Aspiring Full-Stack Developer

Jack(Jiaqi) Peng

I’m a Business Analytics master's student at UCL, recognized for award-winning digital transformation strategies and innovative database systems, with a strong passion in backend development, probability theory, and a creative edge in data-driven, user-centric solutions.

Jack Peng

Projects

Wordle Replica

I built an interactive Wordle-style game with real-time feedback through colour-coded tiles, dynamic word validation, and responsive UI. It features efficient state management for guesses, win/loss handling, keyboard input support, randomized daily words, and smooth animations, resulting in a polished and engaging puzzle experience.

  • HTML
  • CSS
  • JavaScript
A Wordle replica called Word Masters showing guessed words with yellow and gray letter hints

Personal Blogging Platform API

I built a secure authentication system using JWT with stateless sessions and HTTP-only cookies, alongside role-based authorization to ensure only authors can modify or delete their posts. The platform provides a RESTful API with full CRUD for categorized, tagged posts, and I designed efficient Mongoose/MongoDB schemas to manage relationships between users and their content.

  • JavaScript
  • Node.js
  • MongoDB
Code snippet showing fastify routes for creating a RESTful API with CRUD