HARSH

P2P Lending & Borrowing Protocol: Architected and shipped core decentralized credit markets featuring automated dual price-based and time-based liquidation mechanisms to protect protocol capital.

Yield-on-Spend Treasury Router: Engineered automated routing contracts that deploy users' idle balances into audited yield protocols, with instant just-in-time liquidity unwrapping upon card spend.

Gasless User Onboarding: Integrated smart account abstraction with custom paymaster infrastructure, delivering a seamless 100% gasless transaction experience.

Security & Invariants: Formulated property-based invariant test suites and conducted protocol audits to eliminate reentrancy and protect capital.

21+ Production Contracts: Engineered and deployed smart contracts from scratch covering lending markets, time-locked vaults, auctions, and token standards.

Token Vesting Engine: Implemented multi-beneficiary cliff periods and linear unlock schedules with complete event logging and NatSpec documentation.

NFT Dutch Auction: Built declining-price auction contracts with atomic minting and automatic buyer excess-refund mechanics.

Commit-Reveal Lottery: Implemented a trustless multi-party randomness protocol ensuring verifiable on-chain fairness.

Vulnerability Hunting: Audited web application architectures and hunted vulnerabilities across production FinTech platforms, establishing an adversarial zero-trust mindset.

Security Analysis: Identified authentication bypasses, race conditions, and business logic flaws across complex multi-user state machines.

Full-Stack Development: Engineered web application interfaces with React.js, integrating complex UI states with secure backend architectures.