Software Engineer | Backend - (Core Data Platform) | London

Backend / Software Engineer (Core Data Platform) | London

£140k-£180k base + stock options | 4 days a week in the office

You'Ve built systems where performance matters. What if you could bring that experience to the data infrastructure behind AI?

A fast-growing AI data platform company is hiring backend engineers to build the core technology that helps AI teams work with massive, complex datasets. The problems are hands-on and performance-critical: custom databases, huge searches, streaming ingestion, and re-synchronising and preprocessing training data.

They're especially interested in engineers from HFT or quantitative trading who have worked on platform or core engineering teams. The opportunity is to take that engineering experience into a fast-moving field, with plenty to build and room to shape the platform.

The work

• Build foundational parts of the core data platform where performance matters
• Work on custom database technology and large-scale search
• Solve challenges in re-synchronising and preprocessing training data
• Partner with ML researchers to build the infrastructure their work needs

You could be a fit if you

• Have experience in HFT or quantitative trading on a platform or core engineering team
• Have strong computer science fundamentals and distributed systems experience
• Are strong in Python and fluent in Rust or C++
• Have worked with large databases, data streams or other data-heavy systems
• Care about performance and enjoy building systems that make a measurable difference

Join early enough to shape a high-performance data platform from the ground up, with the backing and ambition of a company already scaling fast. You’ll stay hands-on, solve problems where performance really matters, and help set the technical direction as the team grows.

Location and package

London | 4 days a week in the office

£160k-£200k base salary + stock options

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