basemfawzy
Smart Contract Developer | Solidity Engineer |Blockchain Security Enthusiast
Smart ContractDeveloper with hands-on experience building, testing, and securing Ethereum-based applications using Solidity, Hardhat, Foundry, andEthers.js. Skilled in ERC20 and ERC721 token standards, comprehensiveunit testing andinvarianttesting, and deploying verifiedcontracts to Ethereum main net.
Experience: 2 years
Yearly salary: $100,000
Hourly rate: $70
Nationality: 🇪🇬 Egypt
Residency: 🇪🇬 Egypt
Experience
Smart Contract Developer
Upwork 2025 - 2026
Designed and implemented multiple smart contracts in Solidity, including ERC20 and ERC721 implementations. Built complete testing suites using Foundry, including fuzzing, invariant testing, and mainnet-fork simulations. Automated Hardhat deployments and verification workflows. Applied secure development practices and deployed smart contracts to Ethereum testnets.
Data Engineer / BI Developer
Exist BI 2018 - 2024
Delivered 200+ client projects across PowerBI, SQL, R, Python, and Azure. Created and instructed 600+ hours of analytical training. Built enterprise data pipelines and reporting solutions.
Skills
blockchain
blockchain-engineer
golang
nft
python
smart-contract
solidity
sql
english
arabic