👋Hi there, I am

Evan McGrane

A Professional

About Me

Fullstack Web3 Developer with a passion for learning.

Applied Physics (AP) graduate from Dublin City University.. Ranked 2nd in my class with a with first degree honours in 2021. Experienced web3 Engineer, focussed on multi-chain development in Defi, knowledgeable in researching, designing, developing and testing blockchain and web3 technologies which include experience with Solidity, Geth, Truffle, Hardat, Typescript, Ganache, React.js, web3.js, and C.

Passionate about Web3 and blockchain core infrastructure. My strongest languages are typescript, React/Next.js and solidity. I have a lot of experiencing devloping full stack web3 applications mainly in areas of Defi such as decentralized trading, lending and cryptocurrency bridging

Years of
Experience

Side Projects
Completed

of Hours
Spent Coding

Skills & Experiences

2022

2020

2019

2018

TypeScript

My main language is Typescript. I have been using typescript for 2 years now and and well versed in designing & implementing robust typesafe applications

React/Next.js

My main Frontend stack includes Next/React.js. I am skilled in creating preformant pixel perfect and responsive User interfaces with elegnat UI/UX

Node.js

Node.js with typescript is my primary backend language. I have expereince creating fast API services and backend architecture aswell as NPM packages using Node

Solidity

I am a skilled smart contract engineer and have a profound understanding of the EVM. Skilled in smart contract acces control, proxies, upgrades and ECDSA security patterns

Checkout Some of my work

All

Nodejs

Nextjs

React

Solidity

Gasless Decentralised Exchange (DEX)

This is a decentralised exchange i made which is a pancake swap exchange that lets users swap and trade through the pancake swap smart contracts without having to pay transaction fees or gas for trades. Next.js Node.js MongoDB Postgresql Typescript Web3-React Ethers.js Web3.js

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Cross-chain Crypto Bridge/Dex

Full cross chain cryptocurrency bridge that supports 9 EVM chains. Users can bridge synthetic assets and swap on desired chains. Next.js Node.js MongoDB Postgresql Typescript Web3-React Ethers.js Web3.js Ren.js Prisma tRPC, ZOD Render

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Blockchain exploer & indexer

Full stack Etherscan like blockchain explorer for Ren L1 blockchain. Users can query blocks, transactions, ENS addresses and more. Features a bytecode decoder to extract error logs, event logs and smart contract input data info. React.js, Typescript, Node.js

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Multi-chain Wallet System Package Demo

Web3 wallet NPM Package Concept sandbox that allows users to connect to multiple wallets on different chains simultaneously in order to submit multiple paralle txs. This allows app users to abstract the need to show users what chain they're on. React.js Typescript, Ren.js Node.js

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Web OAuth

Web OAuth Project developed using Next.js, NextAuth, Chakra UI, React, Redux, Redux Toolkit, TypeScript, Google OAuth, and more.

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Web3 ECDSA Cryptographic Login System

Web3 eliptic curve digital signature & email based login system Concept using ENS verification and Mongo DB database

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Crypto Bitcoin Price Chart

Cryptocurrency Bitcoin Price Chart was developed using React, Typescript, coingecko-api, react-chartjs-2, chart.js and tailwindcss.

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Astral Bridge Contracts v1

this project hosts the complete bridge contracts i designed in solidity for my latest cross chain bridge AMM project. the bridge factory is deployed on 9 EVM chains and communications between chains is enabled through a backend signature verifier API

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Advanced Defi Arbitrage Bot

Custom build Arb bot with Node.js/Solididty which can arbiyrage DAI/WETH across Uniswap/Suishiswap and 2 other exchanges using flashloans

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Translator Application

It helps to translate from one language to multiple languages. It is developed using svelte, typescript, nodejs and more.

