Developed an internal full-stack application to support end-to-end global logistics operations. Implemented backend services with Java (Guice) and Spring, and a TypeScript (React) frontend. Built a data-sync pipeline from AWS S3 to the system using AWS Lambda and SQS to batch-update 69K+ shipper sales contacts, ensuring consistency across DynamoDB and Elasticsearch. Created a configurable, serverless feedback system (API Gateway → Lambda → DynamoDB → EventBridge) with daily aggregation and AI-driven narrative insights via Amazon Bedrock.

Software Engineer Intern at Volvo Cars

September 1, 2024 - December 1, 2024

Led the development of CI Hub, a full-stack web application for internal employees to reserve, view, and manage rig information. Built a scalable Python/Flask backend with secure RESTful APIs for high-volume data, and a responsive Vue.js frontend. Implemented secure authentication with Azure Active Directory (OAuth).

Software Engineer Intern at Kunlun Tech Co., Ltd.

June 1, 2024 - September 1, 2024

Refactored the recommendation system's recall logic and integrated ranking with ML model APIs; optimized reranking rules and validated improvements via A/B testing. Implemented content exposure dispersion using a sliding window, increasing new content CTR by 11.92% and retention by 9.77%. Created a degradation module to adapt system complexity under high load and built high-concurrency Go services with gRPC; designed a tiered cache (local, Redis, MySQL) to reduce data retrieval times by 30%+ and lower DB load.

Software Engineer Intern (Remote) at Duke University

May 1, 2024 - April 1, 2025

Built iOS rehabilitation apps in Swift/SwiftUI with modular components for video exercises, eye-tracking calibration, and patient progress tracking used in a North Carolina hospital. Designed clean API interfaces and MVVM architecture with unit tests in Xcode. Integrated Firebase for real-time data sync and crafted a user-friendly UI to boost engagement and adoption.