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.
The Opportunity
As 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.
What You'll Do
- Conduct security reviews of systems, architectures, and code — proactively identifying and addressing vulnerabilities.
- Serve as a go-to security advisor for engineering teams, helping them make secure design decisions.
- Define and implement security standards across cloud infrastructure, applications, and blockchain systems.
- Implement and maintain security tooling: vulnerability scanning, endpoint protection, SIEM, logging and monitoring.
- Secure CI/CD pipelines and deployment workflows from a security perspective.
- 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.
- Manage and improve secrets management, key management, and access control practices across the organization.
- Define and maintain secure coding guidelines and security review processes for engineering teams.
- Collaborate with external providers on penetration tests and security audits, ensuring findings are prioritized and remediated.
- Participate in incident response: investigation, containment, root cause analysis, and post-incident improvements.
- Support compliance and audit readiness by implementing required security controls and maintaining documentation.
What We're Looking For
- Strong understanding of cloud security (AWS, GCP, or similar), container security, and network security fundamentals.
- Hands-on experience implementing and operating security tools (SIEM, vulnerability scanners, endpoint protection, cloud security tooling).
- Experience with secrets management, key management, and encryption best practices.
- Experience securing AI/LLM tooling, agent-based systems, and modern developer platforms.
- Familiarity with securing CI/CD pipelines and developer tooling.
- Solid understanding of compliance framework.
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