Ean Seng Chang

Software Engineer Intern at Coinbase

Mathematics & Computer Science @ Oxford

About Me

Hey! My name is Ean Seng Chang and I'm a master's university student studying mathematics and computer science in Oxford, and I'm a software engineer intern at Coinbase this summer. I'm proficient in many languages including Python, Java and Javascript, and I'm an avid competitive programmer well-versed in algorithms and data structures. I've pursued programming projects in full-stack development, machine learning, computer vision, and web design.

My Skills

Javascript

Typescript

Python

Java

C++

Scala

Haskell

HTML

CSS

React

NodeJS

Express

Bootstrap

Pug

Dotnet

MongoDB

PostgreSQL

Git

Docker

AWS

Linux

Postman

LaTeX

Pandas

NumPy

Keras

Pytest

Experience

Software Engineer Intern | Coinbase

Software Engineer Intern at Coinbase for the summer.

Graduate Software Engineer | Visa

Incoming

Joining Visa as a Graduate Software Engineer.

Software Engineer Intern | Eutelsat

Designed and implemented a serverless architecture featuring a multi-layered caching system (API Gateway, Lambda, DynamoDB), successfully reducing monthly operational costs by over £2,000.
Engineered multiple end-to-end data pipelines to ingest, validate, and store data in PostGIS and S3, and optimized a core Lambda function to achieve a 90% improvement in execution speed.
Strengthened code quality by authoring comprehensive unit and integration tests with pytest and embedding them into the CI/CD workflow for automated validation and regression testing.

PythonAWSCI/CDPostGISPytestSQL

Software Developer Intern | Ghyston

Worked on React on front end and Dotnet on back end
Designed and migrated the data in the backend when implementing new features
Improved the user experience by designing and creating a clean and responsive front-end

TypescriptReactC#

Projects

Zip Practice

A practice tool for LinkedIn's daily Zip puzzle. It generates random solvable boards at easy, medium, and hard difficulties. Puzzles can be shared by URL and the solution can be revealed at any time.

React

Link

Code

ProofMap

ProofMap takes a PDF of lecture notes and builds an interactive graph and list of theorems so you can see exactly how each result depends on the others.

PythonReactLLMs

Link

Code

Vision-Based Price Comparison

A group project pursued in partnership with a company to train an object detection model to identify various electronics products with high accuracy, generate a text description of the product, and use web scraping to display similar products. All of this is done on a raspberry pi.

PythonRaspberry PiMachine Learning

Link

Code

Craneon

A full stack website I developed as part of an internship. Features include logging in, adding bookings and viewing the bookings on a map.

MongoExpressReactNode

Link

Code

Chess Engine

A Chess engine made in Java from scratch that follows UCI protocol and plays at a level comparable to 1700 elo rating.

JavaHeroku

Link

Code

Online Square Brawl

An online multiplayer game inspired by Landfall's game using Socket.io to create lobbies that you can play with friends on the browser.

NodeSocket.ioHerokuHTML

Link

Code

Discord Bot

A utility bot for discord that provides detailed information on your server and tracks user activity. Also created a website using Pug that displays the statistics and commands of the bot dynamically in real time.

MongoExpressNodeBootstrapHerokuPug

Link

Code

My Creative Projects

Particle Font

Flocking Simulation

Evolution Steering

A* Visualised

Circle Images

Particle Clock

Phase Portrait Visualiser