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Realtime Analytics and Controls Developer

XTX Markets
Realtime Analytics and Controls Developer
London, GB
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Job Description

The Firm

XTX Markets is an algorithmic trading firm that actively trades tens of thousands of instruments on over eighty venues with a daily volume of almost three hundred billion USD. We partner with counterparties, exchanges, and e-trading venues globally to provide consistent liquidity in the Equity, FX, Fixed Income, Commodity & Options markets, helping market participants throughout the world obtain the best prices in the various assets classes we cover.

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 maximise the effectiveness of our proprietary trading algorithms. 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. We are actively seeking new methods and ideas.

At XTX Markets technology is our business and we are a diverse organisation which attrcts 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 **

As a Realtime Analytics and Controls Developer, you will be responsible for the mission control panel for one of the largest trading systems in the world ($250bn-300bn/day). Your work will have a company-wide impact, with users including Trading Desk, Trading Developers, Quants, CEOs, Distribution and Risk.

The goal is to provide clarity about what our trading system (hundreds of thousands of strategies) is doing at any given moment and how it is performing. We supply both high-level and incredibly detailed views, as both are crucial for efficient decision making and spotting issues. In addition to visibility, we are also responsible for trading control mechanisms – e.g., tweaking limits, starting trading strategies or emergency stopping. These actions are necessary for continued trading, and sometimes need to be taken within minutes, with millions of pounds at stake.

Realtime Analytics and Controls is a small subteam of a front office development group maintaining a broad range of trading systems. You will be expected to also contribute to the shared software platform that supports this group. This is one of our most people-oriented engineering roles. You should expect to collaborate regularly with your colleagues who are the primary customers of your software, to understand how your design decisions affect their day-to-day work.


  • Communicate regularly with internal users about their needs and ideas.
  • Understand workflows of all teams involved in trading.
  • Design, implement and maintain software, including:
    • An Ingestion mechanism for large volumes of data from trading systems.
    • Internal frameworks for data processing and presentation.
    • In-memory query engines.
  • Present the data in a clear, useful, and accurate way, in collaboration with frontend developers.
  • Maintain calculation of trading metrics.
  • Build software that can reliably run 24/7.
  • Contribute to the platform of the wider front office development team.
  • Participating in the on-call rota of this team, expected to be one week in every eight.

Essential Attributes

  • Able to communicate with the users, understand and address their needs.
  • Fluent in a statically typed language, fluent in or willing to learn Kotlin.
  • Algorithmically literate and able to write efficient code.
  • Familiar with distributed systems – able to reason about consistency, delays etc.
  • Skilled in writing automated tests.
  • Passionate about reducing complexity.
  • Deeply caring about correctness and reliability.
  • Pragmatic and able to prioritise.
  • Proactive about taking responsibility.

Desirable Attributes

  • Familiar with high throughput JVM techniques.
  • Experience with binary protocols.
  • Proficient in working with databases.
  • Experienced in working with high stakes systems.



  • 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.
  • Various supports for caregivers, including emergency dependent care.
  • Beautiful Kings Cross office:
  • 25 days paid holiday per year + statutory holiday and paid sick days.
  • Generous Pension contributions.
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