Ultra-Low Latency Network Architect (HFT)

Tradermath; New York (NY); On-site; USD 200,000 - 300,000; Full time

Job summary

Hudson River Trading is seeking a senior infrastructure-focused engineer to design, build and maintain ultra-low latency trading networks. The role involves running a dedicated lab, building automated benchmarks, and co-location across global sites to optimize market data delivery.

You will work with kernel-bypass stacks, FPGA/NIC hardware, and time synchronization systems while expanding lab testing capabilities and monitoring stacks for performance trends and anomalies.

Qualifications

• 10+ years designing and operating ultra-low latency networks within HFT, market making, or quantitative fund environments.
• Advanced Python skills using libraries like pandas, numpy, or pyarrow to parse large PCAP datasets and analyze time-series telemetry.
• Hands-on experience building network testing labs with hardware traffic generators and packet capture tools.
• Expertise with Arista, Cisco Nexus switches, LDA L1 switches, AMD Solarflare, and NVIDIA Mellanox hardware.
• Deep knowledge of BGP/OSPF, Linux network stack tuning, PTP/IEEE 1588, White Rabbit, multicast topologies.
• Proficiency with Ansible, SQL and Python network automation tools and observability stacks such as Prometheus, Grafana, and Docker.

Responsibilities

• Hardware Evaluation & Lab Testing: Establish and run a dedicated network testing lab and benchmark frameworks.
• Network Data Analysis & Telemetry Pipeline: Build Python pipelines to process PCAPs, telemetry data, and latency reports.
• HFT Architecture & Co-location: Architect and maintain low latency trading networks across colocation sites.
• Kernel Bypass & Acceleration: Work with kernel-bypass stacks and hardware accelerators to minimize overhead.
• Time Synchronization: Oversee PTP and White Rabbit time systems.
• Routing and Switching: Design and maintain large-scale L2/L3 topologies with tuned routing protocols.
• Maintain Industry Awareness: Evaluate new hardware/software to improve network performance.

Skills

Ultra-low latency nets

Python data analysis

Lab testing experience

Networking hardware expertise

BGP/OSPF & L2/L3

Automation tools

Tools

Spirent/Ixia

Scapy

Netmiko

AsyncIO

Docker

Prometheus

Grafana

VictoriaMetrics

Job description

Hudson River Trading is seeking a senior infrastructure-focused engineer to design, build and maintain ultra-low latency trading networks. The role involves running a dedicated lab, building automated benchmarks, and co-location across global sites to optimize market data delivery.

You will work with kernel-bypass stacks, FPGA/NIC hardware, and time synchronization systems while expanding lab testing capabilities and monitoring stacks for performance trends and anomalies.