Flow Traders is looking for an experienced Network Engineer to join a high-performance team, owning the design, deployment, and reliability of the firm’s global trading network across data centers, exchange colocation environments, and cloud. The infrastructure delivers low-latency, high-availability connectivity for trading systems and market data, with deterministic performance under any conditions. As a senior hands-on engineer, you continuously evolve the network architecture, respond to operational queries and incidents, and drive improvements across the stack. You challenge the status quo and push beyond traditional networking by shaping observability and automation, working closely with internal teams to ensure alignment and interoperability across networks, systems, and applications. What you will do Design, build, and operate a hybrid low-latency / big-data global network infrastructure spanning major exchange venues, WAN connectivity (fiber and RF), cloud, and data center fabrics. Safeguard trading continuity: proactively detect and resolve issues using deep network visibility, deliver controlled and validated changes, and enforce rigorous testing to maintain stability in a latency-sensitive, high-availability environment. Drive network performance optimization: leverage packet-level visibility (captures, microbursts, queueing, packet loss) to implement targeted improvements and provide actionable insights across teams. Engineer advanced network observability: integrate telemetry streams (sFlow/flow data, SNMP, API-sourced insights) into structured, queryable datasets, correlating data across sources to enable deep analytics and automation-driven operations. Advance production-grade network automation: expand and mature the automation stack to reduce BAU workload and operational risk, replacing manual processes with reliable, validated workflows while leveraging modern approaches (Python, orchestration, AI/LLMs, agentic tooling). Collaborate withou