Senior Security Engineer – Digital Assets Platform - VP
Core
Design, develop, and maintain security-critical backend services and cryptographic infrastructure for Citi's Digital Assets Platform, protecting billions of dollars in digital assets.
Role type
Senior Security Engineer (VP)
Builds
Production Java backend services, HSM integrations, and MPC protocols for institutional digital asset custody.
Domain
Financial services / Cryptography / Blockchain infrastructure
Required skills
Java, Hardware Security Modules (HSM), Multi-Party Computation (MPC), Applied Cryptography, Secure Design Patterns, Threat Modelling, CI/CD Security Tooling, Distributed Systems
Preferred skills
Digital Asset Custody, Smart Contract Security, Financial Regulatory Frameworks, Penetration Testing
Technologies
Java, PKCS#11, JCE/JCA, AES-GCM, RSA, ECC, ECDSA, EdDSA, HKDF, PBKDF2, OAuth 2.0, JWT, mTLS
Responsibilities
Design and develop security-critical backend services; Integrate and manage HSMs; Architect MPC protocols; Enforce cryptographic best practices; Define secure design patterns; Collaborate on threat modelling and security reviews; Champion security-by-design in code reviews and CI/CD; Act as technical escalation for security incidents.
Seniority
Senior, hands-on IC
