Low Latency Network Engineer.

Millennium Management; London; On-site; GBP 70,000 - 100,000; Full time

Job summary

A leading company in financial technology seeks an experienced Network Engineer to enhance its high-performance global networks. This role demands expertise in low-latency network technologies, routing protocols, and a solid background in network operations and automation. You will lead projects, innovate with cutting-edge technologies, and ensure robust network performance within a fast-paced trading environment.

Qualifications

• Minimum of 7 years’ experience in network engineering, operations, and support.
• Strong technical ownership in a global organization.
• Experience with telemetry and observability frameworks.

Responsibilities

• Manage global network projects from design to deployment.
• Configure, install, and support critical network infrastructure.
• Troubleshoot network issues and document IT procedures.

Skills

Low-Latency Network Technologies

Routing Protocols (BGP, OSPF)

Network Automation (Python, Ansible)

IP Networking

Troubleshooting

Linux Shell Scripting

Job description

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We are seeking an experienced Network Engineer to join our latency-critical trading infrastructure team. As part of a global follow-the-sun team of network engineers across North America, EMEA, and APAC, the Network Engineer will focus on the architecture, design, development, deployment, and support of Millennium’s high-performance global networks. These networks have extreme uptime requirements and utilize cutting-edge technologies. This role encompasses all aspects of networking, including datacenters, market data, co-location (co-lo), and proximity colocation sites.

• Senior Engineering Role:Focus on low-latency network technologies with a balanced mix of project work and operations in the low-latency trading environment, including Market Data, Trading, and co-lo design.
• Project Management:Own and manage global network projects from start to finish, including requirement gathering, design, cost analysis, implementation, and deployment.
• Innovation Leadership:Lead research and innovation efforts to introduce new network technologies into the firm, including RF technologies, low-latency transport, routing/switching, and compute technologies.
• Network Configuration and Support:Configure, install, maintain, and support critical network software and hardware components.Research, price out, and implement data circuits.Design and implement high-availability, low-latency Market Data networks.
• Operations and Troubleshooting:Deploy, support, and troubleshoot the network infrastructure.Document the IT infrastructure, policies, and procedures.Provide general user support and participate in after-hours work and an on-call rotation.

4. Qualifications/Skills Required

• Technical Expertise:Expert in low-latency network technologies, including Multicast (IGMP, PIM), L2/L3, and WAN design.Expert in routing protocols such as BGP and OSPF.Experience with Arista, Cisco, including Layer 1 switches.Knowledge of FPGA and high-performance computing technologies is a plus.Strong understanding of time synchronization protocols, including Precision Time Protocol (PTP, WR) and PPS, and their role in low-latency environments.Experience with network automation tools and frameworks, including Python, Ansible, or similar technologies.Experience leveraging AI/ML-driven tools for network performance optimization, anomaly detection, and predictive analytics. Understanding of AI frameworks and libraries (e.g., TensorFlow, PyTorch, Scikit-learn) and their application in network automation and monitoring.Experience with telemetry and observability frameworks (e.g., Prometheus, Grafana) for real-time network monitoring and troubleshooting.
• Experience:Minimum of 7 years’ of experience in network engineering, operations, and support.Proven ability to work hands-on and take strong technical ownership in a global organization.
• Networking and Troubleshooting:Expert knowledge of IP networking, TCP/IP, and troubleshooting.Experience with Python and Bash scripting to automate tasks.Strong Linux shell experience.
• Soft Skills:Strong interpersonal and written communication skills.Proven ability to operate in a fast-paced environment.Passion for delivering high levels of service and support to internal customers.