Liangji Yu | Full Stack Developer

Some Things I've Built

Trade Track

An open-source trading journal designed to help traders record, explore, and revisit their trades with ease. It provides a structured foundation for trade analysis and quantitative algorithm testing.

TypeScript
Vue
Pinia
Shadcn UI
C#
.Net
SQL

Expressive Cart

A full-stack e-commerce built with React, Express, and PostgreSQL.

React
Express
PostgreSQL
TypeScript

Liangji Yu Portfolio Website

A personal portfolio website built with Next.js, showcasing my projects, collaborations, and experience in a clean and modern design.

Next.js
React
TypeScript
Tailwind CSS
Framer Motion

Life Protocol

A mobile application inspired by Dan Koe's How to Fix Your Entire Life in 1 Day, designed to guide users through a transformative reset. The app provides a supportive, interactive system that helps users rebuild their life with clarity, intention, and momentum.

Kotlin
Junit
Room
Hilt
Android
Gradle
MVVM

Data Mimic

A powerful Streamlit application for Pydantic model testing and API integration. Define Pydantic models, generate interactive UI forms automatically, create sample data, and test against REST APIs.

Python
Streamlit
Pydantic
HTTPX

User Hub

Core user management system for rapid learning project development.

JavaScript
React
AntDesign
Umi Framework
Java
Spring Boot
SpringMVC
MySQL
MyBatis

AI Manus

The project focuses on the practical application of the Spring AI development framework and involves the use of various mainstream AI clients and tool libraries.

Java
Spring Boot
Spring AI
LangChain4j
RAG
MCP
Postgres
JavaScript
Serverless

FireClick POS

A modern point-of-sale system designed to streamline retail transactions and inventory management for small businesses.

C#
.NET Framework
WPF
SQLite
MVVM

Reinforcement Learning for Smart Hospital Scheduling

Reinforcement learning-based smart hospital scheduling system using SimPy simulation of staff, patients, equipment, and rooms with spatial and operational constraints, a multi-agent PyTorch framework for schedule optimisation, and heterogeneous graph embeddings to represent multi-type entities and capture relational dependencies for context-aware decision-making.

Python
PyTorch
SimPy
Pandas
NumPy
Matplotlib
Jupyter Notebook

Multi-Factor Authentication Simulator

An interactive PyQt simulator with intuitive UI/UX to demonstrate real-world MFA methods, helping users understand security workflows through hands-on scenarios.

Python
PyQt
MVVM

NHS Real-Time AKI Prediction System

A real-time ML feature prediction pipeline by streaming patient EHR data through a message broker and Redis for persistent caching, ensuring low-latency preprocessing and consistent high-throughput data ingestion for model readiness.

Python
PyTorch
Scikit-learn
Pandas
NumPy
Matplotlib
Redis
Docker
Kubernetes
Prometheus

Readit

Readit is a website that leverages the official Reddit API to browse aggregated content. Users can view the latest posts, explore comments, and search for specific topics across the web, all within a custom-built interface.

React
TypeScript
JavaScript
CSS
Redux
Vite

Jammming

A sleek, user-friendly music discovery and playlist-building website designed to help users explore songs and seamlessly export their curated playlists to Spotify.

React
TypeScript
JavaScript
CSS

Game of Morel

A quirky strategy game where players compete to collect, cook, and outsmart each other using magical morel mushrooms.

Java
JavaFX

Apocalyptic Simulator

Dive into a virtual ecosystem where each species interacts with one another, causing changes in their statistics and providing a visual representation of the population dynamics over time.

Java
JavaFX
CSS

Pomodoro Timer Website

A productivity-enhancing app that utilises the popular Pomodoro technique to help you manage your time effectively and boost your productivity.

React
JavaScript
CSS
Blender

Human Resources Contract

Contract providing functionality to manage employee registrations, terminations, and salary withdrawals in either USDC or ETH. The contract integrates with an Automated Market Maker (AMM) and a price oracle to facilitate salary payments in ETH.

Solidity

Simple Store Insights

Database system for searching item price and checking personal spending.

Python
Tkinter
SQLite

Collaborations

Sudoku

Sudoku is a puzzle app that lets you solve classic number-placement challenges. It features a clean, distraction-free design with a simple interface to keep you focused and engaged.

Python
GTK4
libadwaita