{"name":"Lucas Barcelos","title":"AI Fullstack Engineer · Blockchain · Multi-Agent Systems","summary":"Engineer with ten years in blockchain and protocol development and six years building regulated financial infrastructure in Banking as a Service. Over the last four years my work has focused on production LLM applications: agent runtimes, multi-agent systems, AI SDKs, and autonomous workflows.","location":"Brazil","remote":"Remote worldwide","experience":[{"title":"LLM Applications and Agent Infrastructure","period":"Last 4 years","points":["Architecture for production LLM applications, agent runtimes, and autonomous workflows.","Context engineering, tool calling, and structured outputs.","Multi-agent systems and the coordination layer between agents.","Evaluation infrastructure and semantic retrieval.","AI SDKs and developer tooling.","Blockchain AI applications supporting autonomous agents on Solana, Ethereum, NEAR, Sui, and Cardano."]},{"title":"Blockchain and Protocol Engineering","period":"10 years","points":["EVM layer 1 networks: chain configuration, node operation, and the contract layer above it.","EVM layer 2 networks, including bridging, fee, and settlement behavior.","Non-EVM chains with different account, execution, and fee models.","Bitcoin forks: consensus parameters, node builds, and supporting tooling.","AMMs and DeFi primitives: pricing, liquidity, routing, and position accounting."]},{"title":"Fullstack Engineering, Banking as a Service","period":"6 years","points":["Banking as a Service platforms built on core banking rails.","Backend services for accounts, payments, and transaction flows.","Customer-facing and internal interfaces over those flows.","Auditability, idempotency, and reconciliation in regulated financial systems."]}],"skills":["Solidity","TypeScript","React/Next.js","Rust","Node.js","GraphQL","Hardhat","Foundry","Web3.js","Ethers.js","Wagmi/Viem"],"aiEngineering":["Context engineering","tool calling","structured outputs","agent harnesses","evaluation infrastructure","semantic retrieval","multi-agent orchestration"],"networks":["Ethereum","BSC","Polygon","Arbitrum","Optimism","Avalanche","Base","Solana","TON","Fantom","Matchain"],"education":{"degree":"Systems Analysis and Development","level":"Technologist degree"},"contact":{"telegram":"https://t.me/lucxsweb3","github":"https://github.com/lucxsdev2"},"url":"https://lucasbarcelos.com/resume"}