potolski

Blockchain engineer building decentralized risk management infrastructure for Web3: automated, trustless insurance coverage for digital assets without intermediaries. Responsibilities: - Redesigned the smart contract architecture for scalability, security, interoperability, and gas efficiency - Owned protocol design, Solidity implementation, and cross-chain integration - Used Claude Code, Codex, and Cursor for contract analysis, test generation, and gas optimization Key contributions: ▸ Contributed to systems covering $20M+ in underwriting capacity ▸ Delivered architectural improvements that enhanced protocol scalability and reduced gas costs ▸ Pitched Lunos to investors at Ethereum's biggest conference (DevCon) Stack: Solidity · Hardhat · Foundry · TypeScript · multi-chain deployment

Senior blockchain engineer focused on smart contract design and implementation for Syscoin-ecosystem initiatives. Including reinsurance (UnoRe) and on-chain KYC / DID infrastructure. Responsibilities: - Owned smart contract design, implementation, testing, and deployment for ecosystem projects - Translated product requirements into on-chain architecture and gas-optimized implementations Key contributions: ▸ Pegasys.fi (Uniswap v3 + Aave forks on Syscoin & Rollux) • Managed DeFi protocol engineering and delivered Aave extensions • app.pegasys.fi · github.com/pegasys-fi ▸ Lunos — core smart contracts (https://lunos.xyz) • Designed and implemented core contracts for decentralized reinsurance • Led integration with EigenLayer's AVS (Actively Validated Services) ▸ On-chain KYC / DID (unreleased) • Built a Decentralized Identity solution integrated with KYC providers to resolve primary and secondary NFT sale compliance on-chain Stack: Solidity · TypeScript · Hardhat · Foundry · multi-chain · DeFi

Designed, implemented, and deployed three production smart contract systems for NFT-focused clients. Responsibilities: - Owned end-to-end smart contract development, design, implementation, testing, and deployment - Collaborated with client product teams to translate requirements into on-chain architecture Key contributions: ▸ Proof-of-attendance NFT drop • Distributed to attendees of client's online event • Deployed to Polygon Mainnet ▸ NFT collection with packs-and-cards mechanics • 1,400+ tokens minted on Ethereum Mainnet • Contract: 0x03011babdf78d67169e2b631d5c8f85a98b54f30 ▸ Custodial wallet dedicated to client's NFT drops • Private deployment Stack: Solidity · TypeScript · Hardhat · Ethereum · Polygon

Led multi-disciplinary teams across blockchain, fintech, and platform engineering projects while contributing to the company's strategic growth. Responsibilities: - Managed engineering teams across multiple concurrent client projects - Ran delivery, sprint planning, and client communication - Contributed hands-on to blockchain and backend engineering work Key contributions: ▸ Blockchain upgrade — Epic Cash (epic.tech) • Managed the team upgrading the Epic Cash blockchain (MimbleWimble protocol, Rust-based Grin fork) from v2.17 to v3.0 ▸ NFT / Royalty engineering — Royalty Exchange (royaltyexchange.com) • Added NFT minting support with ERC-721 + ERC-2981 (on-chain royalty standard) • Deployed production contracts to Ethereum Mainnet ▸ Crypto prime brokerage — asset manager client • Core contributor on APIs for streaming market data, order routing, and asset transfers between custody and whitelisted exchanges • Built API clients for Kraken, Gemini, and other venues • Full automated test coverage ▸ Social-media analytics platform — FEE.org • Led team maintaining and extending a C# analytics platform (github.com/Jellyfish-Insights) ▸ Internal startup incubation • Business model design, international sales meetings, risk analysis, documentation • Managed a team of 6 across marketing, sales, and development Stack: Solidity · Rust · C# · TypeScript · Ethereum · F#