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Fireblocks is a blockchain and digital asset security platform trusted by major financial institutions and Web3 companies. As a Senior Information Security Engineer, you will be the technical anchor of the company's internal security posture, responsible for deploying and managing enterprise security stacks, leading AI security initiatives, and building proactive defenses at scale. What You'll Do • Deploy, manage, and tune enterprise-grade security stacks including EDR, DLP, IAM, CASB, and MDM with deep integration and automation • Lead AI Security initiatives by implementing and securing AI-driven workflows, governing LLM use, and protecting against emerging threats such as data leakage and prompt injection • Build and maintain high-fidelity detections and guardrails aligned with real-world attack techniques • Partner with Engineering, IT, and DevOps teams to ensure security controls are frictionless, automated, and effective • Develop custom security integrations and automate manual security tasks using advanced scripting What You Need • 4+ years of hands-on experience in Information Security Engineering or SecOps within high-growth, cloud-native environments • Practical experience securing AI adoption and leveraging AI-driven platforms to scale defensive capabilities • Expert-level knowledge of endpoint security for macOS and Linux • Advanced proficiency with SaaS ecosystems and Identity platforms such as Okta and OIDC • Advanced scripting skills in Python to automate security tasks and build custom integrations