Head of Blockchain Security

CoinDesk is the most trusted media, events, indices and data company for the global crypto economy. Since 2013, CoinDesk Media has led the story of the future of money and investing, illuminating the transformation in society and culture that comes with it. Our award-winning team of journalists delivers news and unparalleled insights that bring transparency, comprehension and context. CoinDesk Events gathers the global crypto, blockchain and Web3 communities at annual events such as Consensus, the world’s largest and longest-running crypto festival. CoinDesk Indices offers expertise in digital asset indices, data and research to educate and empower investors. For more information on CoinDesk media and events, please visit   http://coindesk.com [coindesk.com]   and for breaking headlines, data and indices visit   http://coindeskmarkets.com [coindeskmarkets.com] In November 2023, CoinDesk was acquired by the Bullish group, owner of Bullish, a regulated, digital assets exchange. For more information on Bullish, please visit https://bullish.com  . CoinDesk operates as an independent subsidiary with an editorial committee to protect journalistic independence. Reports to: Chief Information Security Officer About the Role We are looking for an exceptional Head of Blockchain Security to own and elevate the end-to-end security posture of our blockchain infrastructure, custody systems, and smart contract protocols. In this role, you will operate as both a high-impact technical authority and a strategic partner to internal teams, protocol founders, and external security partners. You will design scalable security frameworks, lead complex audits across multi-chain environments, and engineer rapid-response mechanisms to protect assets in high-stakes environments. We operate lean, move fast, and value high emotional intelligence alongside deep technical rigor. This role is based in NYC and will be required to work onsite at our office a minimum of 4 days per week. Responsibilities: Smart Contract Audit & Engineering: Lead deep-dive architectural reviews and security audits of smart contracts (Solidity, Rust, Move), focusing on protocol-level vulnerabilities. Oversee external third-party audits for high-complexity releases. Risk Advisory & Stakeholder Alignment: Produce clear, prioritized technical risk reports. Serve as the primary security advisor to protocol founders, engineering leads, and executive leadership, translating complex risks into actionable decisions. Toolchain & Automation Architecture: Build, deploy, and maintain robust blockchain monitoring, alerting, and automated detection systems across major ecosystems. Emergency Response & Crisis Readiness: Design and operate automated emergency exit workflows to protect protocol assets under adverse market or security conditions. Facilitate cross-industry incident response tabletop exercises. Custody, Treasury & Supply Chain Assurance: Conduct rigorous technical…