Web3 & DeFi

Ethereum wallet analyzer for On-chain data analysis


As part of my learning journey into the DeFi space, I built an Ethereum wallet analysis tool using TypeScript and the Ethers.js library. This project provides insights into trade performance on Uniswap by:
■ Connecting to the Etherscan API to fetch transaction history for a given Ethereum address
■ Identifying Uniswap V2 and V3 swaps from Ethereum transaction logs and storing trade data
■ Calculating Profit and Loss for each ERC-20 token held by the address

■ Built in 2025

Ethereum Decentralized App (dApp)


■ Smart Contract on the Ethereum blockchain (Ropsten testnet)
■ Back-end: Ethereum Virtual Machine (EVM)
■ Front-end: VueJS, web3.js, Metamask
■ chargingledger-testing.nicolasguillaume.com (UI is still work in progress)
■ Built in 2018

Python crypto trading bot


■ Connect to the Bitmex exchange API
■ Back-end: Python (Flask) and Ta-Lib
■ Built in 2020