Dang Nguyen
Verified Expert in Engineering
Full-stack Developer
Seattle, WA, United States
Toptal member since July 13, 2021
Dang is a full-stack engineer with eight years of experience, first at Amazon and now at Coupang. He has strong full-stack experience with Java, Spring Framework, Hibernate, PostgreSQL, MySQL, HTML, CSS, JavaScript, React, Angular, Python, Django, Flask, Redis, and Kafka, plus game development using Unity.
Portfolio
Experience
- Spring - 8 years
- Java - 8 years
- Python - 8 years
- APIs - 8 years
- Technical Leadership - 8 years
- Amazon Web Services (AWS) - 7 years
- React - 6 years
- MySQL - 5 years
Availability
Preferred Environment
Linux, PyCharm, WebStorm, IntelliJ IDEA, MacOS, Windows
The most amazing...
...thing I've done was leading the project to scale and optimize the pricing system at Coupang to generate billions in revenue.
Work Experience
Full-stack Web Developer
MAO Web Solutions, LLC dba Jupiter Marketing Agency
- Developed an application that helps law firms to compare their Google Maps attributes with competitors and determine how to improve them.
- Built the entire application from scratch using Node.js and Nest.js for the back end and Next.js for the front end.
- Integrated with third parties such as BrightLocal, and Google API to collect data.
- Helped to lower the cost for investors by developing a new crawler using Puppeteer to collect data instead of using Octoparse.
Front-end Engineer
- Worked in the consumer safety team as a front-end engineer.
- Investigated and fixed bugs in Reddit mobile web using Jira as a reporting tool.
- Developed new blocking features for Reddit mobile web using React and TypeScript.
Senior Software Engineer
SoFi
- Developed a new landing dashboard using React and TypeScript.
- Researched and collaborated with an external team to implement a feed content system for the lending dashboard. Organized training sessions to help the team understand the system better.
- Led the effort of replacing an internal tool that identifies the loan applicant with an external third party.
Senior Software Engineer
Coupang
- Designed and developed a pricing admin tool that allows eCommerce operators to map competitor products with Coupang products and confirm price matching.
- Architected the new data streaming system that replaced the old batch job and can handle more than ten times the current data load using Apache Kafka.
- Improved and scaled the pricing system performance by optimizing query and implementing Redis's new caching system.
Software Engineer
Amazon.com
- Developed the back-end system to allow eCommerce vendors to publish their discount items to business customers.
- Designed and implemented the customer-facing application for the vendors to upload and manage their discounts.
- Designed the architecture for the new central platform that can scale and support multi-flavor products for business pricing projects. Developed the API for the central platform to create and track submissions from customers.
Experience
Unity Mobile Games
A Trusted, Safe, and Secure Local Marketplace Web Application
A Dashboard for Machine Learning Model Monitoring
https://www.outpace.ai/Education
Bachelor's Degree in Computer Science
Drexel University - Philadelphia, PA, USA
Skills
Libraries/APIs
React, REST APIs, Node.js, MobX, SQLAlchemy
Tools
Git, Jira, Celery, PyCharm, WebStorm, IntelliJ IDEA, Amazon Simple Queue Service (SQS), Figma
Languages
Java, Python, JavaScript, CSS, HTML5, HTML, SQL, TypeScript, ECMAScript (ES6), C#, Kotlin, Python 3, GraphQL, PHP
Frameworks
Spring, Spring Boot, Redux, React Native, Hibernate, Express.js, Next.js, .NET Core, Flask, NestJS, AngularJS, Unity, Flutter, Django, Django REST Framework, Ruby on Rails (RoR), .NET
Paradigms
Microservices, Web Application Architecture, REST, Requirements Analysis, Mobile Game Design
Platforms
Amazon Web Services (AWS), Unix, Apache Kafka, Azure, Docker, Kubernetes, Google Cloud Platform (GCP), Linux, MacOS, Windows, iOS, Android
Storage
Amazon DynamoDB, MySQL, PostgreSQL, Redis, MongoDB, NoSQL, Oracle Cloud, Databases, Amazon Simple Workflow Service (SWF)
Other
APIs, Web Development, Full-stack, Front-end, Architecture, Web Applications, Technical Leadership, Front-end Development, Full-stack Development, System Architecture, Performance, Back-end, Ajax, Responsive Web Apps, Mobile Apps, CI/CD Pipelines, Data Visualization, Software Engineering, Algorithms, Pattern Design, 2D Games, Game Design, eCommerce, Google SEO
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