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Blockchain Security Expert - Chain Security Evaluation Track

1 month, 3 weeks ago
United States
Full-time
Senior
Security Engineer
Cybersecurity
Bash Blockchain Docker Go Penetration Testing Python
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CertiK

CertiK

$152M raised
View All Jobs 22

Description

  • Conduct in-depth security evaluations of blockchain nodes, validators, consensus mechanisms, mempool behavior, networking layers, and chain modules.
  • Review and analyze blockchain frameworks such as Cosmos SDK, CometBFT, Go-Ethereum (Geth), Hyperledger Fabric/Besu, and other L1/L2/L3 infrastructures.
  • Identify and document security issues related to consensus safety, chain halting, permission model flaws, and block production vulnerabilities.
  • Implement, run, and maintain custom scripts and test scenarios to simulate validator/network behaviors, chain stress conditions, and edge cases.
  • Perform security consulting, manual audits, verification of smart contracts and blockchains, and penetration testing as part of CertiK’s security offerings.
  • Collaborate with the security team to deliver and expand CertiK’s security products and services.
  • Engage directly with clients to communicate findings, support remediation, and scope security engagements.
  • Monitor emerging blockchain security problems and industry trends to inform assessments and product improvements.

Requirements

  • Authorization to work in the United States and ability to work remotely (US-based role).
  • Strong written and spoken English communication skills.
  • High diligence and strong attention to detail, especially in multi-step testing and long-running experiments.
  • Solid understanding of blockchain architecture and node internals (examples: Cosmos SDK/CometBFT, Go-Ethereum/Geth, Hyperledger Fabric/Besu).
  • Strong scripting and automation skills with Python or Bash.
  • Familiarity with Docker and containerized testing environments.
  • Prior experience in manual Web3 security auditing is preferred but not required.
  • Self-starter comfortable working in a startup environment, wearing multiple hats, and collaborating with cross-functional teams and clients.

Benefits

  • Target US salary range $120,000–$180,000 (exact offer determined by skills and experience).
  • Medical, vision, and dental insurance.
  • 401(k) plan with company matching.
  • Life and accidental death and dismemberment (AD&D) insurance, HSA (with high-deductible plan), and FSA.
  • Flexible paid time off and holidays and a flexible remote work environment.
  • Opportunity to collaborate with industry-leading security researchers and technologists and to shape conversations in blockchain security.

Interested in this position?

Apply directly on the company website

Apply Now

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