open to freelance & remote roles · Argentina (UTC-3)
Leandro Labiano. Smart contract developer and auditor. I ship fully on-chain games, DeFi tooling, trading bots and LLM agents — from contract to production.
AI personas that write like a real person. Feed it WhatsApp chats and it learns how someone talks — then answers a business's customers on WhatsApp with that voice, the business's rules and its hours. Built solo, from chat parser to WhatsApp Cloud API.
A fully on-chain gambling platform: every bet, outcome and payout settles in contracts — no off-chain house.
Co-founded and ran tech. On-chain casino games on World Chain's mini app store — Crash, Flip, RPS, Wheel, King, The Box. 100k+ users. Wrote and audited every contract and led delivery end to end.
Biggest team I've worked in. Designed the game's on-chain economy — NFTs, skins, shop, auction house, refinement — then built the marketplace front end.
Real-world asset memberships: each NFT is a night's stay in partner properties. Built the team, the contracts and the multi-chain migration.
Building an AI persona platform that turns WhatsApp chat exports (text and voice notes) into personas that answer a business's customers on WhatsApp. Next.js, TypeScript, Supabase, DeepSeek and Groq Whisper; versioned personas, per-plan usage metering and an inbox where the owner approves drafts or takes over.
Co-founded a blockchain gaming startup and ran all of tech. Shipped 4 games on World Chain's mini app store, frontend and contracts. 100k+ users and 2M+ in on-chain volume.
Designed the game's on-chain systems: NFTs, in-game skins, shop, auction house and a refinement system (Solidity, Hardhat, Scaffold-ETH, IPFS). Then built the Web3 marketplace front end — login, inventory, wallet and contract integration with Next.js, Tailwind, Thirdweb and ethers.js.
First public audit competition: One World Project. Finished Top 5 among participating auditors.
Built the team, led web development and wrote the contracts. Launched the product and migrated it across networks to the main chain.
Hired to audit; found and fixed critical vulnerabilities in production. Then built every contract for their NFT game: marketplace, token, staking and locking.
Built Educaverse's custom token and pre-sale contract, plus the pre-sale front end in JavaScript and Web3.js.