Software Engineering Intern (Data Platform) - Summer 2026

The Firm

XTX Markets is a leading algorithmic trading firm which uses state-of-the-art machine learning technology to produce price forecasts for over 50,000 financial instruments across equities, fixed income, currencies, commodities and crypto. It uses those forecasts to trade on exchanges and alternative trading venues, and to offer differentiated liquidity directly to clients worldwide. The firm trades over $250bn a day across 35 countries and has over 250 employees based in London, Singapore, New York, Paris, Bristol, Mumbai, Yerevan and Kajaani.

We leverage the talent of the people who work here, modern computational techniques and state-of-the-art research infrastructure to analyse large data sets across markets quickly and efficiently, to maximize the effectiveness of our proprietary trading algorithms. We are actively seeking new methods and ideas. The models that drive our trading strategies have evolved considerably over the last 10 years, from econometric methods that gave our company its name, to trees, to neural networks, to modern deep learning architectures.

XTX Markets has an unrivalled level of computational resources in the trading industry, with a growing research cluster currently containing over 25,000 GPUs with 650 petabytes of usable storage. Teams across the firm include world-class researchers with backgrounds in pure math, programming, physics, computer science and machine learning. The firm is also constructing a large-scale data centre in Finland to future-proof its significant computational capabilities.

At XTX Markets technology is our business and we are a diverse organization which attracts outstanding talent from across all industry backgrounds. We are focused on teamwork and our people collaborate on all aspects of the business, working openly and with respect for each other, our clients and the market. Our culture is non-hierarchical and one where everyone is valued. We strive for excellence in everything we do.

The Role

The Data Platform team will host 1 intern for 10-12 weeks in Summer 2026. (Start-date flexible).

The Data Platform team is building a system for processing and managing the daily data that is used throughout the firm including symbology, corporate actions, fundamentals, and index membership data. We build automated pipelines to ingest, process, and error correct third party data and make it available to internal users. The team believes in deploying frequent incremental improvements and holds data accuracy and timely delivery as its core principles. The primary development language for back-end services is Go and UI development is done in TypeScript.

Project: We are building out our Search and UI infrastructure. By leveraging technologies like Solr and Kafka we push real time updates that give our users immediate and comprehensive view of the latest data. We believe in minimal yet powerful UIs

that communicates the essential information to our users.

Essential Attributes

You should be in your penultimate year of university study, with a strong preference for Mathematics, Computer Science or Physics related courses.

You should have completed software development projects outside of your university coursework.

We have a preference for those with work experience of any kind (i.e. even a part-time role outside of industry or field).

Application Notes

Please prepare a CV and answer all questions on the application form. You’re also welcome to attach a supporting cover letter. We can be slightly flexible on start dates, but all internships will take place in Summer 2026, and we are not able to offer off-cycle internships.

We expect to receive a high volume of applications for our Summer 2026 internships. Whilst we are happy to consider your application for more than one opening, we ask that you only submit one application. We will reallocate you if appropriate based on the preferences listed on your application form.

Please Note – XTX does not run a graduate program, and the successful completion of an internship does not necessarily result in a full-time role upon graduation. We offer internships to provide insight into the inner workings of a leading algorithmic trading firm.

Applications will close on the 21st September. If your application is shortlisted and the team would like to move forwards with an interview, you will hear back from us during the final week of September.

Benefits

*Onsite gym, sauna, and fitness classes at no charge.

*Extensive medical benefits including an on-site doctor and therapist at no charge.

*Breakfast and lunch provided daily.

*Beautiful Kings Cross office: https://vimeo.com/257888726