Nansen.ai is hiring a
Remote Senior Security Engineer
Nansen surfaces the signal and creates winners in the future of finance. We're building a new way to trade: agentic, onchain, and fully integrated. From analytics to execution, we're the platform where investors find alpha and act on it.\n\nThe Opportunity\nAs we scale our product, staking operations, and AI-powered capabilities, security matters more than ever. We're hiring a Senior Security Engineer to strengthen our security posture across the entire engineering organisation. You'll work closely with the Head of Security and collaborate hands-on with engineering teams across the company to ensure that the systems we build are secure by design.\n\nThis is a generalist security role. You'll operate across application security, cloud infrastructure security, and organizational security practices. It's ideal for someone who thrives in a high-autonomy environment, is comfortable spanning multiple security domains, and wants to have outsized impact at a growing company.\n\nWhat You'll Do\n• Conduct security reviews of systems, architectures, and code — proactively identifying and addressing vulnerabilities.\n• Serve as a go-to security advisor for engineering teams, helping them make secure design decisions.\n• Define and implement security standards across cloud infrastructure, applications, and blockchain systems.\n• Implement and maintain security tooling: vulnerability scanning, endpoint protection, SIEM, logging and monitoring.\n• Secure CI/CD pipelines and deployment workflows from a security perspective.\n• Secure internal AI tools and LLM integrations — from API key management and prompt injection prevention to evaluating the security implications of AI adoption across the organization.\n• Manage and improve secrets management, key management, and access control practices across the organization.\n• Define and maintain secure coding guidelines and security review processes for engineering teams.\n• Collaborate with external providers on penetration tests and security audits, ensuring findings are prioritized and remediated.\n• Participate in incident response: investigation, containment, root cause analysis, and post-incident improvements.\n• Support compliance and audit readiness by implementing required security controls and maintaining documentation.\n\nWhat We're Looking For\n• Strong understanding of cloud security (AWS, GCP, or similar), container security, and network security fundamentals.\n• Hands-on experience implementing and operating security tools (SIEM, vulnerability scanners, endpoint protection, cloud security tooling).\n• Experience with secrets management, key management, and encryption best practices.\n• Experience securing AI/LLM tooling, agent-based systems, and modern developer platforms.\n• Familiarity with securing CI/CD pipelines and developer tooling.\n• Solid understanding of compliance framew
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