Smart Contract Security Auditor: Defend DeFi & Contracts

MixBytes; United States; Remote; USD 90,000 - 150,000; Full time

Job summary

MixBytes is seeking a seasoned smart contract security auditor to join our audit team. You will audit Solidity contracts, identify flaws, and write PoC tests to demonstrate vulnerabilities. The role focuses on using automated tools and delivering clear, actionable recommendations to clients.

You’ll work with a team that values a hacker mindset and rigorous analysis, applying cryptography, security, and EVM knowledge to complex DeFi protocols. English documentation is required.

Qualifications

• > Must have Solidity smart contract auditing experience or >10,000 lines reviewed.
• ">2+ years of development in languages like C/C++, C#, Rust, Java, Python, Go, Solidity or Vyper.
• ">Proficiency with auditing tools Slither, Echidna, Foundry, or Hardhat.
• ">Deep knowledge of Solidity, Vyper, DeFi protocols and the Ethereum Virtual Machine (EVM).
• ">Strong mathematical and problem‑solving skills; clear audit reporting in English.

Responsibilities

• Audit smart contracts to uncover logical flaws, vulnerabilities and inconsistencies.
• Use automated tools to streamline and enhance the auditing process
• Write PoC tests to demonstrate vulnerabilities
• Provide clear, actionable recommendations to address identified issues

Skills

Hacker mindset

Solidity auditing

Code review 10k+ lines

Development experience (2+ yrs)

EVM/Smart contracts

Mathematical problem solving

English documentation

Memory/concurrency understanding

Algorithms & cryptography

Security mindset

Tools

Slither

Echidna

Foundry

Hardhat

Job description

MixBytes is seeking a seasoned smart contract security auditor to join our audit team. You will audit Solidity contracts, identify flaws, and write PoC tests to demonstrate vulnerabilities. The role focuses on using automated tools and delivering clear, actionable recommendations to clients.

You’ll work with a team that values a hacker mindset and rigorous analysis, applying cryptography, security, and EVM knowledge to complex DeFi protocols. English documentation is required.