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Solidity smart contracts & dApp back-ends for EVM chains
Service description
I am a blockchain developer who has spent the last several years living inside the Ethereum ecosystem, and I write Solidity the way it was meant to be written: carefully, defensively, and with the assumption that real money will pass through every line. My work covers the full contract lifecycle, from the first architecture sketch on a whiteboard to the deployment transaction on mainnet and the monitoring that comes after. I have shipped ERC-20 and ERC-721 tokens, staking and vesting logic, on-chain marketplaces, multi-signature treasuries and the off-chain back-ends that tie a decentralized application together, so I know where the sharp edges are before a project runs into them.
My approach is test-first and security-first. Every contract I deliver ships with a complete suite in Hardhat or Foundry, covering the happy paths, the boundary cases and the adversarial scenarios that auditors look for, and I gladly walk you through the reasoning behind each check. I follow the checks-effects-interactions pattern, guard against reentrancy and integer traps, lean on battle-tested OpenZeppelin building blocks rather than reinventing them, and treat gas as a first-class concern by measuring storage layout, loops and calldata rather than guessing. When your app needs an off-chain component, I build reliable event indexers, transaction relayers and API layers that speak to the chain through ethers.js or web3.js and stay honest about finality and reorgs.
I communicate in plain language, deliver readable and documented code, and prepare contracts so that a third-party audit becomes a formality rather than a rescue mission. Whether you are launching a token, wiring up a DeFi mechanism or connecting a front-end to a chain, I can own the smart-contract side end to end.
— Solidity smart contracts: ERC-20, ERC-721, ERC-1155, staking, vesting, multisig
— Testing in Hardhat and Foundry with full coverage and fuzzing
— Gas optimization and storage-layout tuning
— Security hardening: reentrancy, access control, safe math patterns
— dApp back-ends: event indexing, relayers, ethers.js / web3.js integration
— Deployment and verification on Ethereum, Polygon, BSC, Arbitrum and other EVM chains
My approach is test-first and security-first. Every contract I deliver ships with a complete suite in Hardhat or Foundry, covering the happy paths, the boundary cases and the adversarial scenarios that auditors look for, and I gladly walk you through the reasoning behind each check. I follow the checks-effects-interactions pattern, guard against reentrancy and integer traps, lean on battle-tested OpenZeppelin building blocks rather than reinventing them, and treat gas as a first-class concern by measuring storage layout, loops and calldata rather than guessing. When your app needs an off-chain component, I build reliable event indexers, transaction relayers and API layers that speak to the chain through ethers.js or web3.js and stay honest about finality and reorgs.
I communicate in plain language, deliver readable and documented code, and prepare contracts so that a third-party audit becomes a formality rather than a rescue mission. Whether you are launching a token, wiring up a DeFi mechanism or connecting a front-end to a chain, I can own the smart-contract side end to end.
— Solidity smart contracts: ERC-20, ERC-721, ERC-1155, staking, vesting, multisig
— Testing in Hardhat and Foundry with full coverage and fuzzing
— Gas optimization and storage-layout tuning
— Security hardening: reentrancy, access control, safe math patterns
— dApp back-ends: event indexing, relayers, ethers.js / web3.js integration
— Deployment and verification on Ethereum, Polygon, BSC, Arbitrum and other EVM chains
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