Head of Blockchain Security

You will own and improve the security posture of blockchain infrastructure, custody systems, and smart contract protocols. You will lead security audits, develop monitoring and automated detection systems, advise stakeholders on technical risk, assess custody and treasury controls, and operate emergency-response workflows.

Responsibilities

• Lead architectural reviews and security audits of Solidity, Rust, and Move smart contracts
• Oversee third-party audits for high-complexity releases
• Produce prioritized technical risk reports and advise protocol founders, engineering leaders, and executives
• Build and maintain blockchain monitoring, alerting, and automated detection systems
• Design and operate automated emergency exit workflows
• Facilitate incident-response tabletop exercises
• Assess institutional custody systems, treasury controls, and vendor infrastructure
• Build scalable security frameworks and processes

Requirements

• 7+ years of cybersecurity experience, including 5+ years in blockchain and smart contract security
• Experience assessing Solidity, Rust, and/or Move smart contracts
• Background in C/C++, Linux, and cloud-native architectures including AWS, Azure, and GCP
• Senior-level penetration testing, application security, offensive security, design reviews, and threat modeling experience
• Expertise in applied cryptography and network and protocol fundamentals
• Knowledge of institutional custody infrastructure and DeFi protocols across Ethereum, Solana, Stacks, and Sui
• Ability to communicate critical risks to technical and non-technical stakeholders

Benefits

• Discretionary annual target bonus
• Performance incentives