Ignacio – Solidity, Smart contracts, Ethers.js

Custom Claude Code workspace for a marketing agency.

• Built a Claude Code workspace running the agency's day-to-day operations for hospitality clients.
• Automated Google Business Profile and TripAdvisor review replies, monthly Metricool social reports delivered by Gmail, and weekly newsletter creation.
• Orchestrated Metricool, Google Workspace, and GBP API v4 through MCP servers.
• Used Playwright MCP as a fallback for platforms without a public write API.
• Shipped the solution as a cross-platform tarball installer so non-technical teammates could be onboarded in one command.

AI-powered companion platform with on-chain DeFi.

• Architected the technical architecture and delivered full-stack development of a cross-platform app combining AI-powered companionship agents with on-chain DeFi.
• Architected a token-per-AI-character launch system integrating Clanker and custom Uniswap V4 liquidity curves.
• Built gasless, one-tap wallet UX for AI interactions using Privy embedded wallets, EIP-7702 delegation, and ERC-7579 smart accounts.
• Integrated cross-chain swap protocols enabling users to execute trades across Base, Solana and BNB from a single interface.
• Developed smart contract and wallet infrastructure across EVM chains and Solana.
• Integrated third-party data availability and analytics services for real-time token data and cross-chain swap execution.

L1 blockchain.

• Led engineering from Devnet through Testnet to Mainnet launch and successful TGE.
• Served as the main technical point of contact for 60+ ecosystem projects.
• Developed the Somnia Core Protocol, including staking and validation committee components.
• Led the audit process and remediation with external auditing companies.
• Drove foundation vesting audits.
• Designed the Quest Platform, a pluggable and sybil-resistant incentivization engine automating user engagement across social and on-chain verification.
• Managed the team and projects for a team of 5 engineers.

Metaverse infrastructure.

• Architected Web3 projects according to client specifications.
• Programmed smart contracts on the EVM stack using Solidity.
• Implemented integrations with front-end and back-end systems.
• Implemented a DAO treasury contract and governance system for the Metaverse protocol.
• Developed cross-chain ERC-6551 identity prototypes and dynamic metadata NFT contracts.
• Built an NFT marketplace prototype, including contracts and backend for Unreal game integration.

NFT platform.

• Participated as a first-stage co-founder during incubation at Station F in Paris.
• Designed and implemented the prototype for the company's first products across front-end and smart contracts.
• Developed and launched the Forge prototype.
• Integrated AI image generation for on-the-fly NFT metadata creation.
• Implemented user-generated NFT contracts via Beacon Proxy patterns.
• Led and coordinated the external development team.
• Liaised with external contractors to complete new product developments.

Independent Web3 development work.

• Focused on NFT development with Solidity smart contracts for EVM-compatible blockchains.
• Built front-end applications with React.
• Developed single-page NFT minting sites using ethers.js.
• Consulted on NFT projects.
• Built NFT marketplace contracts with upgradeable proxies, Merkle-tree whitelisting, and dynamic reveal mechanics.
• Delivered full-stack Web3 applications with React and ethers.js across Ethereum, Polygon and BSC.