The quant research team is responsible for the design and estimation of the statistical models behind all of our trading.

This is a very challenging task due to the highly competitive and continuously changing nature of financial markets.

The data we use consist of trillions of noisy observations. To make sense of it, we deploy state of the art machine learning techniques and have at our disposal a large cluster of computational resources.

My favourite aspects of the job are the technical challenges it presents, the opportunities it offers to keep learning, and how collegiate and collaborative the team is.

Our team works closely with the quant team to take models from a MATLAB prototype to trading tens of thousands of instruments on nearly a hundred exchanges around the world. We’re a small, close-knit team and we cover the entire tick-to-trade flow, from processing incoming market data to evaluating trading signals to submitting orders.

Our systems have to be able to process an incredible amount of incoming data in real-time without queueing, with market data from major exchanges frequently amounting to tens of gigabits per second. No technology is off-limits to us, we’ll use whatever is the best tool for the job, although our favourite languages are C++ and Python.

The OTC trading development team builds XTX's client-facing/OTC platforms. Our OTC market-making system offers continuous liquidity across multiple asset classes and thousands of instruments. It speaks around a hundred market data and trading protocols. We also build a range of in-house systems for real-time performance monitoring and analysis of XTX's trading activity, which generates millions of events per second.

Our team is drawn from a range of financial and non-financial backgrounds. We specialise in building high performance, highly available distributed systems. We are given a high degree of autonomy to meet requirements with the software and hardware that we see fit.

Our team is responsible for the Core Technology platform, supporting all aspects of the firm’s post-trade activities and primarily developed in Go. We maintain highly-available real-time systems and a host of tools, jobs, services and GUIs to enable us to operate effectively in a highly automated way. The broad range of functions we support means we collaborate with almost every department in the firm.

What I value most about working at XTX is the firm’s commitment to quality software engineering. We look to build solutions that stand the test of time and scale with the needs of the business.

The infrastructure group builds, looks after and improves three types of technology infrastructure. We need our general office and datacentre environment to always work and scale with our rapid growth. Our trading colocations are expressions of precise and deterministic computational performance. Our research cluster has doubled in size every year, and achieves unbridled storage and compute width.

Our group consists of experts in linux, storage, network, windows, database, technologies and procurement, and given the scale of what we manage, we rigorously automate and solve our problems with code. Even with 25 years’ experience in computational finance, at XTX I learn new technologies directly or from my colleagues every single day I work.

The distribution team is responsible for building and maintaining institutional client relationships at the firm. We work with a number of different client types (hedge funds, real money managers, regional banks and retail aggregators) across a number of different asset classes (FX, metals and cash equities).

I enjoy the role as each client’s needs are unique and we explain not just what the firm can deliver for them in terms of XTX‘s market leading liquidity but also how market microstructure works, how to better manage their liquidity, how regulations are evolving and how using data analytics can help them to lower their cost of execution.

I also really enjoy working closely with the trading analyst and quant teams to help solve any client queries.

The onboarding team works with external clients, platforms and vendors on integration to facilitate trading of our OTC products.

Dealing with technical integrations, while working closely with external clients, has always ticked the boxes for me personally, and it’s great to go home at the end of the day knowing that we have delivered solutions to our business and clients.

Every day is different and although there are never enough hours in the day, I’m one of those people who enjoy working in a busy and productive environment. The firm is highly collaborative and the hierarchy and bureaucracy that can hinder other companies is non-existent, meaning that I am trusted to do my best and to enact change and progress. I have never been as productive as I am here and I put this down to being given the responsibility and environment in which I can flourish.

The operations team supports our cross-asset operations, reconciling and checking that the millions of trades we transact are accounted for and confirmed with all of our counterparties on a real-time basis. The team also ensures our risk exposures and positions with each of our counterparties are being managed correctly. We have developed robust, scalable solutions and are constantly improving our efficiency as a result, whilst maintaining absolute accuracy with our data and reporting.

It is challenging work in a fast-paced environment, where no two days are ever the same and, for me, this is what it’s all about. I enjoy seeing processes I have refined being implemented and seeing the immediate results.

The Legal Department is responsible for managing and mitigating XTX’s legal risk and is closely integrated with the business. We have a very diverse range of work and responsibilities including documenting agreements with all external counterparties, overseeing the governance and management of all XTX group corporate entities, assisting with the interpretation and implementation of upcoming regulation and legislation, due diligence and execution of investments by XTX Ventures, representing XTX on various industry working groups and advising the business on all manner of legal queries.

XTX is at the forefront of the technological innovation occurring in financial markets which means that we also need to be innovative, commercial and practical in the advice that we provide. The work is intellectually challenging, often ground breaking, and we operate in a highly collaborative and fast-paced environment, working closely with all departments and senior management to achieve the firm’s objectives.

The role of the Risk team is to support and independently challenge the firm’s management of risk, and to provide direction on the design and operation of the overall risk framework. XTX is an extremely risk-focussed firm, and risk awareness is integral to the way every team operates.

The main risks faced by XTX are operational and market-related. Good risk management depends on the close consideration of problems from different angles, and the team have backgrounds in maths, computer science and economics. This mix of disciplines enables us to select appropriate data sources to prove or disprove assertions, collaboratively asking “what if…?”, and using the resulting insights to test business assumptions.

For me, the role combines two areas of deep interest: I spent the first decade of my career in IT as a programmer, and the last ten years have been in Risk. The work at XTX is very varied, the people are super-bright, and the flat hierarchy means that decisions can be taken and implemented very rapidly. It’s a great place to work.