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Blockchain Security Expert - Chain Security Evaluation Track

Certik
Remote, USA
Full-time
Mid
Remote
USD 120000-180000 / year
Discovered 1 months ago
bashdockerpython

Full Job Posting

Responsibilities

  • 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.

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.

What We Offer

Opportunity to shape the national conversation on blockchain and security.

Collaborate with industry-leading security researchers, technologists, and global institutions.

Flexible work environment and mission-driven culture.

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