Blockchain Security Expert - Chain Security Evaluation Track
CertiK secures Web3 projects by providing blockchain security audits, formal verification, and AI-powered monitoring services.
Funding history
Projects
About CertiK
CertiK helps blockchain developers secure Web3 projects by providing comprehensive security audits, formal verification, and AI-powered monitoring. Users can audit smart contracts, monitor on-chain activity, and ensure regulatory compliance. CertiK combines academic research with enterprise-grade security solutions.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will perform in-depth security evaluations of blockchain nodes, validators, consensus mechanisms, mempool behavior, networking layers, and chain modules. You will review and analyze blockchain frameworks (for example Cosmos SDK, CometBFT, Geth, Hyperledger), implement and run custom scripts and test scenarios, simulate validator and network behaviors, and identify chain-level vulnerabilities. You will use scripting and automation to create repeatable tests, work with containerized environments, and contribute findings and remediation recommendations during client engagements.
Requirements
- Strong written and spoken English communication skills
- High diligence and strong attention to detail for multi-step testing and long-running experiments
- Solid understanding of blockchain architecture and node internals (e.g., 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 preferred but not required
Responsibilities
- Conduct in-depth security evaluations of blockchain nodes and validators
- Analyze consensus mechanisms, mempool behavior, networking layers, and chain modules
- Review and analyze blockchain frameworks such as Cosmos SDK, CometBFT, Geth, Hyperledger Fabric, and Besu
- Identify security issues related to consensus safety, chain halting, permission model flaws, and block production vulnerabilities
- Implement and run custom scripts and test scenarios to simulate validator and network behaviors, chain stress conditions, and edge cases
Benefits
- Medical insurance
- Vision insurance
- 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
- Holidays
- Variable commission program for business development sales roles
