Fenix

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Blockchain and Python engineer building production smart contracts and the automation around them. Solidity: UUPS-upgradeable vaults, EIP-1167 minimal-proxy factories, EIP-712 signed flows, Chainlink Automation and CCIP cross-chain, all covered by Foundry unit, fuzz and invariant tests. Off-chain: Python services and exchange API integrations (ccxt), trading and alert bots, multi-agent LangGraph pipelines, plus React and ethers.js dApp front-ends when a project needs the full stack. Building production backend systems since 2017 and, more recently, on-chain contracts. That includes live crypto infrastructure handling real capital across Binance, Bybit, OKX, MEXC and Deribit, so I understand real-time data, edge cases and the failure modes that break code in production. I ship clean, documented, tested code and a deployed 24/7 service, not a prototype. Fast start, clear async communication, payment in USDT.