Senior Security Engineer, DeFi

Team: IT

Location: Canada

Commitment: Full-time

Workplace Type: remote

Accountabilities:

• Design, implement, and continuously improve security measures for decentralized finance applications, protocols, and supporting infrastructure.
• Identify, assess, and mitigate security risks across DeFi systems, smart contract environments, blockchain infrastructure, and related technologies.
• Conduct security reviews, threat modeling, vulnerability assessments, and other technical analyses to identify potential attack vectors and weaknesses.
• Partner closely with engineering teams to integrate security principles throughout the software and product development lifecycle.
• Investigate security incidents and vulnerabilities, supporting remediation efforts and helping strengthen defensive capabilities.
• Develop and improve security processes, tooling, monitoring, and controls to increase the resilience of DeFi systems.
• Contribute technical expertise to security architecture and design decisions for new and existing systems.
• Stay current with emerging blockchain, DeFi, smart contract, and application security threats and translate relevant developments into practical security improvements.
• Collaborate across technical teams to promote secure engineering practices and a strong security culture.

Requirements

• Senior-level experience in security engineering, application security, blockchain security, or a closely related discipline.
• Strong understanding of decentralized finance, blockchain technologies, smart contracts, and associated security risks.
• Demonstrated experience identifying and mitigating vulnerabilities in complex technical systems.
• Strong knowledge of security architecture, threat modeling, vulnerability assessment, secure software development, and security best practices.
• Experience working closely with software engineers and other technical stakeholders on security-focused initiatives.
• Ability to analyze complex systems, identify potential attack paths, and develop practical mitigation strategies.
• Strong programming and technical problem-solving capabilities, with the ability to understand and review complex codebases.
• Excellent written and verbal communication skills, with the ability to explain security risks and recommendations clearly to technical and non-technical stakeholders.
• High degree of autonomy, ownership, curiosity, and attention to detail.
• Comfortable working in a fast-moving environment where technologies, threats, and priorities evolve rapidly.
• A strong interest in emerging technologies and a willingness to continuously develop expertise in blockchain and DeFi security.

Benefits

• $165,000–$225,000 US base salary range, with individual compensation determined by skills, experience, education, training, and other job-related factors.
• Additional total compensation through tokens and equity.
• Eligibility for annual equity and token refresh grants.
• Comprehensive medical, dental, and vision insurance for employees and dependents.
• Health Savings Accounts and Flexible Spending Accounts.
• 18 weeks of paid parental leave.
• Wellbeing programs, including family planning support, gender-affirming care, fitness and nutrition resources, mental health support, counseling, and an Employee Assistance Program.
• Short- and long-term disability, life insurance, accident insurance, and other coverage options.
• Traveler insurance and 401(k).
• Complimentary privacy protection service.
• Wellness stipend.
• Flexible paid time off and 11 paid holidays annually.
• Remote work environment with opportunities for team offsites and an annual company retreat.
• Opportunity to work on challenging security problems across blockchain and decentralized finance technologies.