Blockchain Security Expert - Chain Security Evaluation Track
US / RemoteFull-TimeMid-levelOther
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.
