Nguyen Van Quyen - Full-stack Engineer | Backend & Cloud Infrastructure Specialist - Full-Stack Engineer | Backend & Cloud Infrastructure Specialist

About

Proficient Full-Stack Engineer with over 7 years of experience in designing, developing, and deploying robust web services and complex systems. Specializes in backend development using Typescript and Node.js, coupled with extensive expertise in cloud infrastructure on GCP and AWS. Proven ability to lead and contribute across the entire software development lifecycle, from precise requirements definition and architectural design to hands-on coding, testing, and operational support. Adept at optimizing system performance and ensuring scalable solutions by bridging the gap between infrastructure and application layers.

Work Experience

Lead Software Engineer

Confidential Company | Internal Construction Platform

Oct 2023 - Dec 2024

Tokyo

Led the architectural overhaul and refactoring of complex legacy systems, optimizing internal architecture for enhanced performance and scalability.

Spearheaded architectural design, basic/detailed design, coding, testing, and release for the entire refactoring project.
Conducted in-depth analysis of existing applications to determine optimal data placement, overseeing data migration and refining system components.
Defined comprehensive migration strategies, selected appropriate system components, established robust branching strategies, and designed resilient infrastructure and CI/CD pipelines.
Developed and implemented a robust observability framework, guiding its evolution from initial architectural discussions to full operational deployment.

Software Engineer

Confidential Company | SaaS

Apr 2023 - Dec 2024

Tokyo

Developed a SaaS service leveraging AI to automate manual creation by recording browser and desktop operations, significantly enhancing efficiency in manual documentation.

Contributed to the modernization of a SaaS platform by refactoring a Firebase-based system, designing and implementing a new GraphQL API server with Nest.js.
Engineered and optimized cloud infrastructure on GCP, ensuring scalability and reliability for the new service.
Developed and deployed AI infrastructure on Azure, enhancing the platform's automated capabilities.
Supported frontend development and built a React Native desktop application, expanding user access and functionality post-backend launch.
Implemented advanced observability solutions and streamlined CI/CD pipelines, significantly improving operational efficiency and monitoring.

Lead Software Engineer

Confidential Company | Construction Platform

Apr 2021 - Oct 2023

Tokyo

Led the development of a data and information management platform for construction sites, providing data to various solutions to support safe, secure, and efficient construction processes.

Spearheaded the full lifecycle development of a data and information management platform, from inception to launch, supporting secure and efficient construction processes.
Designed and architected scalable internal data structures and robust APIs for seamless data ingestion from diverse on-site devices.
Directed detailed design and implementation efforts as a team leader, focusing on optimizing server performance to handle high-frequency data streams effectively.
Successfully met stringent non-functional requirements and achieved significant performance improvements through targeted tuning, ensuring platform stability and reliability.

Software Engineer

Confidential Company | Autonomous Construction Machine

Apr 2017 - Mar 2021

Tokyo

Developed an automated driving system for construction machinery to address operator shortages and enhance safety and efficiency on construction sites.

Designed and implemented embedded systems for construction machinery, utilizing model predictive control techniques.
Engineered data integration pipelines to import CAD models and sensor data into MATLAB, facilitating machine learning model training.
Developed and deployed high-performance control programs, integrating data from Lidar, cameras, and on-board instruments.
Constructed a virtual simulation environment within Unreal Engine, collecting extensive driving pattern data to significantly improve prediction accuracy of autonomous systems.
Managed end-to-end software development, including requirements gathering, architectural design, detailed implementation, and testing, as a core member of a lean team.

Certificates

Professional Google Workspace Administrator Certification

Google Cloud

Jun 2025

Professional Machine Learning Engineer

Google Cloud

Jun 2024

Professional Cloud Database Engineer Certification

Google Cloud

Jun 2024

Professional Cloud Developer

Google Cloud

Jun 2024

Professional Cloud Network Engineer

Google Cloud

May 2024

Professional Cloud DevOps Engineer

Google Cloud

May 2024

Professional Cloud Security Engineer

Google Cloud

May 2024

Professional Data Engineer

Google Cloud

May 2024

Professional Cloud Architect

Google Cloud

May 2024

Languages

Japanese (Native) , Vietnamese (Native) , English (Proficient)

Skills

Programming Languages

TypeScript
JavaScript
Node.js
Python
Go
C/C++
Rust
Java
PHP
HTML/CSS
Sass/Less
Deno
Effect.ts

Frameworks & Libraries

React.js
Next.js
React Native
Unreal Engine
GraphQL
Spring
Springboot
Seasar(2)
Struts
Laravel
CakePHP
Zend Framework
CodeIgniter
Symfony
FuelPHP
Django
Flask
Tornado
.NET Framework
.Net MVC
Ruby on Rails
Cocos2d-x
WordPress
jQuery
Vue.js
Nuxt.js
AngularJS
Bootstrap
Redux
Unity
RxSwift

Databases

Oracle
MySQL
PostgreSQL
SQL Server
MongoDB
SQLite
Datastore/Firestore
BigTable
Firebase

Cloud Platforms

GCP (Google Cloud Platform)
AWS (Amazon Web Services)
Azure

DevOps & Tools

Docker
Kubernetes
Terraform
Git
SonarCloud
Jest
Scrum
Jira
OpenAPI
Notion
OAuth 2.0
Figma
CI/CD
Observability

Operating Systems

Linux
Windows
iOS
Android
Unix

Specialized Skills

Embedded Systems
AI/ML Solutions
Matlab

Interests

Walk