Senior Network Engineer

About Ori

Ori is setting a new standard for how AI worlds are built. We are the first AI Infrastructure provider with the native expertise, comprehensive capabilities, and end‑to‑end flexibility to support any model, team, or scale. As a fast‑growing startup backed by leading investors, we value ambition, accessibility, and collaboration, and are committed to pushing the boundaries of what’s possible in the field of AI.

Join our close‑knit, global team and help us build the future of AI infrastructure!

As a Senior Network Engineer, you’ll design, deploy, and operate the high-performance, low-latency network fabric that underpins our GPU infrastructure. You’ll play a critical role in shaping the architecture, automation, and operational standards of our network, ensuring it meets the rigorous demands of modern AI training and inference workloads.

The ideal candidate is a strong advocate of engineering excellence and operational best practices. You’re customer-focused, collaborative, and equally comfortable discussing technical issues with enterprise customers, internal teams, and cross-functional stakeholders. You’ll contribute to everything from design and implementation through to L3/L4 operational support.

• Network Architecture &
  
  Collaboration:
  
  Design scalable leaf‑spine networks using Mellanox switches with Cumulus Linux, integrated with Juniper PTX routers and SRX firewalls. Lead 3rd‑party and internal provider collaboration to deploy resilient site‑to‑site and internet connectivity, optimise topology, and resolve complex faults.
• Operations & Maintenance:
  Perform configuration, upgrades, and deep troubleshooting of Juniper and NVIDIA/Cumulus devices in production environments.
• Software‑Defined Networking (SDN):
  Implement programmable network designs using controller‑based platforms to support automation and scalability.
• Kubernetes Networking:
  Support networking within container platforms using CNIs such as Calico, Cilium, or Kube‑OVN. Understand microservices traffic patterns and service mesh integrations.
• Automation & Scripting:
  Develop and maintain Ansible playbooks and Python automation for configuration management, provisioning, and compliance, including working against API interfaces of network equipment.
• Monitoring & Telemetry:
  Implement observability tools using SNMP, sFlow, and gRPC to detect and address network bottlenecks at scale.
• Incident Management:
  Lead L3/L4 network incident response, escalation management and root cause analysis in high‑pressure, 24×7 production environments.
• Stakeholder & Customer Engagement:
  Act as a trusted technical expert, engaging directly with internal stakeholders and enterprise customers. Present solutions and troubleshoot effectively across all levels of the organisation.
• Engineering Excellence:
  Promote and uphold best practices in configuration management, change control, documentation, and continuous improvement.

• HPC/AI Networking: 3–5 years’ experience supporting high‑throughput, low‑latency infrastructure for GPU‑based or HPC clusters.
• 8–12+ years in networking, often with at least 5 years in globally distributed environments.
• Experience with multi‑region or multi‑continent backbone networks, transit/peering, and high‑availability design at Internet scale.
• Hands‑on with large‑scale routing (BGP/MPLS), automation at scale, and often SDN or custom orchestration frameworks.
• Routing & Switching:
  Strong understanding of BGP, EVPN, VXLAN, and Data Centre Interconnects (DCI).
• Hardware Platforms:
  Mellanox Ethernet switches with Cumulus Linux;
  Juniper PTX core routers and SRX firewalls.
• Cloud‑Native Networking:
  Proficiency with Kubernetes networking and container‑based infrastructure, including CNIs (e.g. Calico, Cilium).
• Linux Proficiency:
  Confident with CLI environments, scripting, and diagnostics.
• Automation & Tooling:
  Experience with Ansible and Python. Familiarity with Terraform or similar infrastructure‑as‑code tools is a plus.
• Customer‑Facing
  
  Skills:
  
  Comfortable explaining complex networking concepts to customers and internal stakeholders, from engineers to executives.
• Operational Support:
  Hands‑on experience in L3/L4…