Remote Senior Security Engineer - AI & Cloud Focus

About the Role

We're hiring a Remote Senior Security Engineer to join our innovative team at Nansen.ai. As a leader in the future of finance, we are building a platform that integrates analytics and execution, allowing investors to find alpha and act on it securely. In this role, you will play a crucial part in strengthening our security posture as we scale our product and AI-powered capabilities.

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.

Requirements

• 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 frameworks and best practices.

Nice to Have

• Certifications in security (CISSP, CISM, etc.)
• Experience with blockchain security practices.
• Knowledge of secure coding practices and methodologies.

What We Offer

• Competitive salary ranging from $140K to $180K annually.
• Fully remote work environment with flexible hours.
• Opportunities for professional development and growth.
• A collaborative and innovative team culture.
• Health and wellness benefits.
• Equity options for long-term employees.