Network Architect

The company

Nebius AI is an AIcentric public cloud platform specifically designed to serve AI models for training and inference. Our own data center in Finland was rated # 16 most powerful supercomputer in the Top 500 ranking. With four European development hubs we have a team of 500 professionals with a proven track record in developing sophisticated cloud and ML solutions and designing cuttingedge hardware.

Four development hubs:
Nebius is headquartered in the Netherlands with hubs in Finland Serbia and Israel.

Data center in Europe:
Our own data center in Finland features server racks designed inhouse for MLspecific high load with powerefficient solutions including a freecooling system.

500 professionals:
Our mature team of engineers has a proven track record in developing sophisticated cloud and ML solutions and designing cuttingedge hardware.

The role

We are looking for an expertlevel Network Engineer (Network Architect) to join our team to ensure the development of our own data center infrastructure and the backbone network research and develop the future of network interconnect for highscale datacenter fabric with GPU interconnect highspeed storage indepth investigations of emerging issues on the network together with neighboring server infrastructure and cloud overlay teams.

Youre welcome to work in our office in Amsterdam.

In this position your responsibility will be to:

• Provide technical design operations and assistance to related crossfunctional team projects including internal R&D and hardware as a service team.
• Design evaluate and provide solutions for allaround network services in cloud overlay and underlay environments.
• Research and evaluate R&D network equipment in the internal lab with the server team and network development team; prepare MVP of network segments for deploying new services.
• Design and develop data center networks with thousands of server ports InfiniBandbased or other kinds of interconnect for GPU clusters and automation and management tools.
• Provide documentation for endtoend traffic flow including intermediate devices like hostbased FW/overlay data plane/cloud gateway transit firewall multivendor datacenter fabric and datacenter edge and backbone part.
• Develop tools for indepth investigation monitoring and healing of scalable datacenter networks including data and control planes across vm/cloud overlay and underlay.
• Contribute to the launch of new regions within our cloud and GPU platforms.

We expect you to have:

• Expert and aboveaverage understanding and experience in MPLS with different vendors routing and switching for DataCenter routing stack including proprietary vendors and opensource suites FRR/BIRD/goBGP SR MPLSSRv6 traffic balancing/ECMP internet traffic engineering and cloud overlay network technologies.
• Experience in researching preparing and documenting the developed network design and solution.
• Experience in developing plans and testing network infrastructure and vendors for specific purposes workloads and runtime.
• Experience in diagnosing problems with the TCP/IPv4/v6/multilayer encapsulation protocol stack in a CLOS topology data center network endtoend including intermediate equipment (FW LB/uplinks and backbone).
• Knowledge of the design and internal architecture of modern network equipment including ASIC Whitebox QoS mechanisms and the operation of combination functionality.
• Experience with multivendor environments with backbox and white box switches opensource NOS.
• Working proficiency in English.

It would be an added bonus if you had:

• Working knowledge of the GPU Interconnect cluster with more than 2k GPU cards.
• Practical experience with using SDK to Broadcom/spectrum ASICs.

Does all that sound like your kind of challenge Then join us!