Principal Security Engineer

• Architectural Leadership: Lead product security architecture, ensuring security principles are embedded into core platform design and development cycles.
• Core Infrastructure Security: Analyze and secure key management systems, transaction pipelines, and signing workflows across modern distributed networks.
• Threat Modeling & Review: Perform system-level threat modeling for new product features, protocols, and multi-chain integrations.
• Cryptographic & Auth Security: Design and evaluate security-sensitive components, including authentication protocols, authorization frameworks, and applied cryptographic workflows.
• Defense-in-Depth: Define, implement, and maintain multi-layered security controls across the application, infrastructure, and protocol layers.
• Supply Chain & Environment Security: Own and expand end-to-end software supply-chain security, spanning dependency scanning in CI pipelines to local developer environments.
• Infrastructure as Code (IaC): Enforce security configurations into version-controlled repositories to prevent configuration drift and enhance auditability.
• Risk Research & Mitigation: Investigate emerging security risks related to blockchain protocols, institutional custody models, and novel cryptographic techniques.
• Compliance & Audits: Support ongoing SOC 2, ISO 27001, and ISO 22301 compliance frameworks alongside expanding control surfaces.
• Technical Enablement & Incident Response: Provide day-to-day guidance to engineering teams to make secure patterns accessible, while supporting incident response and root-cause analysis when necessary.
• External Representation: Participate in security architecture reviews with tier-one banking partners, external auditors, and enterprise clients.
• Industry Thought Leadership: Contribute to technical research, whitepapers, and conference presentations to advance the digital asset security field.

• Experience: 10+ years in security engineering, product security, or security architecture roles.
• Domain Expertise: Demonstrated track record of securing financial infrastructure, institutional blockchain platforms, or both.
• Cryptographic Systems: Deep understanding of cryptographic protocols, wallet architectures, and key management frameworks. Direct experience with Multi-Party Computation (MPC), threshold signatures, or HSM-backed solutions is strongly preferred.
• Threat Modeling: Extensive experience performing comprehensive system-level threat models and architecture reviews.
• Infrastructure & Networks: Solid foundational knowledge of distributed systems, networking protocols, and cloud computing platforms (primarily AWS).
• Supply Chain & IaC: Hands-on experience implementing software supply-chain defenses and managing security configurations via code to prevent drift.
• Compliance & Frameworks: Familiarity with maintaining live audit cycles for frameworks such as SOC 2, ISO 27001, ISO 22301, and the NIST Cybersecurity Framework.
• Development Skills: Professional familiarity with modern backend languages such as Rust or TypeScript.
• Communication: Exceptional ability to communicate complex security concepts effectively to both internal engineering teams and external enterprise stakeholders., * Critical Thinking
• Verbal Reasoning
• Attention to Detail (Textual)
• Numerical Reasoning
• Problem Solving

• (Note: Practice questions are provided prior to each timed 10-minute section).

• Take-Home Technical Exercise: A practical assignment designed to assess technical problem-solving and architectural design capabilities.
• Group Technical Interview (120 mins): A multi-part panel review covering

Pulled from the full job description Health insurance Paid time off, * Competitive executive-level compensation package.

• Flexible, remote-first work environment.
• Comprehensive health, wellness, and benefits coverage tailored to regional standards.
• Generous paid time off (PTO) and personal Leave policy.
• Professional development budget for security research, certifications, and industry conferences.
• Exposure to cutting-edge cryptographic engineering alongside leading global financial institutions.

Interview Process

The selection process for this position consists of the following structured phases:

• Initial Screening Call (30 mins): Introductory discussion with the Co-CEO to align on background, expectations, and role scope.
• Cognitive & Skills Assessment (45 mins): A series of brief, timed assessments via TestGorilla evaluating