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Developed Solidity smart contracts for Gearbox Credit Accounts using Hardhat and OpenZeppelin to enable composable leverage, allowing users to borrow and interact with multiple DeFi protocols in atomic transactions. Designed and deployed modular adapters in Solidity and integrated them with Aave, Uniswap V3, Curve, and Yearn to support leveraged farming, lending, and token swaps within the protocol. Built a real-time liquidation engine using Chainlink oracles and custom Solidity logic to monitor account health and trigger secure liquidations of undercollateralized positions. Implemented backend indexing with The Graph, PostgreSQL, and Ethers.js (TypeScript) to surface on-chain Credit Account activity for dashboards, trade history, and risk monitoring.

Upgraded Solidity smart contracts for Tetu V2 migration, integrating StrategySplitterV2 to enable dynamic multi-strategy yield farming and deployed vault insurance mechanisms using OpenZeppelin upgradeable proxies and Hardhat tooling. Enhanced veTETU governance by implementing vote-weighted emission controls, bribe distribution modules, and reward boosting logic, leveraging Ethers.js and The Graph for on-chain data indexing and frontend integration. Developed liquid staking vaults(tetuBAL and tetuQi), ensuring composability with yield strategies and automating management tasks with Chainlink Keepers for reliable execution. Architected on-chain swap functionalities within vaults, optimizing token conversion routes and liquidity utilization across Polygon DEXes to increase capital efficiency and improve user experience.

Crafted and deployed the FARM governance and utility token in Solidity, incorporating minting, staking, and on-chain reward distribution consistent with Harvest’s tokenomics. Engineered and enhanced vault and strategy contracts to automate yield optimization, handle user deposits and withdrawals, and execute multi-protocol harvesting across Ethereum and Layer 2 networks. Developed and connected the full application stack, integrating a React/TypeScript frontend with a Node.js backend and The Graph subgraph for real-time vault analytics, staking management, and protocol state indexing.

Built and maintained core features for Meridio, a blockchain-based fractional real estate platform, integrating Ethereum smart contracts with React frontends and Node.js/Express backends. Collaborated with cross-functional teams to deliver the Grid+ energy marketplace, implementing blockchain-enabled peer-to-peer energy trading and payment solutions on the Ethereum network. Integrated several third-party Web3 services into the company’s products, enhancing decentralized functionality and bridging traditional systems with blockchain solutions.