Senior WAN & Backbone Network Engineer
Europe,
United Kingdom,
London,
United States,
New York
Permanent
Job ID: 2483
Job Description
[Up to c. $400k Comp Package (or equivalent) | Hybrid Working]
Role Overview
We’re supporting a leading quantitative trading firm operating at the cutting edge of high-performance computing. This opportunity sits within a specialist networking group responsible for building and evolving the global connectivity layer that underpins both research platforms and live trading systems. This role centres on designing and scaling a high-capacity, globally distributed WAN that connects data centres and co-location environments. The emphasis is on performance, resilience, and automation - ensuring the network can support extremely demanding workloads with consistency and efficiency...
Key Responsibilities
- Define and evolve the architecture of a global WAN connecting data centres, HPC clusters, and trading environments
- Plan and scale network capacity to support significant growth in data transfer and compute demand
- Develop advanced routing and traffic engineering strategies to maximise performance and stability
- Build and maintain automation frameworks to manage network configuration and deployment at scale
- Assess traffic patterns and optimise network utilisation across regions and services
- Collaborate closely with systems, infrastructure, and research teams to align network capabilities with application needs
- Lead diagnosis and resolution of complex network issues across distributed environments
- Contribute to hardware strategy, vendor selection, and long-term network roadmap decisions
- Maintain high-quality technical documentation covering architecture, standards, and operational processes
- Provide technical leadership within the team, supporting and mentoring other engineers
What You’ll Bring…
- 8+ years’ experience working with large-scale WAN or backbone network environments
- Proven experience in performance-critical environments such as trading, HPC, telecoms, or large-scale distributed systems
- Strong knowledge of network performance tuning, QoS strategies, and telemetry in high-throughput systems
- Experience working across multi-vendor networking environments (e.g. Arista, Cisco, Juniper)
- Deep understanding of routing and traffic engineering concepts (e.g. BGP, MPLS, segment routing, IGP protocols)
- Solid scripting and automation capability (Python, Ansible, Terraform or similar)
- Strong familiarity with Linux networking and system-level diagnostics
- Experience with packet-level analysis and debugging tools
- Working knowledge of cloud networking principles (AWS, GCP, or Azure)
- (Preferred) Experience with monitoring/observability stacks such as Prometheus, Grafana, or ELK, and/or exposure to optical or DWDM networking technologies
...
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