Senior Network Automation Engineer - Banking and Finance

Ready to work at the forefront of quantitative finance and technology?

Join a globally recognised high-frequency trading firm operating at the forefront of quantitative finance, where ultra-low latency infrastructure, automation, and engineering excellence are critical to success. This organisation operates across every asset class and time horizon, building advanced models, systems, and infrastructure that power real-time decision-making at scale. With a culture rooted in curiosity, precision, and continuous innovation, their team works from first principles to leveraging AI, machine learning, and high-performance technology to stay ahead.

They are looking for a Senior Network Automation Engineer to join their high-performance engineering team within a high-frequency trading environment. This is a hands-on, end-to-end role focused on taking ownership across networking, automation, infrastructure, and operational reliability, working in a lean London team. The position is ideal for engineers who want to design, build, and operate networks in a fully integrated environment, combining automation with production operations, rather than simply responding to tickets.

Step into a role where your work directly influences global trading outcomes, apply today!

Responsibilities

• Design, build, and operate low-latency network infrastructure supporting trading systems.
• Develop and maintain network automation tooling using Python and related frameworks.
• Work across networking, Linux infrastructure, and trading application connectivity.
• Own network performance, reliability, and optimisation across production systems.
• Troubleshoot complex issues across data centre and global network environments.
• Contribute to patching, upgrades, and continuous improvement of infrastructure.
• Collaborate with trading, development, and infrastructure teams.
• Support global network operations as part of a structured rota.

Required Skills

• Strong experience across networking, infrastructure, and automation.
• Ability to operate as an end-to-end engineer, not just a specialist in one area.
• Solid understanding of data centre networks and production environments.
• Experience with network automation and scripting (Python preferred).
• Strong Linux knowledge.
• Proven ability to troubleshoot and own complex systems.
• Background in financial services or similarly high-performance environments preferred.

Preferred Skills/Qualifications

• CCIE or equivalent level knowledge. Exposure to global infrastructure and multi-site networks.

Working Pattern

• London, five days per week onsite. EU network operations rota: one week in six (no weekend work, covered by a separate team).
• Occasional travel to other global offices.

Technical Environment

• Large-scale, low-latency data centre networks, network automation (Python), Linux systems, trading infrastructure and application connectivity, enterprise routing and switching.

Benefits

• Work in a high-performance, engineering-led environment. End-to-end ownership across networking, automation, and infrastructure.
• Lean team with high impact and visibility.
• Exposure to global trading infrastructure and cutting-edge systems.

Salary

• Base plus bonus, up to £500,000 total compensation depending on experience.