Realtime Analytics and Controls Developer
About this role
XTX Markets needs a Realtime Analytics and Controls Developer to build and maintain the mission control panel for one of the largest trading systems globally, managing between $250bn and $300bn daily. This hire will solve the challenge of providing absolute clarity on what hundreds of thousands of concurrent trading strategies are doing, supplying both high-level summaries and granular views for rapid decision-making.
Operating within a small specialist team, this person will design software that handles massive data ingestion, powers in-memory query engines, and delivers essential trading control mechanisms like emergency stops and limit adjustments. Users of these systems range from the trading desk and quants to the CEO and risk management.
An ideal candidate combines at least five years of professional Java or C++ coding experience with strong communication skills and a pragmatic approach to prioritizing user needs. Someone who thrives in a collaborative, non-hierarchical environment and cares deeply about reliability, correctness, and system resilience will succeed here.
What you will do
- Communicate regularly with internal users to understand their needs, gather feature requests, and prioritize them according to business requirements.
- Design, implement, and maintain ingestion mechanisms for large volumes of data sourced directly from trading systems.
- Build internal frameworks for data processing and presentation, working alongside frontend developers to ensure clear and accurate data visualization.
- Maintain the calculation of vital trading metrics and develop software capable of running reliably on a 24/7 basis.
- Participate in the shared software platform development for the group and take part in the operational on-call rota.
What you need
- Minimum of 5 years of professional coding experience using Java or C++.
- Willingness to learn and use Kotlin.
- Strong algorithmic literacy with the ability to write efficient code and reduce complexity.
- Familiarity with distributed systems and the ability to reason about consistency and delays.
- Skilled in writing automated tests with a deep focus on system correctness and reliability.
- Pragmatic mindset with strong communication skills to engage effectively with technical stakeholders and users.
- Proactive attitude toward taking personal responsibility for software performance.
Nice to have
- Familiar with high throughput JVM techniques.
- Experience with binary protocols.
- Proficient in working with databases.
- Experienced in working with high stakes systems.
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.
- Various supports for caregivers, including emergency dependent care.
- 25 days paid holiday per year plus statutory holidays and paid sick days.
- Generous pension contributions.
Skills and tech stack
Questions candidates ask
What kind of team will I be working with?
You will join a small specialist team that works directly with multiple front office groups. Your colleagues and primary customers include the Trading Desk, Trading Developers, Quants, CEO, Distribution, and Risk.
What will I actually work on day-to-day?
You will build and maintain the mission control panel for a massive trading system, providing visibility and trading control mechanisms like starting strategies or emergency stopping. Your tasks include designing data ingestion mechanisms, in-memory query engines, and internal data processing frameworks.
What programming languages are required for this role?
You need a minimum of 5 years of professional coding experience in Java or C++, and you must be willing to learn Kotlin.
Where is the role located?
The role is based in London, England, United Kingdom, working out of the firm's Kings Cross office.