Network and Security DevOps Engineer F/H

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Role Summary: 

We are seeking a highly skilled and adaptable Network & Security Engineer with strong Web/DevOps experience to architect, secure, and automate the advanced networking infrastructure supporting our AI Factory. This role involves managing high-bandwidth fabrics (RoCE, InfiniBand) across Dell/NVIDIA GPU clusters, ensuring secure and resilient connectivity for AI/ML workloads. You will collaborate closely with DevOps and AI platform teams to streamline deployment, monitoring, and incident response for cloud-native applications running on OpenShift and Kubernetes, while integrating cutting-edge GPU orchestration and data management solutions. 

Key Responsibilities: 

Network & Security: 

• Design, deploy, and secure high-throughput network architectures supporting RoCE v2 fabrics for AI/ML workloads. 

• Manage Dell/NVIDIA-based GPU networking environments, including backend and frontend switch configurations (e.g., Z9432F, S5248F). 

• Design, deploy, and manage secure, scalable network architectures (LAN/WAN, firewall Palo alto). 

• Implement and maintain network security controls across RDMA-enabled fabrics, ensuring isolation and integrity of GPU clusters. 

• Manage DC fabrics like VXLAN-EVPN 

• Implementation of QoS for DC environment with very high performance (marking, Queing, WRED, smart/adaptative buffering, smart ECMP/multi-path load-balancing…etc…) 

• Configure and maintain network security devices including firewalls Palo Alto 

• Monitor and analyse traffic across 400G/800G fabrics using telemetry tools. 

• Respond to security incidents, conduct root cause analysis, and support forensic investigations. 

• Ensure compliance with industry security standards and regulatory requirements. 

• Collaborate with security teams to implement network segmentation strategies. 

Web/DevOps: 

• Experience on orchestration environments (Openshift/Kubernetes/Docker) focusing on GPU-aware scheduling and network policies and security enforcements. 

• Integrate security controls and best practices into automated build and deployment processes. 

• Monitor web services for performance, availability, and security issues using Prometheus, Grafana, ELK stack, etc. 

• Support web application security testing (SAST/DAST) and vulnerability remediation. 

• Develop scripts and tools to automate repetitive tasks and improve operational efficiency. 

Required Skills & Experience: 

• Deep understanding of RoCE v2, InfiniBand, and high-speed networking protocols. 

• Experience with Dell/NVIDIA GPU infrastructure and switch management (Z9432F, S5248F). 

• Strong background in network security technologies and RDMA-aware security practices. 

• Familiarity with OpenShift, Kubernetes, and container networking. 

• Proven experience in network engineering: TCP/IP, routing, switching, VPN, VLANs, firewalls. 

• Strong background in network security technologies (firewall palo alto). 

• Hands-on experience with Kubernetes and container networking/security -nice to have) 

• Familiarity with CI/CD pipelines and DevOps tools (Jenkins, GitLab CI, CircleCI) (Nice to have) 

• Proficiency in Infrastructure as Code tools (Terraform, Ansible, CloudFormation). (nice to have) 

• Good knowledge of architecture and technologies of QoS for High-performance Datacenter (marking, Queing, WRED, smart/adaptative buffering, smart ECMP/multi-path load-balancing…etc…), and of lossless fabrics for AI/ML environnement AI/ML : PFC, DCQCN, le « RoCE Adpatative Routing », NVDIA etc…  

• Familiarity with AI/ML pipeline security and GPU orchestration platforms (RUN:AI, NVIDIA Enterprise).  

• Experience scripting with Python, Bash, or PowerShell. 

• Understanding of web services, APIs, and HTTP security concepts. 

• Knowledge of monitoring/logging tools (Prometheus, Grafana). 

• Strong troubleshooting and analytical skills with a security mindset. 

Preferred Qualifications: 

• Certifications such as CCNP Network is nice to have 

• Experience with security / network segmentation 

• Experience working in Agile and DevSecOps environments. 

Education: 

• Bachelor’s degree in Computer Science, Information Security, Network Engineering, or equivalent experience. 

Workplace type:

About NTT DATA
NTT DATA is a $30+ billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world’s leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services.  Our consulting and industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is part of NTT Group, which invests over $3 billion each year in R&D.

Equal Opportunity Employer
NTT DATA is proud to be an Equal Opportunity Employer with a global culture that embraces diversity. We are committed to providing an environment free of unfair discrimination and harassment. We do not discriminate based on age, race, colour, gender, sexual orientation, religion, nationality, disability, pregnancy, marital status, veteran status, or any other protected category. Join our growing global team and accelerate your career with us. Apply today.

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