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harshil thummar
From India 06:50 PM (GMT+05:30)
$30/hr or $4,500/yr
Active 1 hour ago
Member since Aug 2026

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senior blockchain developer

Blockchain Developer
Available for hire
Years of experience
4+ years
Experience level
Senior
Available for
Full-time

I'm a Blockchain Developer with 4+ years of experience building secure smart contracts, Web3 applications, and scalable backend systems. My expertise includes Solidity, Node.js, Hardhat, Foundry, Ethers.js, Web3.js, and Ethereum/EVM-compatible networks. I've developed DeFi protocols, staking platforms, NFT marketplaces, token contracts (ERC-20, ERC-721, ERC-1155), escrow systems, and blockchain integrations with a strong focus on security, gas optimization, and clean architecture.

I'm looking for long-term remote opportunities where I can contribute to building production-ready Web3 infrastructure, backend services, and decentralized applications while collaborating with talented engineering teams to deliver secure and scalable blockchain products.

Skills

Solidity React.js Next.js Node.js Web3 Ethers.js Smart Contract

Languages

English

Employment History

senior blockchai developer at wimraw 2023 - 2026
* Designed, developed, and deployed secure Solidity smart contracts for DeFi, NFT, tokenization, and Web3 applications. * Built and maintained blockchain backends using Node.js, Express.js, and Ethers.js/Web3.js for seamless smart contract integration. * Developed ERC-20, ERC-721, and ERC-1155 token standards, staking systems, escrow contracts, NFT marketplaces, and token sale platforms. * Performed smart contract security reviews, vulnerability analysis, gas optimization, and comprehensive testing using Hardhat and Foundry. * Architected scalable APIs and integrated blockchain services with modern web applications built using React and Next.js. * Led technical design discussions, reviewed code, mentored junior developers, and established secure development best practices. * Collaborated with cross-functional teams to deliver production-ready decentralized applications on Ethereum and other EVM-compatible networks. * Managed deployments, upgrades, and maintenance of blockchain infrastructure while ensuring performance, reliability, and security.

Education

bachelor of computer application at P.P Savani University 2020 - 2023
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