Haebin Lee Email & Phone Number

Los Angeles, Ca, Us

Cerritos, California, United States

Cerritos, California, United States

• Led authentication using Nest.js and Typescript, scaling to thousands of users, ensuring high performance in microservice architecture.• Implemented establishing user authentication using Next.js and Typescript, scaling to thousands of users containerized app with Docker.• Integrated Gemini API and Vertex AI to automate personalized fitness schedules, projecting a 70% reduction in schedule creation time.• Migrated deployment to App Engine in Google Cloud using blue-green strategies, achieving 99.9% uptime and 40% faster load times.• Engineered data-intensive React.js dashboard, slashing render time 40% with custom hooks and Context API implementation.

San Francisco, California, United States

• Provided assistance to students enrolled in computer science courses, aiding them with assignments, programming, and math.

Seoul, South Korea

• Led payment system architecture using Domain-Driven Design(DDD), creating scalable microservices for real-time event-driven processing.• Boosted delivery service by 26% through A/B testing and JPA (ORM) optimization in Spring Boot, reducing database query time by 40%.• Optimized API performance, reducing response time 40% for 5M+ records via query indexing in PostgreSQL with Object-Oriented principle.• Leveraged Spring Batch to process 10M+ data entries, implementing chunk-based processing and parallel execution, achieving 60% faster.• Orchestrated zero-downtime updates for 60+ AWS Elastic Beanstalk servers, including contract and payment system achieving 99% uptime

Busan, South Korea

• Reduced API response time for scraping data from 180s to 60s by implementing parallel processing with Java’s Executor Service. • Engineered expense dashboard using React.js, rechart, cutting load time by 82% via daily batch processing, benefiting 500+ daily users.• Upgraded encryption to RSA, implementing unique customer key, enhancing data security, in collaboration with data governance team.• Optimized Elasticsearch indexing for e-contracts, enabling efficient word search and utilized Kibana for real-time data monitoring.• Facilitated new hire onboarding, conducting code reviews, resulting 25% faster integration and improved team productivity.

Seoul, South Korea

• Implemented real-time chat using Realm and infinite scrolling, boosting user engagement and reducing load times by 40%.• Optimized app performance using SQLite for local caching and streamlined API calls, resulting in 30% faster data retrieval.

Ho Chi Minh City, Vietnam

• Presented an Android human resource prototype app for a Vietnamese factory, leading to acquisition of a formal contract.• Constructed an app for managing overtime work utilizing Java and integrating a web view with HTML, CSS, and JavaScript.• Designed a responsive UI to both tablets and smartphones, enhancing cross-device compatibility and user engagement.

Master'S Degree, Computer Science

Bachelor Of Science - Bs, Computer Science