**Chris Yu**
yqy1998@gmail.com | (856) 986-9105 | GitHub | LinkedIn

### **EDUCATION**
**University of Pennsylvania**
*Master of Computer and Information Technology* | 08/2021 – 05/2023
GPA: 3.9/4.0
*Coursework*: Databases, Data Structures & Algorithms, OOD, Distributed Systems, OS, Big Data, ML/AI

**University of California, Davis**
*Bachelor of Science in Environmental Science & Management (GIS) & Bachelor of Arts in Economics* | 09/2016 – 03/2020

### **SKILLS**
- **Programming/Scripting**: Java, Golang, C/C++, C#, Python, JavaScript, CSS, HTML5
- **Web Tech**: React, Spring Boot, Go, Node.js, Hibernate, MySQL, Elasticsearch, MongoDB, Caffeine
- **Tools & Platforms**: Spark, Docker, Git, Jenkins, Postman, AWS, GCP, Azure Redis

### **WORK EXPERIENCE**
**Software Engineer (Frontend)** | *PurryPurryInc*, Los Angeles, CA | 09/2023 – Present
- Led E-Commerce web development for a 10-person startup, launching a pet jewelry Shopify store with Liquid, JavaScript, and HTML/CSS.
- Implemented responsive design for cross-device compatibility, reducing average loading time by 40%.
- Enhanced user experience with dynamic homepage product displays, increasing click-through rates by 60%.

**Full Stack Software Engineer** | *Joblogic-X Corporation*, Plano, TX | 01/2023 – 08/2023
- Developed a video-sharing social app (Google Play & App Store) using AWS (EC2, S3, Cognito, CDN).
- Built 15+ RESTful APIs (Node.js, MongoDB) for user auth, video posting, and engagement features.
- Refactored video-upload API, cutting latency by 20% and S3 storage costs by 25%.

**Software Engineer Intern** | *Uber*, Hong Kong, China | 09/2022 – 12/2022
- Designed a traffic jam warning feature for Uber Reserve using Spring Boot and trajectory data.
- Boosted data collection efficiency by 30% via MySQL indexing on snapshot datasets.
- Improved system performance by 20% through bandwidth compression in route-data communication.

### **PROJECTS**
**GameFlow: Twitch Resources Recommendation Engine** | 05/2023 – 08/2023
- Led a 15-developer team to build a Spring Boot/React app with Twitch API integration.
- Designed MySQL schema on AWS RDS and implemented caching (Caffeine), reducing response time by 40%.
- Deployed via Docker on Amazon App Runner with 80% JUnit/Mockito test coverage.

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