Deep understanding of blockchain protocols , cryptographic principles , and distributed ledger technologies .
Proven experience in smart contract development using Solidity , Rust , or similar.
Hands-on experience with Ethereum , Polygon , Hyperledger Fabric , or similar platforms.
Familiarity with tools such as Truffle , Hardhat , Ganache , Remix , etc.
Solid grasp of tokenomics , DeFi models , DAOs , and NFT standards (ERC-721 / 1155) is a plus.
Ability to guide full SDLC of blockchain projects – from PoC to production.
Strong problem-solving skills and stakeholder communication abilities.
Blockchain Architect • Kraków, Poland