
Muhammad Hassan
Level 2
Expert Blockchain Developer: Tokens, Presale, Staking dApps
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Werkervaring
Blockchain Developer | Smart Contracts & Web3 Solutions
Upwork • ZZP
Sep 2025 - Present • 8 mos
Hands-on experience developing and deploying smart contracts and full-stack Web3 applications on EVM-compatible networks, including ERC20, ERC721, and ERC1155 standards. Extensive work on presale, ICO, and IDO systems featuring whitelisting, tiered allocations, vesting schedules, staking mechanisms, minting logic, refund handling, and secure multi-wallet fund collection. Strong emphasis on writing gas-optimized, secure, and audit-ready Solidity code using industry best practices, with end-to-end integration into React/Next.js applications via ethers.js and web3.js, including wallet connectivity (MetaMask, WalletConnect, TronLink), admin dashboards, contract management tools, and deployment workflows using Hardhat and Foundry.
116 Reviews
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mobindee
Terugkerende klant

Bangladesh
Great experience working with him. Very skilled in blockchain development and smart contracts. Delivered everything on time with clean and secure code. Communication was smooth throughout. Highly recommended for any Web3 or token-related project.
Reactie van de freelancer
abdul_wahab1233

Pakistan
mobindee
Terugkerende klant

Bangladesh
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mideals24
Terugkerende klant

Kameroen
He is really good at what he does. Quick and flexible. Excellent to work with.
perfectyou

Canada

