Senior Network Engineer

Role Responsibilities

• 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.

Requirements

• 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:
• 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 support within production environments, driving root cause and preventative measures.
• Engineering Discipline: Strong proponent of code quality, peer reviews, change control, and infrastructure versioning.
• Mellanox Ethernet switches with Cumulus Linux
• Juniper PTX core routers and SRX firewalls

Preferred Qualifications

• Industry certifications such as JNCIE, CCIE, or equivalent.
• Familiarity with network security frameworks and best practices.
• Experience with hybrid cloud and cloud connectivity solutions (e.g. AWS/Azure Direct Connect).
• Exposure to observability platforms and time-series databases (e.g. Grafana, Prometheus, InfluxDB).

Qualities we look for

Why should you join us?