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Leihyn/README.md

Onatola Timilehin Faruq

Blockchain Engineer | DeFi Protocol Integration | Smart Contract Security

Portfolio LinkedIn Email Medium


About

Protocol-focused blockchain engineer specializing in DeFi integrations and developer education. I build production systems from smart contracts to full-stack applications, and translate complex protocols into content developers actually use.

Currently: Blockchain Engineer at DeFiConnectCredit Production DeFi integration (Aave v3, Uniswap v3/v4, Curve, GMX). Security reviews, testing infrastructure, gas optimization.

Background: Uniswap Hook Incubator (UHI7) Graduate | School of Solana Student | Core Protocol Engineer at TruthBounty


Featured Projects

Sentinel AI-Powered Smart Contract Auditor

Multi-Agent Security Framework | Solidity, Rust, Move, Cairo

Automated auditing framework for competitive security contests (Sherlock, Code4rena, Cantina). Multi-agent pipeline: reconnaissance, static analysis (Slither/Mythril), LLM-powered vulnerability hunting, and Foundry-based PoC generation with mainnet fork validation. Detects oracle manipulation, flash loan attacks, reentrancy variants, and access control issues across 4 smart contract languages.

Python Slither Mythril Foundry Semgrep


Sentiment Dynamic Fee Hook for Uniswap v4

UHI7 Graduate Capstone | Base Sepolia | 83 Tests Passing

Production-ready Uniswap v4 hook implementing counter-cyclical dynamic fees (0.25%-0.44%) based on real-time market sentiment from 8 off-chain sources. Multi-keeper architecture with Chainlink Automation + Gelato, <30k gas overhead per swap. 42 unit + 8 integration + 11 invariant + 22 gas benchmark tests.

Solidity Foundry Uniswap v4 Chainlink


OmniSwap SDK Cross-Chain Swap Middleware

TypeScript SDK | 6 Blockchains | 70KB+ Documentation

Production-grade SDK enabling atomic swaps across heterogeneous blockchains. Chain-specific adapter pattern, HTLC-based swap protocol, typed errors, exponential backoff retry logic, and comprehensive docs with API reference, tutorials, and working examples.

TypeScript Multi-Chain SDK Design


TruthBounty Prediction Market Reputation Protocol

2nd Place, Seedify Hackathon | BNB Chain | Live Demo

Reputation infrastructure integrating 13 prediction markets (Polymarket, Azuro, Thales, PancakeSwap Prediction). TruthScore algorithm using Wilson Score confidence intervals, soulbound NFTs with on-chain SVG, and cross-chain indexing via custom subgraphs.

Solidity The Graph BNB Chain Soulbound NFTs


Nocturne Private Payments on Solana

ZK Privacy Protocol | Deployed on Devnet | 97% Unlinkability

Privacy protocol with stealth addresses (DKSAP), fixed-denomination privacy pools with Merkle commitments, ZK proofs (Noir/UltraHonk) for withdrawals, and TEE relay for identity protection.

Rust Anchor Solana Noir Zero-Knowledge


Privacy Chronicles: Glass Wallet Privacy Education Through Storytelling

Winner, Solana Privacy Hackathon | Content Creation Track Winner, Zypherpunk Hackathon | Live Demo

Interactive comic series exploring blockchain privacy through narrative. Glass Wallet: 12-page comic on selective privacy (MEV, surveillance, stealth addresses) for Solana. Privacy Chronicles: 5-episode series (70+ pages) on zero-knowledge proofs with 3D solar system in React Three Fiber and voice narration.

JavaScript Next.js React Three Fiber Solana TypeScript


Comic Pad NFT Publishing Platform on Hedera

Hedera Token Service | 50K+ Transactions | Presented at Hedera Web3 Africa Hackathon

Production NFT publishing platform for digital comics built solo end-to-end. Three tokenization models (full-issue, paginated, series collections), gas-optimized batch minting with 45% cost reduction, REST API handling 10K+ daily requests at <100ms response time, WebSocket server for real-time marketplace updates, and hybrid IPFS/Arweave storage with automatic failover. Presented to 200+ developers at Hedera Web3 Africa Hackathon.

