Senior Network Architect for Sovereign EU GPU Cloud

Circle B; Hoofddorp; On-site; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Office in Hoofddorp

Informal and open culture

Conference opportunities

Job summary

Circle B is building a sovereign EU GPU cloud from the ground up. You will own the end-to-end network fabric, delivering a lossless backbone across multi-zone segments, with proper isolation, routing, and security.

Expect to work with RoCEv2/InfiniBand, BGP/EVPN in spine-leaf architectures, and modern switches. You will automate configuration and validation with Python, Ansible, and gNMI, while driving telemetry and drift detection as code.

Qualifications

• 7+ years in network engineering with production datacenter fabric experience.
• Deep experience with lossless fabrics (RoCEv2 or InfiniBand) in production.
• Strong BGP/EVPN/VXLAN in Clos/spine-leaf designs with ECMP and QoS.
• Hands-on with modern switch OS (SONiC/Cumulus/EOS) and network automation.

Responsibilities

• Own end-to-end network fabric design, deployment, and operation.
• Implement segmentation, firewalling, and multi-tenant isolation across zones.
• Lead automation and validation as code using Python/Ansible/gNMI.
• Collaborate across teams to ensure reliability, latency, and observability.

Skills

Network engineering

BGP/EVPN expertise

Automation with Python

Ansible

gNMI or vendor APIs

Self-directed workstyle

Tools

SONiC / Cumulus Linux / Arista EOS

Python

Ansible

gNMI

Job description

Circle B is building a sovereign EU GPU cloud from the ground up. You will own the end-to-end network fabric, delivering a lossless backbone across multi-zone segments, with proper isolation, routing, and security.

Expect to work with RoCEv2/InfiniBand, BGP/EVPN in spine-leaf architectures, and modern switches. You will automate configuration and validation with Python, Ansible, and gNMI, while driving telemetry and drift detection as code.