Security Architect

About Nebius

Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure.

Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI.

Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D.

Nebius is looking for an experienced Security Architect to join the Cyber Security organization, reporting to the Security Architect Manager.

This role focuses on designing and implementing secure architectures across corporate networks and cloud environments. You will play a key role in defining secure solutions, reviewing system designs, and ensuring security is embedded across enterprise infrastructure.

The ideal candidate brings strong hands‑on expertise in network and cloud security, along with the ability to work closely with IT, Infrastructure, Dev Ops, and Engineering teams to drive secure and scalable implementations.

You're welcome to work in our offices in Amsterdam.

• Design and implement secure architectures across corporate networks, cloud platforms, and hybrid environments.
• Define and maintain security standards, guidelines, and reference architectures aligned with organizational requirements.
• Review and approve architecture and design of new systems, infrastructure, and network changes.
• Design and support secure enterprise network architectures, including segmentation, Zero Trust, and remote access solutions.
• Define and implement controls for firewalls, ZTNA, proxies, and network access control (NAC).
• Design secure cloud architectures including IAM, networking, and workload protection.
• Ensure proper implementation of cloud security controls such as segmentation, encryption, and monitoring.
• Define and support identity and access management controls, including SSO, MFA, and privileged access.
• Contribute to endpoint security architecture, including EDR/XDR and device hardening standards.
• Identify security risks and architectural gaps and recommend mitigation strategies.
• Participate in architecture reviews, risk assessments, and security design discussions.
• Collaborate with SOC, Vulnerability Management, IT, and Engineering teams to improve overall security posture.
• Support implementation of security architecture initiatives and improvements across the organization.

• 5+ years of experience in cyber security, with a focus on network and/or cloud security.
• Strong hands‑on experience in enterprise network security (firewalls, segmentation, VPN, proxies, NAC, etc.).
• Experience working with cloud platforms (AWS, GCP, Azure) and cloud security best practices.
• Solid understanding of identity and access management (IAM), Active Directory / Entra , and access control models.
• Experience working in hybrid environments (on-premise + cloud).
• Strong understanding of security architecture principles and risk-based design.
• Experience working cross-functionally with IT, Infrastructure, Dev Ops, and Engineering teams.
• Strong analytical and problem‑solving skills.

• Experience with Zero Trust architecture and network segmentation strategies.
• Familiarity with cloud security tools (e.g., Wiz).
• Experience with enterprise identity platforms (Entra  / Azure AD, Okta, etc.).
• Knowledge of regulatory and compliance frameworks (ISO 27001, SOC 2, NIST, etc.).
• Experience in SaaS, cloud-native, or enterprise-scale environments.
• Relevant certifications such as CISSP, CCSP, or equivalent.
• BSc in Computer Science, Information Security, or a related field.

• Competitive compensation
• Career growth and learning opportunities
• Flexibility and work-life balance
• Collaborative and innovative culture
• Opportunity…