Senior Network Engineer
Job Description
[Up to c. $350k Comp Package | Flexible Working Options]
Role Overview
We’re partnering with one of the world’s most advanced quantitative trading firms to hire a Senior Network Engineer who can help evolve and scale a truly global, ultra-low-latency network footprint. This team builds and operates a high-performance infrastructure spanning dozens of markets and locations, supporting 24/7 trading and research across the US, EMEA and APAC. This position combines architecture, engineering depth, and hands-on problem-solving. You’ll take ownership of routing design, WAN expansion, multicast distribution, new market connectivity, capacity planning, and lifecycle improvements across a rapidly growing environment. Expect to work alongside exceptional engineers, systems specialists, and trading operations teams, influencing decisions that affect real-time trading outcomes...
Key Responsibilities
- Design, build, and refine large-scale network architectures supporting low-latency trading, market data distribution, and global research workloads
- Own WAN strategy end-to-end - capacity planning, optimisation, vendor selection, route design, and ongoing performance tuning
- Deploy and integrate new exchanges, colos, and offices into the global network, ensuring predictable latency and full resiliency
- Analyse and troubleshoot challenging networking problems across routing, multicast, market data, wireless, optical, and WAN layers
- Improve reliability through monitoring, alerting, documentation, automation, and structured operational workflows
- Partner with Systems Engineering, Trading Operations, and software teams to ensure the network platform operates cleanly under peak load
- Contribute to roadmap planning around future connectivity, low-latency design, and on-prem expansion - including upcoming colo builds
- Influence internal tooling decisions and help standardise configuration, provisioning, and observability practices across a globally distributed estate
What You’ll Bring…
- 6+ years of hands-on experience operating and designing production networks (low-latency or trading environments strongly preferred)
- Deep understanding of L2/L3 protocols - OSPF, BGP, PIM, IGMP - and how to tune them for reliability and performance
- Strong track record operating devices from Arista, Cisco, Juniper, or similar high-performance vendors
- Broad troubleshooting expertise across Ethernet LAN, multicast distribution, global WAN routing, fibre-based connectivity, and wireless links
- Experience onboarding new markets, integrating exchange connectivity, and working with market-data distribution models
- Familiarity with packet analysis tooling (tcpdump, Wireshark) and the ability to break down issues at the frame/packet level
- Practical knowledge of datacentre fundamentals including cooling, rack power, cabling, and optics (SFP/QSFP, DWDM)
- Exposure to scripting or automation (Python, shell) and modern observability stacks (Prometheus, Grafana, ELK)
- Comfortable working in Linux environments - from CLI diagnostics to network stack inspection
- Understanding of firewalls, VPNs, NAT, and secure network segmentation
- (Preferred) Bachelor’s degree in Computer Science, Engineering or another highly technical field
- (Preferred) Experience with configuration-management tooling (Ansible, Salt)
...
Apply for this role
All fields marked with * are required.