Hai Nguyen Ngoc

Engineered and maintained scalable integration APIs using Ruby on Rails on AWS for a high-scale web application serving over 1 million users, significantly improving platform efficiency and delivery velocity within a 6-person engineering team.

Built a visual drag-and-drop chatbot flow using Python and ReactJS that improved user engagement and optimized platform performance to reduce page load times.

Developed a guitar learning platform with Ruby on Rails and ReactJS supporting thousands of daily users, refactored legacy code to improve maintainability and launched a GraphQL API to enable bank integrations that increased transactions.

Designed and deployed features for a large-scale e-commerce platform using Ruby on Rails, increasing website traffic across Singapore and Malaysia and improving customer conversion through code and process improvements.

Developed and deployed features in a monolithic Ruby on Rails codebase, improving delivery predictability and system scalability using AWS, MySQL, and frontend technologies.

Developed a user-centric e-commerce platform for the Japanese market with Ruby on Rails, improving customer satisfaction and online sales while automating workflows and testing with Turnip.

Established an automated testing framework using Cucumber DSL, substantially increasing test coverage and reducing bug-related support tickets.

Coordinated logistics and customs documentation for over 50 international shipments per month, streamlining customs processes to maintain a high on-time delivery rate.

Completed a Bachelor of Science in Information Technology with coursework and projects focused on web development, backend systems, and algorithms.