Infrastructure Security Engineer

About Nebius

Launched in November 2023, the Nebius platform provides high-end infrastructure and tools for training, fine-tuning and inference. Based in Europe with a global footprint we aspire to become the leading AI cloud for AI practitioners around the world.

Nebius is built around the talents of around 400 highly skilled engineers with a proven track record in developing sophisticated cloud and ML solutions and designing cutting-edge hardware. This allows all the layers of the Nebius cloud – from hardware to UI – to be built in-house, differentiating Nebius from the majority of specialized clouds. As a result, Nebius customers get a true hyperscaler-cloud experience tailored for AI practitioners.

As an NVIDIA preferred cloud service provider, Nebius offers the latest NVIDIA GPUs including H100, L40S, with H200 and Blackwell chips coming soon.

Nebius owns a data center in Finland, built from the ground up by the company’s R&D team. We are expanding our infrastructure and plan to add new colocation data centers in Europe and North America already this year, and to build several greenfield DCs in the near future.

Our Finnish data center is home to ISEG, the most powerful commercially available supercomputer in Europe and the 19th most powerful globally (Top 500 list, June 2024). It also epitomizes our commitment to sustainability, with energy efficiency levels significantly above the global average and an innovative system that recovers waste heat to warm 2,000 residential buildings in the nearby town of Mäntsälä.

Nebius is headquartered in Amsterdam, Netherlands, with R&D and commercial hubs across North America, Europe and Israel.

The Role

The Security Engineering Team within the Platform Security organization is responsible for the strategic selection, implementation, management, and optimization of cybersecurity tools and technologies that improve security capabilities of the organization's platform. This team is instrumental in fortifying the security posture, proactively identifying and responding to security threats, ensuring the resilience and protection of critical data, systems, and services.

We are looking for an Infrastructure Security Engineer to secure our cloud and on-premises infrastructure by implementing security controls, monitoring threats, ensuring compliance with industry standards and respond to security incidents. The ideal candidate has a strong background in cloud security, Linux hardening, and network security.

In this position, your responsibility will be to

• Design and implement security measures to protect cloud and on-premises infrastructure.

• Identify and remediate vulnerabilities in cloud environments, networks, and operating systems.

• Build and maintain cloud and infrastructure security tools.

• Perform security reviews, threat modeling and risk assessments of infrastructure components.

• Develop and maintain security guidelines for Network and SRE teams.

• Collaborate with Network and SRE teams to integrate security best practices into their processes and systems.

• Stay updated on the latest security threats, vulnerabilities, and mitigation techniques.

• Serve as an network and infrastructure security subject matter expert to other teams.

We expect you to have

• 4+ years of experience in network, infrastructure or cloud security.

• Strong understanding of modern cloud architectures and deployment models (VMs, containers, serverless, Kubernetes).

• Solid knowledge in networks, distributed systems and Linux systems engineering.

• Hands-on experience with network, VPN and Linux security.

• Understanding of Identity and Access Management (IAM) systems.

• Experience with security automation tools and scripting (e.g. Python, Bash, Go, etc.) and willingness to learn Go, if necessary.

• Experience in using and accessing security of Infrastructure as Code (Terraform).

• Experience in hardening Linux based systems (apparmor, seccomp, etc.).

• Experience in hardening Kubernetes.

• Strong problem-solving and analytical skills.

• Good written and verbal communication skills in English.

• Willingness to learn new things.

• Being comfortable working independently.

It would be an added bonus if you had

• Proficiency in securing AWS, GCP, or Azure environments.

• Experience in conducting threat-modeling sessions.

• Experience in designing, building, and maintaining Identity Aware Proxies or Bastion hosts.

• Experience in translating compliance and regulation requirements into technical specifications.

• Experience in exploiting vulnerabilities in Linux kernel, VMs, containers, and networks.

• Experience in securing bare metal workloads.

• Security certifications such as OSCP or CKS.

We’re growing and expanding our products every day. If you’re up to the challenge and are excited about AI and ML as much as we are, join us!