Our client, a global leader in institutional liquidity and digital assets, is seeking a systems and networking specialist with deep expertise in High Frequency Trading. In this role, you will own the end-to-end optimisation of a globally distributed, ultra-low-latency trading stack, spanning hardware, networking, and operating systems. This is a high-impact position where your work will directly shape execution speed, determinism, and reliability across a world-class crypto exchange platform.
The ideal profile will come from a high-frequency trading environment, with strong Linux fundamentals, an automation-first mindset, and hands-on experience with performance-critical infrastructure. You will be highly execution-focused, comfortable operating close to the metal, and driven by extracting microsecond-level performance gains that materially impact desk-level trading outcomes.
Responsibilities:
* Low-latency Infrastructure Build: Design and deploy HFT-grade infrastructure optimised for ultra-low-latency connectivity to crypto exchanges and internal systems
* Hybrid Cloud Optimisation: Optimise performance across AWS environments and physical hardware in colocation data centres
* System Performance Tuning: Apply deep Linux kernel and OS-level optimisations to reduce jitter and maximise determinism
* Network Automation: Build zero-touch deployment pipelines using Terraform and Ansible for reproducible, reliable infrastructure
* Precision Monitoring: Implement microsecond-level observability to track latency, packet loss, jitter, and retransmissions
Requirements:
* Low-Latency DNA: Proven experience in HFT or ultra-low-latency environments where microseconds are critical
* Linux Mastery: Strong knowledge of system internals including CPU pinning, NUMA, kernel bypass, and profiling
* Advanced Networking: Deep understanding of BGP, multicast, and AWS networking primitives
* Automation-First Mindset: Proficiency in Python/Bash and Infrastructure as Code (Terraform) for global deployments
* Hardware Savvy: Hands-on experience with high-performance NICs, low-latency switches (Arista/Cisco), and data centre environments