Senior Network Engineer

Architect, engineer and deliver across the QRT network estate with emphasis on colocation and ultra-low latency trading infrastructure; responsible for end-to-end lifecycle (architect, design, build, operate, retire) of core network components including switching, firewalls, load balancers, instrumentation, CMDB, and automation; capable of delivering complex, software-driven networks at scale with agile methodologies; deep knowledge of high-performance and low-latency networking, vendor ecosystems (Cisco, Arista, Fortinet), and WAN engineering with traffic prioritisation; will partner with project management and collaborate within the network team and wider organisation to ensure cutting-edge infrastructure and continual improvement.