Predrag A.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I’m a blockchain developer focused on Solidity, smart contracts, Ethereum, and EVM-compatible networks. I help clients build and integrate blockchain functionality, with an emphasis on clear code, maintainable implementations, and reliable Web3 interactions. What I can help with: • Solidity smart contract development and maintenance • Ethereum and EVM-compatible blockchain development • Web3 integration using Web3.js and Ethers.js • Connecting decentralized applications (dApps) to smart contracts • Debugging existing Solidity code and Web3 integrations Technologies: Solidity • Ethereum • EVM chains • Web3.js • Ethers.js • JavaScript I value clear communication, practical problem-solving, and code that is understandable and maintainable. I start by clarifying requirements and the expected behavior, then discuss an implementation approach and keep you informed as work progresses. If you need help developing a smart contract, integrating blockchain functionality into an application, or improving an existing Web3 implementation, let’s discuss your project and its requirements.