Hiring: Head of Blockchain Security Company: CoinDesk Location: New York, United States Job Posted Time: 2026-09-10 11:44:19 Employment Type: Contract Target Skills & Keywords : AWS, Azure, Blockchain, C, C++, Cloud Native, DNS, DeFi, Encryption, Ethereum, GCP, Linux, OWASP, PKI, Penetration Testing, REST, Rust, SSL, Smart Contracts, Solana, Solidity, TLS, Web3 About the job Experience: •7+ years in cyber security, with 5+ years dedicated specifically to blockchain and smart contract security Required Skills: •This role is based in NYC and will be required to work onsite at our office a minimum of 4 days per week. •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 assessments of external institutional custody systems, internal treasury controls, and third-party vendor infrastructure. •Scalable Operations: Build repeatable security frameworks and processes that enable our security program to scale seamlessly alongside aggressive organizational growth. Qualifications: •Technical Depth: Hands-on experience assessing smart contracts written in Solidity, Rust, and/or Move. Strong background in C/C++, Linux, and cloud native architectures (AWS, Azure, GCP). •Security Discipline: Proven background in senior-level penetration testing, application security, offensive security methodologies, design reviews, and threat modeling (OWASP Top 10, SANS CWE 25). •Encryption & Network Infrastructure: Deep expertise in applied cryptography (PKI, algorithms, encryption at rest/in transit) and network/protocol fundamentals (IP, DNS, HTTP, SSL/TLS) •Multi-Chain Ecosystem Knowledge: Strong working knowledge of institutional custody infrastructure and major DeFi protocols across Ethereum, Solana, Stacks, and Sui. •High EQ & Communication: Ability to articulate critical risks concisely to technical teams and non-technical stakeholders alike. Outstanding self-management and operational autonomy across global time zones. •Offensive security certifications (OSCP, OSWE, OSCE) or related credentials. •Track record of public security research, published vulnerability papers, or presentations at major industry conferences. •Bullish US LLC & CoinDesk Inc. are committed to offering competitive compensation and benefits. The anticipated base salary for this position is $260,000 - $275,000 + discretionary annual target bonus + performance incentives/benefits. Offered salary will be reflective of job related knowledge, skills and commensurate experience. Compensation: •$260,000 - $275,000 / year •CoinDesk is the most trusted media, events, indices and data company for the global crypto economy Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!