Solidity TypeScript Next.js HTS IPFS Arweave Redis


Cybria Cross-Chain Bridge Validator Infrastructure

EVM-Compatible | Lock-and-Mint | Multi-Sig Consensus

Production validator infrastructure processing 100+ daily cross-chain transfers. Multi-layered validation pipeline preventing replay attacks, gas price oracle integration preventing failed transactions, circuit breakers for abnormal conditions, and real-time transaction indexing via The Graph. Leverages LayerZero and Axelar protocols.

Solidity Python Web3.py The Graph


TerraCred RWA Stablecoin Protocol

Hedera Hashgraph | Real-World Asset Tokenization | KYC/AML Compliant

Property-backed stablecoin with dual-token architecture (Property NFTs + yield-bearing tokens). KYC/AML compliance layer via zero-knowledge proofs, Dutch auction liquidation engine, dynamic interest rate model based on utilization curves, and automated accredited investor verification (Parallel Markets API).

Solidity TypeScript HTS HCS Oracle Integration


Achievements

  • Winner, Solana Privacy Hackathon - Privacy Chronicles: Glass Wallet interactive comic
  • Content Creation Track Winner, Zypherpunk Hackathon - Privacy Chronicles: 5-episode ZK privacy series (70+ pages)
  • 2nd Place, Seedify Hackathon - TruthBounty prediction market reputation protocol
  • Uniswap Hook Incubator (UHI7) Graduate - 15% acceptance rate, built Sentiment dynamic fee hook
  • Presenter, Hedera Web3 Africa Hackathon - Presented Comic Pad to 200+ developers
  • 3 critical vulnerabilities caught pre-deployment at DeFiConnectCredit with 95%+ test coverage
  • 35% gas cost reduction via assembly optimization in production contracts
  • Mentored 15+ blockchain developers through code reviews and workshops

Technical Stack

Smart Contracts Full-Stack Infrastructure
Solidity, Rust, Anchor TypeScript, React, Next.js PostgreSQL, Redis
Foundry, Hardhat Viem, Wagmi, Ethers.js The Graph, IPFS
ERC standards, Uniswap v4 Hooks Node.js, Express Docker, Tenderly

Chains: Ethereum, Base, Arbitrum, Optimism, BNB Chain, Hedera, Solana


Experience

Blockchain Engineer @ DeFiConnectCredit | Jan 2025 - Present

  • Production DeFi integration: Aave v3, Uniswap v3/v4, Curve, GMX
  • Foundry testing framework with 95%+ coverage, 3 critical vulnerabilities caught pre-deployment
  • 35% gas cost reduction through assembly optimization

Core Protocol Engineer @ TruthBounty | 2024 - Present

  • Architected integration across 13 prediction market platforms
  • Designed reputation algorithm and soulbound NFT system

Education & Training

  • Uniswap Hook Incubator (UHI7) Graduate, 15% acceptance rate
  • School of Solana (Ackee Blockchain) Rust & Anchor development
  • Cyfrin Updraft DeFi security, protocol engineering, auditing
  • BSc Physiotherapy University of Ibadan (2024)

Let's Connect

Open to: Smart Contract Engineering, DeFi Protocol Integration, Security Engineering, Web3 Infrastructure

Email LinkedIn GitHub

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  1. nocturne nocturne Public

    Nocturne: Private payments on Solana using stealth addresses (DKSAP), ZK proofs (Noir/UltraHonk), and TEE relays. Fixed-denomination privacy pools with 97% unlinkability. Deployed on Devnet.

    TypeScript

  2. TruthBounty TruthBounty Public

    TruthBounty: Decentralized reputation protocol for prediction markets. Track accuracy across PancakeSwap & Polymarket, earn soulbound NFTs, climb leaderboards with TruthScore, enable copy trading. …

    Solidity