Olusola A.

Blockchain Developer | Web3 | Ethereum | Solidity/Rust Smart Contracts

Full Stack Blockchain Developer | Ethereum | Solidity | Rust | Solana | EVM | Web3 Looking for a secure, gas-optimized smart contract or a reliable Web3 application? I help Web3 founders, startups, and technology companies build, modify, integrate, test, optimize, and deploy production-ready blockchain solutions across Ethereum, Solana, and EVM-compatible networks. From smart contract development and DApp development to blockchain integration, wallet integration, testing, security review, gas optimization, and mainnet deployment, I build blockchain products focused on security, scalability, reliability, and real-world usability. My expertise includes Solidity smart contracts, Rust/Solana programs, EVM development, Web3.js, Ethers.js, Anchor, Next.js DApps, NFTs, token development, DeFi applications, APIs, RPC, WebSockets, and blockchain integrations. I specialize in developing and improving real blockchain products — not just prototypes. Whether you need a new smart contract, an existing contract fixed or modified, a Web3 application integrated with blockchain infrastructure, or a Solana program developed and deployed, I can help take your project from development and testing to mainnet. My Blockchain Development Services: Smart Contract Development: Solidity smart contracts. ERC-20, ERC-721, ERC-1155 token development. Token creation and deployment. Staking, vesting, governance, and reward systems. Smart contract testing, debugging, security review, and optimization. Gas optimization. Contract verification and mainnet deployment. Existing smart contract fixes and modifications. Ethereum & EVM Development: Ethereum and EVM blockchain development. Polygon, BNB Chain, Arbitrum, Optimism, and Base. EVM smart contracts and Layer 2 solutions. Blockchain and Web3 integrations. RPC and on-chain data integration. Wallet and transaction integrations. Web3 DApp Development: Full-stack decentralized applications. React.js / Next.js Web3 applications. Node.js backend development. Web3.js and Ethers.js integration. MetaMask, WalletConnect, and Phantom wallet integration. Blockchain-powered dashboards and platforms. API and real-time blockchain integrations. DeFi Development: Decentralized exchanges (DEX). Non-custodial applications. AMM and liquidity systems. Staking and yield farming platforms. DAO and governance systems. DeFi applications and integrations. Solana Development: Solana programs using Rust and Anchor. SPL token development. Solana blockchain integrations. Solana RPC and wallet integrations. Phantom wallet integration. Testing and mainnet deployment. How I Work: Understand → Build → Test → Optimize → Review → Deploy I first understand your requirements and technical goals, then build or review the required blockchain components. For existing projects, I can work with your current smart contracts, DApps, codebase, or blockchain infrastructure to identify issues, implement modifications, integrate new functionality, test the solution, and prepare it for deployment. My Top Technologies: Blockchain: Ethereum | EVM | Solana | Polygon | BNB Chain | Arbitrum | Optimism | Base. Smart Contracts: Solidity | Rust | Anchor | ERC Standards | SPL Tokens | OpenZeppelin. Web3: Web3.js | Ethers.js | WalletConnect | MetaMask | Phantom. Frontend/Backend: React.js | Next.js | Node.js | APIs | RPC | WebSockets | Blockchain Integrations. If you are building a Web3 startup, launching a blockchain product, developing a DeFi application, modifying an existing smart contract, integrating blockchain into an existing platform, or need an Ethereum/EVM or Solana developer, I can help you build, improve, test, and deploy your solution.