Senior Network Engineer
Job Description
[Up to c. $450k Comp Package (or equivalent) | Office-Led Working]
Role Overview
We’re representing a leading quantitative trading firm with a global technology footprint across major financial markets. The business relies on highly resilient, performance-sensitive infrastructure to support trading, research, office connectivity and distributed systems at scale. This is a senior engineering role within the global network team, focused on designing, scaling and improving complex multi-vendor network environments. You’ll work across data centre builds, colocation connectivity, WAN design, routing optimisation, automation and operational tooling, with a strong emphasis on reliability, documentation and continuous improvement.
The role is well suited to someone who combines deep networking fundamentals with a strong engineering mindset - someone comfortable working close to Linux, automation, scripting and emerging AI/ML-led approaches to improving network operations...
Key Responsibilities
- Design, deploy and improve global network infrastructure across trading, data centre, office and colocation environments
- Partner with engineering, infrastructure, trading and business stakeholders to understand requirements and translate them into scalable network solutions
- Lead routing, WAN, data centre and connectivity improvements across a highly available multi-vendor estate
- Support critical production environments while driving longer-term improvements to reduce operational risk and improve troubleshooting
- Build, maintain and improve automation workflows to simplify repetitive tasks and improve consistency across the network estate
- Explore practical uses of AI/ML tooling to improve observability, operations, documentation and service quality
- Produce clear, detailed documentation that supports faster troubleshooting, stronger knowledge sharing and better team efficiency
- Troubleshoot complex network and transport-layer issues across protocols, devices and distributed systems
- Work closely with global teams to maintain high standards for performance, resilience and reliability
What You’ll Bring…
- 7-12 years’ experience operating, supporting and deploying complex network infrastructure, including 3+ years designing networks from the ground up
- Strong routing and protocol knowledge across BGP, OSPF, PIM-SM and TCP/UDP
- Hands-on experience across large-scale LAN, WAN, data centre or colocation environments
- Comfortable working in Linux environments and using the command line to investigate, troubleshoot and operate systems
- Proficiency in at least one programming or scripting language, ideally Python, Bash or similar
- Experience with monitoring, observability or configuration management tooling such as Ansible, Salt, Terraform, Prometheus, Grafana or ELK
- Strong bias towards automation, standardisation and reducing manual operational overhead
- Ability to manage multiple priorities in a fast-moving, high-stakes technical environment
- High ownership, strong judgement and a practical approach to solving complex technical problems
- (Preferred) Experience with overlay networking such as EVPN or VXLAN
- (Preferred) Exposure to low-latency, trading, market data, HPC, AI infrastructure or other performance-sensitive environments
...
Apply for this role
All fields marked with * are required.