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Senior Security Engineer at Nansen.ai. . Location: Remote Europe | Remote Asia. 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.. . This 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.. 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 frameworks (SOC 2, ISO 27001, or similar).. . Proficiency with AI-powered tools in day-to-day work, with a drive to find the best balance between productivity and security.. . Clear written and verbal communication skills, suited for a remote-first, async environment.. . A pragmatic, hands-on mindset — comfortable working across security domains rather than specializing narrowly.. . . Nice to Have. . . Experience securing blockchain systems, smart contracts, or staking infrastructure.. . Experience with Kubernetes and infrastructure-as-code security (Terraform).. . Background in incident response or security operations.. . Interest in or experience with the crypto/Web3 space.. . . How We Work. . . We're . remote-first. , with async communication as the default and purposeful use of video calls.. . We work across time zones, with . EMEA working hours. preferred for this role to overlap with the Head of Security and core engineering teams.. . We use . Slack. and structured documentation to keep everyone aligned and empowered.. . You'll join a high-autonomy team where engineers are trusted to take initiative, propose ideas, and ship great work.. .