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Crosschain AMM Contracts

Solidity smart contracts for the Cross chain DEX i am currently working on. I use Renjs for bridging and intrface with the uniswap V3 contracts to preform swaps

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Gambling Contracts

Solidity smart contracts for a gambling service that allows users to stake crypto assets in order to double their money. I use chainlink keepers and VRF for on chain randomness. In order to pay the chainlink fee i take a subsidy from the users bet to swap for LINK on uniswap to cover the fee

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Limit Order DEX

Solidity smart contracts for a limit order, orderbook style dex that matches users orders in two queuses (a buy and sell queue). I use bubble sort to dynamicall order trades by price so the top trades always match each other

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Multi-signature Wallet

Solidity smart contracts for a multi sig wallet that allows users to create instances of a consensus based wallet. users can transfer native and ERC20 assets. In order for transfers to execute a majority consensus of agreement must be reached between all wallet owners

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Read a few of my Academic Papers

All

Financial Algorithms

Non-crypto Blockchain Usecases

Survey of the adoption of Blockchain in Academia

Litreature review that discusses and analyses the potential of a distributed blockchain model being adopted to remodel different frameworks in Academia such as Peer-review

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Blockchain Model to re-invent the Peer-review system

This paper propses an Proof Of Stake (POS) distributed model that uses game theory and crypto incentive tactics to create a decentraised peer review model that distributes wealth and reputation amoungst the community

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Exploring Financial algorithms for Flash loan Arbitrage

Paper exploring the mathematics behind concepts in Defi such as Automated market makers (CPAMM's) aswell as efficent algorithms for executing flash loan arbitrage

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Some Areas In Defi Ive been Researching

Developments in Crosschain Defi

New Developments in Cross-chain

One conecpt I have been exploring is the a development in crosschain Defi where users can execute trades or smart contract calls on one blockchain from an entirely different one

This is enabled through the concept of cryptographic hashing and digital signatures. By extracting any contract call into its raw bytecode we can sign this data through the use of Eliptic curve cryptography. In order to be able to execute blockchain agnostic trades we can compare this encode into this signature the chain it is to be executed on (domain seperator) Then on the destination chain we verify the signature by comparing hashes.

This revolution allows for example, a user to execute a smart contract call on Ethereum from Polygon. See example on my githib here

Defi Math

Im always learning about the financial algorithms behind thing slike AMMs, automated staking rewards/yield, and POS consensus mechanisms

Ultra Fast cross-chain Transfers

Cross chain transfers are slow

bridging takes time. The concept of a lender fixes all of this. With a lender one can execute a bridge on source chain. when this bridge is confirmed we know the user has already paid the assets they are moving.

As this is confirmed we can use a lender smart contract with collateroal to execute the trade on the destination chain immediately.

Then when the bridge is complete the users funds go back to pay the lender. This makes doing cross chain trading super fast.

Ever Heard Of Free Transfers?

Gass-less Trades

Another concept that is made possible through digital signatures is the ability to allow your app to off Gas-less trades for users. When a user signs some transaction metadata, the signature acts as proof that they give permission to execute the trade. Then some ADMIN private key can execute this trade on behalf of the user and pay the gass tokens for them.

Cross-chain Limit Order Transactions

Cross-chain AMM Limit Orders

One thing that AMMs cannot do well is to execute Limit orders. This is because smart contracts cannot listen to external off-chain data sources in order to know when to execute a trade. Also if they could how would the gas tokens be paid.

By using hats called a forwarder smart contract (smilar to above) a user can again, sign their transaction Metadata before hand with all of the execution criteria defined.

We can store this metadata in an off-chain database with a constant automated backend worker scanning the blockchain to checking if the ececution criteria has been met. If so the trade can be autonomously executed and the gas tokens paid by the ADMIN private key which has the permission to make the trade on the users behlaf

From
Avax

to
Zcash

Using all of these techniques one could for example, bridge native Bitcoin to Avalanche using a bridging service like RenJs and swap wrapped BTC for AVAX. The same holds true for any asset on any chain

Im Always Hitting Commit

These are just some things i like researching. Im always putting my new knowledge into practice by building cool applications

I Love Building Defi Applications

Defi, Defi, Defi...

I have always been facinated by decentralized finance decentralised nature of blockchain can allow for the creation of trustless financial applications.

I am always learning about new developments in Defi around ever growing protocols around concepts such as AMMs and decentralised lending.

In my spare time i am always building and learning about the underlying protocols, secrity frameworks and financial mathematics that power some of the best Defi applications that exist today,

See My Recent Youtube Videos

Upcoming Vide Tutorials

In this video i go over some side projects that i have worked on that i plan to make full walkthroughs on.

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Multisig Wallet Part 1

In this video i begin a full walkthrough on creating a full stack web3 dapp. A multisig wallet smart contract linked up to a responsive frontent in Javsacript

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Multisig Wallet Part 2

In this video we start the develoment of the multisig smart contact and create the consensus model which requires agreement between signatories in order to execute transfers.

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