Network Engineer - Selby Jennings

Our client is looking for a High-Frequency Network Engineer in London with up to seven years of experience. In this role, you will work on ultra-low latency network infrastructure, supporting their high-frequency trading (HFT) operations and high-speed networking, with a strong focus on reducing trading latency.

Your responsibilities will include designing, implementing, and optimizing high-speed networks for HFT connectivity. Additionally, you will be involved in low-latency network design, including RF link planning, site selection, and signal propagation.

• Design, implement, and optimize high-speed networks for HFT connectivity.
• Develop low-latency network solutions, including RF link planning, site selection, and signal propagation analysis.
• Configure, monitor, and troubleshoot routing and switching for high-performance trading environments.
• Collaborate with traders, developers, and infrastructure teams to maximize network efficiency.
• Conduct network performance analysis, latency tuning, and packet-level troubleshooting.

• 1-7 years of experience in high-frequency or low-latency networking, particularly microwave networks.
• Expertise in RF engineering, link budget analysis, and antenna alignment.
• Strong knowledge of network protocols (TCP, UDP, BGP, OSPF, multicast, PTP timing synchronization).
• Hands-on experience with network hardware (Cisco, Arista, Juniper) and low-latency optimization techniques.
• Proficiency in network performance tuning, latency measurement, and packet analysis (Wireshark, tcpdump, etc.).
• Familiarity with Linux networking, automation tools (Python, Bash, Ansible), and network monitoring solutions.
• Experience with Cloud Networking in AWS and GCP.