Low Latency Network Engineer

Overview

In this role you will design and operate high-performance, latency-sensitive networks for trading and market data at Millennium. You’ll own global network projects end-to-end and drive the adoption of advanced technologies to support a fast-paced, multi-manager environment. You’ll work closely with cross-functional teams to ensure highly available connectivity and rapid incident resolution. This position offers impact through optimizing data circuits, colocation, and time-sensitive networking at scale. Join a team that blends innovation with disciplined risk management to accelerate investment outcomes.

Responsibilities

• Engineer low-latency network solutions for trading, market data, and colocation environments
• Own global network projects from requirements gathering and design through cost analysis, implementation, and deployment
• Lead research and evaluation of new network technologies, including RF, low-latency transport, routing, switching, and compute technologies
• Configure, install, maintain, and support critical network hardware and software
• Research, evaluate costs for, and implement data circuits to meet connectivity requirements
• Design and implement highly available, low-latency market data networks
• Deploy, monitor, and troubleshoot network infrastructure, providing hands-on technical ownership and responsive user support
• Maintain infrastructure documentation, policies, and procedures, and participate in after-hours work and an on-call rotation

Key requirements

• At least seven years of experience in network engineering, operations, and support, with hands-on ownership in a global organization
• Expert knowledge of low-latency networking, including multicast protocols such as IGMP and PIM, Layer 2 and Layer 3 networking, WAN design, BGP, and OSPF
• Experience with Arista and Cisco technologies, including Layer 1 switches; FPGA and high-performance computing knowledge is a plus
• Strong understanding of time synchronization technologies (Precision Time Protocol, White Rabbit, PPS) in low-latency environments
• Expert IP networking and TCP/IP troubleshooting, strong Linux shell experience, and proficiency with Python, Bash, and Ansible
• Experience applying AI/ML tools to network performance optimization, anomaly detection, and predictive analytics (TensorFlow, PyTorch, scikit-learn)
• Experience using telemetry and observability frameworks (Prometheus and Grafana) for real-time network monitoring and troubleshooting
• Strong interpersonal and written communication skills for fast-paced internal customer service

• Strong communication
• Customer-focused service
• Collaborative mindset
• Multicast (IGMP, PIM)
• Layer 2/3 networking
• BGP

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