Head of Blockchain Security
Bullish helps you trade cryptocurrencies securely through a regulated exchange that combines traditional order books with automated market making.
Funding history
About Bullish
Bullish helps institutional traders execute cryptocurrency transactions through a regulated Gibraltar-licensed platform. You can trade spot assets, access margin funding, and trade perpetual futures with cross-collateralized accounts. The exchange combines traditional central limit order books with automated market making to provide consistent liquidity and tight spreads across market conditions.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
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.
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
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
Benefits
- Discretionary annual target bonus
- Performance incentives
