Network Engineer, Design & Engineering

Fluidstack

$120K — $145K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 3+ years of experience in network architecture and engineering
  • Strong understanding of L1-3 network design and RDMA topologies
  • Familiarity with network hardware like Mellanox and Arista
  • Experience with Network OSes such as Cumulus and SoNIC
  • Skill in developing automation tools for monitoring and remediation
  • Proficiency with routing protocols (BGP, ISIS, OSPF)
  • Knowledge of encapsulation protocols like EVPN/VXLAN

Responsibilities

  • Design and deploy robust network architectures for global AI deployments
  • Implement and manage network security measures for multi-tenant environments
  • Optimize performance of Ethernet and InfiniBand networks
  • Collaborate with infrastructure teams for seamless service integration
  • Stay updated on emerging networking technologies and best practices

Benefits

  • Competitive total compensation package including salary and equity
  • Retirement or pension plan according to local standards
  • Health, dental, and vision insurance provided
  • Generous PTO policy aligning with local norms
  • Remote-first culture with WeWork access for remote locations
Full Job Description
Role Scope
  • Own the network design lifecycle from customer requirements (GPU shape, workload, scale, tenancy) through deployable, validated architectures for AI training and inference.
  • Produce topology designs, IP/addressing schemes, routing policy, and fabric configuration specs across front-end, back-end (GPU-to-GPU training fabric), and storage networks.
  • Adapt architectures to different GPU platforms (NVIDIA, AMD, custom accelerators), form factors, and workload profiles, each with its own rack layout, power envelope, and cabling approach.
  • Translate logical designs into physical reality: rack elevations, power constraints, structured cabling and fiber budgets, pathway routing, and airflow that affect equipment placement.
  • Design lossless Ethernet fabrics for RDMA (RoCEv2): PFC, ECN tuning, traffic classes, and congestion management, reasoning about ECMP and collective-communication patterns in distributed training.
  • Produce HLDs, LLDs, cutsheets, BOMs, cabling matrices, and design decision records, and lead design reviews and reusable reference architectures.
What We're Looking For

The below is a starting point. We always make space for exceptional people, so if you don't fit this role exactly, tell us where you would.
  • You've designed data center network fabrics from requirements through deployment, not just configured them, and can explain the tradeoffs behind every decision.
  • You have deep L1 to L3 expertise: CLOS/fat-tree topologies, BGP, EVPN/VXLAN, and the fundamentals underneath them.
  • You design lossless RDMA (RoCEv2) fabrics and understand congestion management at training scale.
  • You reason from first principles through novel design challenges rather than pattern-matching to one reference architecture.
  • You partner across Hardware, DC Operations, ICT, Software, and Validation so designs are buildable and operationally sound.
  • Bonus: Source-of-truth-driven design generation. Multi-vendor GPU platform integration. Large-cluster (100k+ accelerator) experience.
Salary & 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.


We are committed to pay equity and transparency.

You will receive a confirmation email once your application has successfully been accepted. If there is an error with your submission and you did not receive a confirmation email, please email [redacted] with your resume/CV, the role you've applied for, and the date you submitted your application-- someone from our recruiting team will be in touch.

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