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Principal Networking Engineer

About FluidStack

Fluidstack is the AI Cloud Platform. We build GPU supercomputers for top AI labs, governments, and enterprises. Our customers include Mistral, Poolside, Black Forest Labs, Meta, and more.

Our team is small, highly motivated, and focused on providing a world class supercomputing experience. We put our customers first in everything we do, working hard to not just win the sale, but to win repeated business and customer referrals.

We hold ourselves and each other to high standards. We expect you to care deeply about the work you do, the products you build, and the experience our customers have in every interaction with us.

You must work hard, take ownership from inception to delivery, and approach every problem with an open mind and a positive attitude. We value effectiveness, competence, and a growth mindset.

About the Role

We are seeking a Principal Networking Engineer to design and implement robust, high-performance networks that support Fluidstack's global AI deployments. You will be responsible for ensuring network scalability, security, and efficiency to meet the demands of our customer’s AI workloads.

Focus

  • Design and deploy network architectures, including RDMA (IB and RoCE v2), Ethernet LAN, and WAN.

  • Implement network security measures and protocols, including managing multi-tenant networks.

  • Optimize performance of Ethernet and IB networks.

  • Collaborate with other infrastructure teams to ensure seamless integration.

  • Stay abreast of emerging networking technologies and best practices.

About You

  • 7+ years of experience in network architecture and engineering.

  • Deep understanding of L1-3 network design as well as RDMA network topologies.

  • Experience with network hardware (e.g., Mellanox, Arista, etc.) and Network OSes (Cumulus, SoNIC, etc.); software-defined networking experience is a plus.

  • Experience developing automation tools for ZTP, monitoring, and remediation.

  • Experience with common routing protocols  (BGP, ISIS, OSPF).

  • Experience with encapsulation protocols (EVPN/VXLAN, Geneve).

  • Experience with Kubernetes CNIs (Calico and/or Cilium).

  • Strong problem-solving skills and attention to detail.

  • Excellent communication and collaboration abilities.

  • Certifications like CCNA, CCNP, JNCIA are a nice to have.

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.

  • Fluidstack is remote first, but has offices in key hubs. For all other locations, we provide access to WeWork.

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Average salary estimate

$140000 / YEARLY (est.)
min
max
$120000K
$160000K

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TEAM SIZE
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EMPLOYMENT TYPE
Full-time, remote
DATE POSTED
June 5, 2025

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