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usetech-nick/README.md

Nishant Kumar

Smart contract developer moving into security research. Final-year B.Tech CSE student at KIET, based in Delhi NCR.

I build DeFi protocols in Foundry and I'm learning to break them.

Now

  • Working through Ethernaut and Damn Vulnerable DeFi, writing up each challenge in ethernaut-writeups
  • Applying to security fellowships and internships

Next

  • Audit contests (Code4rena, Sherlock, Cantina, CodeHawks)
  • Reproducing public exploits as Foundry fork tests
  • A public self-audit of Vault Garden

Selected work

Vault Garden: modular vault protocol on the EIP-2535 Diamond Standard. Factory and registry for per-user vaults, shared storage via delegatecall, unit, fuzz and invariant tests (128k+ calls).

Overcollateralized stablecoin: collateral management, minting, burning and liquidation, with Chainlink oracles and stale-price checks. Deployed on Sepolia, with unit tests and a handler-based invariant suite.

Skills

  • Smart contracts: Solidity, Foundry (fuzz and invariant testing), Echidna, Hardhat, Viem
  • Concepts: EVM, vaults, AMMs, proxy and diamond patterns, upgradeable contracts
  • Other: TypeScript, JavaScript, C++, React and Next.js, Node.js

Background

  • BuidlGuidl contributor
  • Encode Club EVM Bootcamp, Cyfrin Foundry Fundamentals, Alchemy University

LinkedIn · X

Pinned Loading

  1. ethernaut-writeups ethernaut-writeups Public

  2. vault-garden vault-garden Public

    Solidity

  3. foundry-defi-stablecoin foundry-defi-stablecoin Public

    Solidity

  4. crypto-savings-vault crypto-savings-vault Public

    TypeScript

  5. freelance-platform freelance-platform Public

    JavaScript