Electronic Trading Network & Systems Engineer

James Joseph Associates Limited; City Of London; Sur place; GBP 110 000 - 150 000; Plein temps

Résumé du poste

James Joseph Associates Limited is seeking a Senior Low Latency Network & Systems Engineer to own and optimise ultra-fast trading infrastructure across Linux servers, colocation facilities and AWS.

You will design, build, and continuously improve a technically demanding environment where microseconds matter for trading performance and reliability.

Qualifications

• Experience in latency-sensitive trading environments such as HFT or electronic market making.
• Strong Linux-based infrastructure engineering and optimisation in low-latency settings.
• Deep understanding of Linux internals, performance tuning, CPU pinning, NUMA and kernel optimisation.
• Advanced networking knowledge including BGP, multicast, TCP/IP and AWS networking.

Responsabilités

• Design, build and optimise low-latency infrastructure for high-frequency trading platforms.
• Improve network connectivity and trading system performance while minimising latency, jitter and packet loss.
• Configure and tune Linux systems for peak performance including CPU affinity and kernel bypass.
• Engineer and maintain high-performance networking across data centres, colocation facilities and AWS.
• Optimise connectivity to trading venues and exchanges with providers to improve reliability and speed.
• Develop automated provisioning with Terraform, Ansible and scripting for deployment.
• Implement monitoring and performance analysis to identify bottlenecks and latency spikes.
• Work with high-performance NICs and network hardware to improve throughput.
• Collaborate with trading, development and infra teams to boost stability and resilience.

Connaissances

Latency-sensitive trading

Linux performance tuning

Networking (BGP, multicast, TCP/IP)

Python scripting

Terraform/Ansible

Observability/Monitoring

Colocation/high-performance hardware

Outils

Terraform

Ansible

Python

Linux networking tools

AWS networking

Description du poste

Our client is a prestigious buy-side electronic trading business. Additional headcount has been approved for a Senior Low Latency Network & Systems Engineer to help develop and optimise its high-performance trading infrastructure.

This is an opportunity to work on technically demanding infrastructure where network performance, system efficiency and execution speed are critical to trading performance.

You will take ownership of engineering and optimising ultra-low-latency infrastructure spanning Linux servers, high-performance networks, physical colocation environments and AWS cloud infrastructure.

The role offers significant technical ownership, with the opportunity to influence infrastructure architecture, introduce new technologies and deliver measurable improvements in trading system performance.

WHY CONSIDER THIS OPPORTUNITY?

This is a senior, hands-on engineering opportunity within a technologically sophisticated global trading environment.

You will be working on infrastructure where improvements measured in microseconds can have a direct impact on trading performance.

The position offers the opportunity to work with advanced networking technologies, solve complex infrastructure challenges and take meaningful ownership of critical trading systems.

The package includes exceptional bonus opportunities and a wider benefits offering.

KEY RESPONSIBILITIES:

• Design, build and optimise low-latency infrastructure supporting high-frequency and electronic trading platforms.
• Improve network connectivity and trading system performance, minimising latency, jitter and packet loss.
• Configure and tune Linux systems for maximum performance, including CPU affinity, NUMA optimisation, kernel tuning and kernel bypass.
• Engineer and maintain high-performance networking across physical data centres, colocation facilities and AWS environments.
• Optimise connectivity to trading venues and exchanges, working with network providers to improve reliability and execution speeds.
• Develop automated infrastructure provisioning and deployment processes using Terraform, Ansible and scripting technologies.
• Implement monitoring and performance analysis tools to identify network bottlenecks, latency spikes and infrastructure issues.
• Work with high-performance network hardware, including low-latency switches and network interface cards (NICs).
• Collaborate with trading, development and infrastructure teams to continuously improve system performance and resilience.

SKILLS & EXPERIENCE REQUIRED:

Essential experience:

• You will have experience supporting latency-sensitive trading environments, including HFT, proprietary trading, electronic market making or similar high-performance financial systems.
• Strong experience engineering and optimising Linux-based infrastructure in high-performance, low-latency environments.
• In-depth understanding of Linux internals, system performance tuning, CPU pinning, NUMA and kernel optimisation.
• Advanced networking knowledge, including BGP, multicast, TCP/IP and AWS networking
• Experience working with physical servers, colocation infrastructure and high-performance networking equipment.
• Strong scripting and automation skills using Python, Bash, Terraform and/or Ansible.
• Experience troubleshooting complex infrastructure performance issues, including latency, packet loss and network congestion.
• Ability to take ownership of technically complex infrastructure projects from design through to implementation.

Additional experience that would be advantageous:

• Kernel bypass technologies and advanced Linux network optimisation.
• High-performance NICs and specialist networking hardware from vendors such as Arista or Cisco.
• Infrastructure supporting algorithmic trading, exchange connectivity or real-time market data.
• Experience optimising performance across hybrid cloud and bare-metal infrastructure.
• Working with specialist low-latency connectivity providers and data centre cross-connects.
• Exposure to cryptocurrency or digital asset trading infrastructure