Network Engineer, Design & Engineering

The role

The Network Engineer will own the network design lifecycle from customer requirements to validated architectures for AI training and inference. This includes producing topology designs, routing policies, and physical implementation details for various GPU platforms.

What you will do

• Own the network design lifecycle from customer requirements through deployable, validated architectures.
• Produce topology designs, IP/addressing schemes, routing policy, and fabric configuration specs.
• Adapt architectures to different GPU platforms, form factors, and workload profiles.
• Translate logical designs into physical reality including rack elevations, power constraints, and cabling.
• Design lossless Ethernet fabrics for RDMA (RoCEv2).
• Produce HLDs, LLDs, cutsheets, BOMs, cabling matrices, and design decision records.
• Lead design reviews and reusable reference architectures.
• Partner across Hardware, DC Operations, ICT, Software, and Validation.

Required qualifications

• Designed data center network fabrics from requirements through deployment.
• Deep L1 to L3 expertise: CLOS/fat-tree topologies, BGP, EVPN/VXLAN, and the fundamentals underneath them.
• Design lossless RDMA (RoCEv2) fabrics and understand congestion management at training scale.
• Reason from first principles through novel design challenges.

Nice to have

• Source-of-truth-driven design generation.
• Multi-vendor GPU platform integration.
• Large-cluster (100k+ accelerator) experience.

Benefits

• Competitive total compensation package (salary + equity).
• Retirement or pension plan, in line with local norms.
• Health, dental, and vision insurance.
• Generous PTO policy, in line with local norms.

About the company

Fluidstack aims to deliver 10 to 100s of GWs of compute faster than anyone else by designing, building, and operating data centers. They focus on building civilization-scale infrastructure for AI.