CertiK
The Premier Blockchain and Smart Contract Cybersecurity Company
Blockchain Security Expert – Chain Security Evaluation Track
Blockchain EngineerBlockchain EngineerFull TimeRemoteTeam 201-500Since 2018H1B No SponsorCompany SiteLinkedIn
Location
United States
Posted
117 days ago
Salary
$120K - $180K / year
EnglishDockerNode.jsPythonWeb3Go
Job Description
• Conduct in-depth security evaluations on blockchain nodes, validators, consensus mechanisms, mempool behavior, networking layers, and chain modules.
• Review and analyze blockchain frameworks such as Cosmos SDK, CometBFT, Geth, Hyperledger, and other L1/L2/L3 infrastructures.
• Identify security issues related to consensus safety, chain halting, permission models flaws, block production vulnerabilities.
• Implement and run custom scripts and test scenarios to simulate real-world validator/network behaviors, chain stress conditions, and edge cases.
Job Requirements
- 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 (e.g., Cosmos SDK / CometBFT, Go-Ethereum (Geth) internals, and Hyperledger Fabric / Besu)
- Strong scripting & 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.
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
- flexible paid time off and holidays
- variable commission program for business development sales roles
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