🎓 M.S. Spatial Data Science @ University of Southern California (Dec 2025)
💻 MERN Full-Stack Developer focused on building production-ready web applications
📍 Los Angeles, CA | OPT & STEM OPT Eligible (Feb 2026 – Jan 2029)
I am a MERN Full-Stack Software Engineer with hands-on experience building production-style web applications from frontend UI to secure, scalable backend APIs.
My background combines software engineering, system design, and data-driven thinking. I specialize in designing and implementing real-world features such as authentication, role-based access control, RESTful APIs, and state-managed React frontends. I enjoy working across the stack and building systems that are reliable, maintainable, and aligned with real product requirements.
While my academic training includes machine learning and large-scale data systems, my current focus is on full-stack web development and backend engineering, particularly within MERN-based product environments.
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Languages & Frameworks
JavaScript / TypeScript (React, Redux Toolkit, Node.js, Express),
Python (Flask, FastAPI), SQL / NoSQL (MongoDB, PostgreSQL, MySQL) -
Frontend
React component architecture, custom hooks, Redux Toolkit, authentication-aware UI,
pagination, search, responsive design -
Backend
RESTful API design, layered architecture (controllers, services, models, middlewares),
JWT authentication, role-based access control, request validation -
Systems & Tools
Git & GitHub, Docker, AWS, CI/CD (GitHub Actions), Bash, Pytest -
Additional Experience
Data pipelines (Spark), machine learning pipelines, analytics dashboards
React, TypeScript, Node.js, Express, MongoDB, JWT
- Built a production-style MERN e-commerce application supporting real-world user and admin workflows
- Implemented JWT-based authentication and role-based access control with protected routes
- Designed RESTful APIs using layered backend architecture for products, carts, and orders
- Developed scalable React frontend with Redux Toolkit, custom hooks, pagination, search, and cart synchronization
- Focused on maintainability, security, and real-world system design rather than demo-level CRUD
🔗 https://github.com/MONA100421/ShopFlow
- Built an end-to-end deep learning pipeline (feature extraction → CNN training → evaluation)
- Achieved 95% accuracy with reproducible experiments and documented workflows
🔗 https://github.com/MONA100421/DSCI552_Final_Project
- Implemented a Python + Spark pipeline for large-scale unstructured data processing
- Improved parsing efficiency using regex and batch processing
- Achieved >90% clean data accuracy
🔗 https://github.com/MONA100421/TEAM_03_DSCI550_HW_EXTRACT
- Built dashboards with Plotly/Dash for million-scale datasets
- Added filtering and drill-down features to support data exploration and decision-making
🔗 https://github.com/MONA100421/TEAM_03_DSCI550_HW_DATAVIS
🔗 https://mona100421.github.io/chenyi/
- LinkedIn: https://www.linkedin.com/in/wengchen/
- Email: wengchen@usc.edu/ she050623@gmail.com
⭐️ Open to Full-Time Software Engineer / MERN Full-Stack Developer roles Interested in building scalable web applications, backend systems, and user-facing products.