Blockchain Security Lead at Galaxy Digital Inc. – Remote | Jobyssey

Own the security posture of on-chain systems and protocols across the organization, combining strategic leadership with hands-on expertise while guiding a team of blockchain security engineers and contributing to design reviews, threat modeling, and code audits.

Responsibilities

Lead, mentor, and grow a team of blockchain security engineers.
Define and evolve the blockchain security strategy and roadmap.
Serve as a trusted security partner to product, protocol, and infrastructure teams.
Lead threat modeling and architecture reviews for on-chain systems.
Perform and guide security reviews and audits of smart contracts and backend services and supporting infrastructure.
Design and implement reusable security controls, patterns, and reference architectures.
Support secure deployment of cloud-native infrastructure, including containers and Kubernetes.
Research emerging blockchain threats, exploits, and mitigations, and translate them into actionable controls.
Champion thoughtful adoption of AI to improve team performance and business outcomes.
Leverage AI tools to improve productivity, decision-making, and output quality.

Requirements

Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent experience.
10+ years of security software engineering experience.
5+ years working with blockchain technologies.
5+ years working with smart contract security across multiple chains.
Experience leading or mentoring a small, highly technical team.
Published material on vulnerabilities or security bugs within the Web3 community.
Expertise in secure SDLC, threat modeling, and application architecture review.
Multi-agent code reviews for vulnerabilities using frontier models.
Secure coding practices and in-depth code review capability.
Strong familiarity with Solidity, Rust, Docker, Kubernetes, authentication and authorization, TLS/PKI, cloud infrastructure, and network security.
Clear, confident communication across technical and non-technical audiences.
Ability to balance hands-on execution with strategic ownership and solve problems under ambiguity.
Direct exposure to Solana, staking systems, or similar Layer 1 protocols is a bonus.
Experience at a blockchain security audit firm, financial services or institutional crypto security, DeFi protocol security, key management, custody architectures, or crypto security programs is a bonus.

Benefits

Competitive base salary and discretionary bonus
Hybrid/Flexible Working Arrangements
Flexible paid time off
3% 401(k) company contribution
Company-paid health and protective benefits for employees, partners, and dependents
Generous paid parental leave
Competitive family planning benefits for US employees
Opportunities to learn about the crypto industry
Smart, entrepreneurial, and fun colleagues
Free daily snacks and weekly breakfasts and lunches
Employee Resource Groups
Free coaching and counseling sessions through Headspace

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Benefits