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Oladayo-Ahmod/README.md

Oladayo Ahmod · 0xSpectreSec

**Smart Contract Security Researcher · Full-Stack Blockchain Developer **

Hunting bugs on-chain | Building in public | Cyfrin grad

X GitHub Email


About me

Smart contract security researcher and full-stack blockchain developer from Nigeria with 4+ years building across the entire web3 stack — from smart contracts to frontend dApps to backend infrastructure. Cyfrin Updraft auditing graduate, now actively competing in audit contests and documenting the journey publicly.

My full-stack background across Solidity, Cairo, Rust, Move, and Leo (Aleo) — combined with frontend and backend experience — gives me end-to-end system intuition that pure contract auditors often lack. I understand how protocols are architected from every layer, which sharpens how I find where they break.

One of the few security researchers who can read and reason about ZK-native smart contracts on the Aleo ecosystem — an increasingly valuable niche as zero-knowledge protocols grow.


Security work

audit exercises   →   Puppy Raffle · ThunderLoan · TSwap (Cyfrin curriculum)
attack vectors    →   reentrancy · oracle manipulation · access control · flash loan exploits · MEV
zk focus          →   Aleo · Leo · ZK circuit review
tools             →   Foundry · Slither · Aderyn · Echidna · Hardhat
platforms         →   Codehawks · Code4rena · Sherlock · Immunefi

Featured builds

Project Description Chain Stack
Veilance Privacy-first freelancing platform with ZK milestone escrow Aleo Leo · Next.js · Supabase
dFreelancer Fully on-chain decentralized freelancing platform Ethereum Solidity
DAO dApp Decentralized Autonomous Organisation Ethereum Solidity · Next.js · TS
zkbtc-vaults ZK-based Bitcoin vaults zkSync TypeScript
zk-freelance ZK-powered freelance marketplace CSS
dao-on-zkSync-era DAO on zkSync Era zkSync TypeScript
escrow-contract On-chain escrow Ethereum TypeScript
NFT Marketplace NFT marketplace on Celo Celo JavaScript
suitity Sui ecosystem project Sui Move
icp-lottery Lottery on ICP ICP Rust
celo-dao-tut DAO tutorial on Celo Celo Solidity

Full-stack blockchain development

Layer Skills
Smart contracts Solidity · Cairo · Rust · Move · Leo (Aleo) · Yul
Frontend Next.js · React · TypeScript · Ethers.js · Starknet.js
Backend Node.js · Express · PHP · Laravel
Databases MySQL · MongoDB · PostgreSQL · Supabase
Infrastructure LAMP stack · MERN stack · REST APIs
Chains Ethereum · StarkNet · zkSync · Celo · ICP · Sui · Aleo · XRPL

Multi-chain experience

Ethereum StarkNet zkSync Aleo Celo ICP Sui XRPL


Languages & tools

Security Foundry Slither Aderyn Echidna

Smart contract languages Solidity Cairo Rust Move Leo

Web & backend TypeScript Next.js Node.js PHP


Currently

  • 🔍 Working through Damn Vulnerable DeFi challenges
  • 📖 Studying past audit reports on Solodit.xyz
  • 🏆 Competing on Codehawks First Flights
  • 🔐 Exploring ZK circuit security on Aleo
  • 📝 Building in public on @0xSpectreSec

"The best auditors aren't just bug hunters — they're builders who understand how things break."

Open to: Private audits · ZK security research · Contest collaborations · Full-stack blockchain consulting

Pinned Loading

  1. dFreelancer dFreelancer Public

    This is a fully on-chain decentralized freelancing platform deployed to sepolia testnet

    CSS

  2. an_nft_marketplace an_nft_marketplace Public

    An NFT marketplace deployed to Celo blockchain

    JavaScript 4

  3. DAO_dApp_Typescript DAO_dApp_Typescript Public

    A decentralized Autonomous Organisation (DAO) dApp with solidity, next js and typescript

    TypeScript

  4. veilance veilance Public

    TypeScript

  5. escrow-contract escrow-contract Public

    TypeScript