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AlexScherbatyuk/README.md

Hi there 👋, I'm Alex Scherbatyuk

About Me

Smart contracts security researcher and blockchain developer. With a proven ability to detect and report critical vulnerabilities across a wide range of blockchain platforms, and develop smart contracts for airdrops, DeFi, NFTs, Stablecoins, Rebase tokens, including upgradable proxy contracts and interoperability contracts based on Chainlink CCIP. Strictly follow CEI & FREI-PI patterns, backed by intensive fuzz/invariant testing (Foundry, Echidna and Medusa) and static analysis.

Technical Expertise

Main

  • Languages: Solidity
  • Platforms: EVM
  • Focus Areas: Smart contract security and development

Secondary

  • Languages: Rust, Move, TypeScript, JavaScript
  • Platforms: Solana, SUI, Mina
  • Focus Areas: Blockchain protocols and decentralized applications development

Contact Me

Experience

  • May 2025-present: Blockchain full-stack developer at zkNoid
  • September 2024 - May 2025: Blockchain full-stack developer at ChopChop
  • May 2016 - August 2024: Senior Siebel Architect at Siblion

Highlights

  • Developed smart contracts for DeFi, NFTs, Stablecoins, Rebase tokens, DAOs, Lottery.
  • Multiple top findings in Codehawks' First Flight audit contests.
  • Developed cross-chain interoperability solutions using Chainlink CCIP.
  • Built upgradable proxy contracts and advanced DeFi primitives.
  • Conducted code reviews as a CRM architect for over 6 years.

Research & Articles

Cources & Bootcamps

Cyfrin Updraft Achievements

  • Rust Programming Basics
  • Uniswap V4
  • Uniswap V2
  • Advanced Web3 Wallet Security
  • Advanced Foundry
  • Solidity Smart Contract Development
  • Chainlink Fundamentals
  • Blockchain Basics

Audit Contests: First Flight

Contest Found Date Platform Blockchain Language Category
BriVault 2 High November 2025 Codehawks EVM Solidity Vault
Company Simulator 1 Medium October 2025 Codehawks EVM Vyper DeFi
Raisebox Faucet 2 High, 2 Medium October 2025 Codehawks EVM Solidity Faucet
Bid Beasts 2 High, 2 Medium, 1 Low September 2025 Codehawks EVM Solidity Marketplace Auction
Secret Vault on Aptos 1 High, 1 Low August 2025 Codehawks Aptos Move Vault
Last Man Standing 1 Medium, 1 Low August 2025 Codehawks EVM Solidity Onchain Game
BeatLand Festival 1 Medium July 2025 Codehawks EVM Solidity Marketplace
OrderBook 1 High July 2025 Codehawks EVM Solidity Peer-to-peer Trading system

First Flight Audit Reports

Web3 Contests

Contest Year Description Protocol Winning place
EthGlobal Unite DeFi 2025 Atomic Swap cross-chain protocol based on 1inch EVM and SUI 1inch none
Chainlink Chromion 2025 Cross-chain DeFi protocol Chainlink CCIP none
EthGlobal Bangkok 2024 Low code DeFi platform with zero-knowledge proofs Vlayer 2nd place
EthGlobal Singapore 2024 Mobile web3 cross-chain financial application 1inch 1st place
EthGlobal Online 2024 EVM based veterinary record register Envio none

Pinned Loading

  1. chainlink-decup-protocol chainlink-decup-protocol Public

    The Decentralized Cup of Assets (DeCup) is a Web3 protocol that enables seamless cross-chain trading of multi-asset bundles represented as NFTs, powered by Chainlink CCIP. It simplifies portfolio m…

    TypeScript

  2. foundry-cross-chain-rebase-token foundry-cross-chain-rebase-token Public

    A cross-chain rebase token protocol where users deposit ETH into a vault to mint RBT 1:1; balances grow linearly over time based on a per-user snapshot rate, and CCIP bridging burns/mints while pre…

    Solidity

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

    A DeFi protocol implementing an algorithmic stablecoin system designed to maintain a 1:1 peg with the US Dollar through overcollateralization and algorithmic stability mechanisms.

    Solidity

  4. foundry-merkle-airdrop foundry-merkle-airdrop Public

    This contract is used to distribute tokens to a whitelist of addresses based on a Merkle root. Includes mitigation for second-preimage attacks.

    Solidity

  5. foundry-account-abstraction foundry-account-abstraction Public

    A comprehensive implementation of Account Abstraction (AA) on both Ethereum and zkSync Era, built with Foundry. This project demonstrates how to create, deploy, and interact with smart contract acc…

    Solidity 1

  6. foundry-uups-proxy foundry-uups-proxy Public

    A comprehensive demonstration of smart contract upgradeability patterns using Foundry, featuring UUPS (Universal Upgradeable Proxy Standard) and custom proxy implementations.

    Solidity