I am a Master of Applied Data Science student at the University of Southern California, graduating in June 2026. I build scalable full‑stack systems, data‑driven applications, and high‑performance web platforms. My background spans software engineering, data visualization, machine learning, and distributed systems, strengthened by multiple software development internships in the game and tech industry.
- Location: Los Angeles, CA
- Phone: (213) 910‑0622
- Email: lesleyyylj@gmail.com
- LinkedIn: https://www.linkedin.com/in/liujia-yu
- Available Start Dates: Dec, 2025 (Intern) | June, 2026 (Full‑time)
Graduate by: June 2026
Core Courses: Data Management, Machine Learning, Data Visualization, Web Technologies, Fairness in Artificial Intelligence, Information Retrieval and Web Search Engines
Sept 2019 – June 2023
Upper Second Class Honours | GPA 3.7
Core Courses: Machine Learning, Computer Graphics, Programming and Algorithms, Math for Computer Scientists, Databases and Interfaces, Software Engineering, AI Fundamentals, Data Structures, Programming Paradigms, Systems & Architecture
LilithGames | May 2025 – Aug 2025 | Shanghai
- Built Rise Of Kingdoms (Chinese site) and AFK Journey (global) websites using Django + Vue.js with responsive PC/mobile layouts.
- Implemented modular components, multilingual support, and CDN optimizations for global performance.
- Added structured data + Sitemaps, boosting SEO CTR by 60% in 28 days. Achieved CLS < 0.10 and optimized FCP.
- Built analytics platform with uni‑app + Vue and ECharts for interactive visualization.
- Integrated Android DeepLink navigation and extended table components with progress visualization.
Electronic Soul Network Tech Co. | Aug 2023 – Nov 2023 | Hangzhou
- Maintained DevOps web system for game server management using UmiJS + React.
- Used Ant Design for high‑efficiency UI development.
- Built interactive official page for Barbarq using jQuery, ModalJS, and swiperJS.
- Co‑maintained The Wandering Ark site using Vue.js.
BrainCo | Jun 2022 – Aug 2022 | Hangzhou
- Maintained BrainCo webpages with React and added interactive media features.
- Collaborated with UI/UX teams using Axure RP to build high‑fidelity prototypes.
React + TypeScript + Express + MongoDB | Jan–May 2025
Demo: https://csci571-hw3-456211.wl.r.appspot.com
Repo: https://github.com/LesleyYu/LiujiaYu.github.io
- Developed full‑stack platform integrating Artsy API with secure JWT auth and protected routes.
- Implemented server‑side caching to cut latency by 35%.
- Containerized and deployed on GCP with Docker.
- Built mobile version in React‑Native with shared API endpoints.
React + TypeScript + Node.js + Deck.gl + D3.js | Sept–Dec 2024
Repo: https://github.com/LesleyYu/BreatheBetter
Site: https://dsci-554.github.io/project-breathebetter/
- Built real‑time spatial visualization with Deck.gl and D3.js.
- Aggregated multi‑source data via custom APIs.
- Used spatial indexing + lazy loading to handle 50k+ data points efficiently.
- Wrote system documentation for research team extendability.
Sept–Dec 2024
Repo: https://github.com/LesleyYu/MachineLearningBasics
- Applied regression, SVM, decision trees, neural networks to real‑world tasks.
- Used Jupyter notebooks for supervised and unsupervised workflows.
- Performed model selection, regularization, cross‑validation, and deep learning.
Distributed MySQL + Flask + React | Oct 2023 – May 2024
Repo: https://github.com/LesleyYu/MeowDom
- Designed distributed MySQL architecture for user, item, and order data.
- Built responsive React front‑end using SCSS + Ant Design.
- Built RESTful backend with Python Flask.
- Worked in Agile team across proposal, implementation, and final delivery.
C++ + OpenGL + GLFW + GLM | Jan–May 2023
Repo: https://github.com/LesleyYu/3D_scene_swimmingPool
- Built interactive 3D scene with procedural geometry and OBJ loading.
- Implemented transforms, animation, cameras, textures, lighting, shadows, and Bézier curves.