HFT System & Network Specialist

About the role

We are seeking a highly specialised HFT System and Network Engineer to join our trading infrastructure team. In this role, you will bridge the gap between our cutting-edge AWS environments and physical colocation facilities. You will be responsible for the end-to-end optimisation of our global trading stack: minimising tail latency, optimising cross-region connectivity, and automating the deployment of performance-tuned “bare metal” and cloud instances.

Jobs to be Done

• Low-latency Infrastructure Build: Architect and deploy HFT-grade stacks, focusing on low-latency connectivity to crypto exchanges and internal networking alike
• Hybrid Cloud Optimisation: Manage the interplay between AWS servers and physical hardware in traditional colocation centres
• System Performance Tuning: Implement deep-level Linux kernel optimisations to minimise jitter and improve performance
• Network Automation: Develop “Zero-Touch” deployment pipelines using Terraform and Ansible to ensure infrastructure is reproducible and error-free
• Precision Monitoring: Instrument the network for microsecond-level visibility, tracking packet loss, jitter, and retransmissions
• Connectivity Management: Coordinate with exchanges and providers to manage cross-connects, LOAs, and high-speed transit lines

Required Skills and Experience

• Low-Latency DNA: Proven experience in HFT or ultra-low latency environments where microseconds matter
• Linux Mastery: Deep knowledge of system internals (CPU pinning, NUMA, kernel bypass) and performance profiling
• Advanced Networking: Expert understanding of BGP, Multicast, and AWS networking
• Automation-First Mindset: Proficiency in Python/Bash and Infrastructure as Code (Terraform) to manage complex global deployments
• Hardware Savvy: Comfort working with high-performance NICs, low-latency switches (Arista/Cisco), and physical data centre requirements
• Execution-Driven: A clear, concise communicator who thrives in high-pressure environments and takes ownership of the entire infra lifecycle

What we offer

• An amazing global culture, who are ambitious, innovative and fun while working with the highest levels of honesty and integrity.
• Two discretionary bonus awards a year.
• A range of benefits in line with local market practice.
• Regular fun events and activities, as well as Social Impact volunteering days.

• Low-Latency DNA: Proven experience in HFT or ultra-low latency environments where microseconds matter
• Linux Mastery: Deep knowledge of system internals (CPU pinning, NUMA, kernel bypass) and performance profiling
• Advanced Networking: Expert understanding of BGP, Multicast, and AWS networking
• Automation-First Mindset: Proficiency in Python/Bash and Infrastructure as Code (Terraform) to manage complex global deployments
• Hardware Savvy: Comfort working with high-performance NICs, low-latency switches (Arista/Cisco), and physical data centre requirements
• Execution-Driven: A clear, concise communicator who thrives in high-pressure environments and takes ownership of the entire infra lifecycle