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Blockchain Security Expert - Security Audit Track

CertiK· Blockchain Security Engineering
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Hybrid (US / Remote)$120k - $180kFull-timePosted 7mo ago

About the role

Security Engineer focused on CertiK’s security-related services, including consulting, reviews, auditing, verification, and testing of blockchain systems and smart contracts, with opportunities to engage clients and expand security offerings.

Responsibilities

  • Perform end-to-end security services, including consulting, reviewing, auditing, verifying, testing, and delivering detailed security assessments for blockchain systems such as smart contracts, web3 protocols, L1/L2/L3 infrastructures, and dApps.
  • Conduct comprehensive manual code reviews to identify vulnerabilities, logical flaws, economic attacks, and non-obvious edge cases across Solidity, Golang, Rust or other blockchain languages.
  • Develop and refine threat models and attack surfaces, covering economic, technical, operational, and trust-assumption risks for blockchain protocols.
  • Design and execute security tests, including property-based testing and gas-related analysis.

Qualifications

  • Bachelor's degree in Security, Computer Science, Mathematics, Physics, and Engineering
  • The ability to efficiently triage and juggle multiple priorities and deadlines.
  • Specialist-level knowledge of cybersecurity and security auditing. Can write and deploy smart contracts/blockchain infrastructure and write tests with frameworks.
  • Familiar with classic attack vectors and vulnerabilities such as reentrancy, sandwich attacks, overflow/underflow
  • The ability to effectively communicate with the clients and internal team, both verbally in English and in writing, about security services and requirements.
  • [Preferred] Prior hands-on security auditing experience.

Skills

Required:Security auditingManual code reviewThreat modelingSecurity testing

Benefits

  • medical, vision, and dental insurance
  • 401(k) plan with company matching
  • life and accidental death and dismemberment insurance
  • HSA (with high deductible plan), FSA, and other benefits to all full-time employees
  • flexible paid time off and holidays
  • variable commission program for business development sales roles
Last updated Oct 23, 2026. Interested? Apply on the company site.

About CertiK

Largest Blockchain Security Auditor - CertiK

CertiK, the largest Web3 security service provider, uses AI and formal verification to protect and monitor smart contracts and protocols, securing the Web3 ecosystem.

Smart Contract AuditSmart Contract SecurityDeFiBlockchain AuditCrypto SecuritySecurity Audit
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