Build and operate central security systems, automation, tooling, and controls across cloud infrastructure, identity, access, products, partners, and vendors. Develop AI-assisted security workflows, lead external assessments through verified remediation, identify and validate vulnerabilities, guide engineering teams, and participate in incident response. The role requires production security engineering experience, strong programming skills, cloud security expertise, and fintech, payments, or crypto experience.

Own application security for backend services, APIs, cloud infrastructure, and edge systems handling financial transactions. Responsibilities include validating red-team findings, assigning severity, hardening services, implementing WAF and rate-limiting defenses, creating automated security configuration checks, expanding pull-request security gates, reviewing architectures, managing attack-surface coverage, and evaluating security tools. The role also partners with engineers and Security Operations to drive effective remediation.

Design and own secure, scalable wallet infrastructure for custody, key management, transaction signing, authorization, recovery, and multichain systems. Architect support for MPC, HSMs, secure enclaves, TEEs, smart contract wallets, account abstraction, and emerging cryptographic approaches. Define security boundaries, policy engines, secrets management, authentication, and programmable authorization while making foundational build-versus-buy decisions and guiding systems from first principles through production.