engineer (AI & Full-Stack) at Techainer

January 1, 2021 - May 1, 2023

Developed and deployed real-time fire and smoke detection models using YOLOv5 and YOLOv6, optimizing for accuracy, performance, and cost-efficiency across multiple camera streams. Built a full-stack monitoring platform (NestJS, Next.js, PostgreSQL) to process detection results and trigger real-time warning systems. Designed WebSocket and GraphQL integrations to enable low-latency communication between backend services and frontend dashboards.