Senior Network Engineer (AWS & Python)

In this Senior Network Engineer role, you will own the global production network for a high-availability, trading-focused environment. You will work with cross-location teams to maintain resilient, low-latency connectivity across data centres, offices, and cloud environments. The role emphasizes hands-on network engineering, incident ownership, and continuous improvement, with a strong focus on automation using Python and Ansible. You will contribute to standards while supporting follow-the-sun operations in London and New York.

• Own day-to-day network engineering and operations across global sites, data centres and cloud environments
• Support and maintain highly available, business-critical network infrastructure
• Troubleshoot complex network issues across routing, switching, firewall and connectivity layers
• Own network incidents from initial investigation through to resolution
• Plan and implement network changes within a controlled production environment
• Diagnose network performance, connectivity and routing issues
• Configure, troubleshoot and optimise routing protocols, particularly BGP and OSPF
• Identify potential network vulnerabilities, points of failure and resilience improvements
• Support connectivity across data centres, offices and cloud infrastructure
• Develop network automation using Python and Ansible
• Work collaboratively with global engineering and infrastructure teams

• Strong background in network engineering within complex enterprise, data centre or production environments
• Proven ability to support and maintain business-critical network infrastructure
• Strong technical knowledge of enterprise and data centre networking
• Hands-on understanding of: BGP, OSPF, Routing and switching
• Network resilience and high availability
• Network troubleshooting and incident resolution
• Ability to manage network changes within highly available production environments

• Team collaboration
• Strong communication
• Problem-solving orientation
• BGP
• OSPF
• Routing and switching