Junior Network Engineer (m/f/d)

We are seeking a Network Engineer to design, implement, and manage high-performance networks for HPC and AI infrastructure. Candidates will work on cutting-edge technologies, including InfiniBand, optical networking, and advanced Linux-based systems, contributing to scalable, secure, and high-availability network solutions. They should also have expertise in IP routing protocols (BGP, OSPF) and network automation (Ansible, Nornir & Netmiko).

YOUR RESPONSIBILITIES:

• Monitor the performance and health of InfiniBand fabrics, including switches, host adapters, and nodes, using existing tools and contribute to developing new monitoring solutions where necessary.
• Investigate & help diagnose network connectivity issues, performance bottlenecks, and component failures.
• Collaborate with cross-functional teams to support HPC clusters and ensure smooth network operation.
• Assist with the deployment and configuration of network infrastructures, including large-scale fabric installations from initial setup to operational readiness.
• Maintain and update network documentation and workflows to align with organizational standards.
• Contribute to the requirements for deployments and guide cross-functional teams during implementation.
• Develop and implement advanced monitoring tools and strategies for network performance.
• Work with senior colleagues to research technologies to improve scalability and security.
• Help optimization initiatives, ensuring maximum efficiency, security, and performance.
• Contribute to new network technologies into existing infrastructure.
• Troubleshoot for complex, high-impact network issues across multiple sites.
• Support with technical network incidents, working with other teams to resolve issues quickly.
• Work with your team to support network automation solutions using Ansible, Nornir, and Netmiko.
• Contribute ideas and initiatives to ensure network changes are repeatable, efficient, and error-free.

YOUR REQUIREMENTS:

• Knowledge of InfiniBand configuration and management.
• Familiarity with optical networking hardware and Linux system administration.
• Knowledge of one scripting language (e.g., Python, Bash).
• Analytical and troubleshooting skills.
• Ability to collaborate effectively in team environments.
• Willingness to travel to data centers for deployments and support.
• 2 years of experience in network engineering, with a focus on high-performance environments is ideal but not mandatory.
• Understanding in InfiniBand, RDMA, and advanced network architectures is a bonus.
• Certifications (e.g., CCIE, NVIDIA DPU Certification) is a bonus.

Linux System & Network Security: Contribute to network-related Linux administration, ensuring high availability, security, and performance. Work with an understanding of security measures, including firewalls, VPNs, and access control policies.

HPC & InfiniBand understanding: Contribute to designing and implementation of HPC network architectures, focusing on InfiniBand configurations for performance-critical environments. Work alongside senior colleagues for integration and management of InfiniBand for high-throughput, low-latency computing systems. Provide technical input on HPC interconnect issues, optimizing performance across large clusters.

WHAT WE OFFER:

• With us, you will work towards the future of HPC: From new, sustainable building methods for data centers to cooling concepts to software solutions for accelerated compute.
• Your approaches count: In official exchange formats or spontaneously at the coffee machine. At Northern Data, it's the best idea that counts - not the hierarchy.
• You make the difference in the company: Unlike in established corporations, at Northern Data you will really help shape things. From implementing new departments to optimizing processes and culture.
• Best-in-class partners: The best work with Northern Data. This means a knowledge and time advantage from which your career and our customers benefit equally.
• Green by heart: Sustainability is at the core of Northern Data. With us, you actively work on the carbon neutrality of datacenters worldwide.
• Home Office facts: Work with our international and virtual team flexible from home. And of course, your hardware wishes will be fulfilled to make your ideas for next level HPC come true.
• Your wellness matters: At Northern Data we have regular wellbeing initiatives that are designed to promote wellness, diversity, inclusion, and much more, ensuring a supportive and enriching environment for our global team.