Hello! 👋

I'm Nguyen Le Hoang

Senior Software Engineer

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About Me

7+ years of experience building scalable backend systems using PHP, Node.js, Golang, and Python. Led a team of 6 engineers to develop and scale high-performance Shopify applications, with a strong focus on performance optimization and infrastructure cost efficiency. Experienced in designing internal platforms and data systems to support business growth. Highly motivated by solving complex problems, improving system reliability, and mentoring engineers.

Designed and scaled production systems from 0 to 5,000+ users and 10M+ of daily records

Strong ownership in system architecture, data modeling, and infrastructure cost optimization

Hands-on technical leader with experience leading a 6-engineer team

Deep experience in ecommerce platforms, data synchronization, and AI-powered products

Technical Skills

PHP (Laravel) Node.js Golang Python PostgreSQL MongoDB Redis RabbitMQ AWS Kubernetes Docker Microservices Shopify LangGraph OpenCV

Projects

01

Promer – AI Application Ecosystem

Led a team of 6 engineers building microservices architecture using PHP, Node.js, Python, and Golang. Designed AI-powered features using LangGraph and built an advanced Image Editor with Azure Text Detection, OpenCV, and LaMa Inpainting. Introduced AI-assisted development workflows that doubled team productivity.

PHPNode.jsPythonGolangRabbitMQLangGraphOpenCVLaMaAzure
02

FeedHub – Google Shopping Feed Platform

Architected and scaled a Shopify-based Google Shopping Feed platform from the ground up to support 5,000+ active users and 10M+ of product records synced daily. Redesigned data layer combining PostgreSQL and MongoDB with partitioning and read replicas. Achieved 35-40% infrastructure cost savings through optimization.

LaravelGolangPostgreSQLMongoDBRedisAWSKubernetesShopify
03

Omnisell – Multi-Channel Ecommerce Sync

Built core features enabling one-click, real-time synchronization of products from Shopify to Etsy, eBay, and Amazon. Designed synchronization mechanisms to ensure data consistency and reliability across multiple ecommerce platforms.

LaravelPostgreSQLRedisShopifyEtsy APIeBay APIAmazon API
04

Shopify App Operations & Scaling

Owned and maintained stable, revenue-generating Shopify applications (FeedHub, SocialWidget, OnePixel), ensuring scalability and production reliability. Strengthened hands-on experience in microservices operations and Kubernetes-based systems.

GolangKubernetesMicroservicesGoogle CloudShopifyAWS

Experience

Senior Software Engineer

FireGroup Technology

October 2019 - Present
  • Led a team of 6 engineers while remaining hands-on, guiding architecture and technical decisions for AI application ecosystem
  • Designed microservices architecture using PHP, Node.js, Python, and Golang with RabbitMQ for async communication
  • Architected shared API Gateway with rate limiting and centralized billing system used across multiple products
  • Built advanced Image Editor module integrating Azure Text Detection, OpenCV, and LaMa Inpainting for Canva-like capabilities
  • Scaled FeedHub platform from 0 to 5,000+ users handling 10M+ of product records daily
  • Redesigned data layer combining PostgreSQL and MongoDB with partitioning and read replicas for performance at scale
  • Led infrastructure optimization efforts resulting in 35-40% cost savings through AWS S3 to DigitalOcean migration and background job optimization
  • Built internal systems that automated workflows and reduced manual operational effort by 40%
  • Designed real-time product synchronization system for Omnisell enabling multi-channel ecommerce sync

Junior Software Engineer

FUJINET SYSTEMS JSC

April 2018 - August 2019
  • Developed and maintained functional modules for NHK personnel information system managing employee schedules, workplaces, and business-trip accommodations
  • Migrated large-scale Fooding Journal restaurant management system from Adobe Flex 3 to Angular 4
  • Refactored legacy UI components and implemented new features using modern frontend technologies

Education

Application Software

FPT Polytechnic

January 2015 - August 2017

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