Quant Developer

Quant Developer - Delta One Trading Technology (C++ / C# / Python)
Location: London (On-Site)
Language Preference: French-speaking candidates preferred
Experience Requirement: We are seeking candidates with 7+ years' experience in financial technology or trading systems development.

Contract Length: 6-month rolling contract
Start Date: ASAP

We are supporting a leading financial institution in their search for two experienced Quant Developers to join a high-performing Delta One trading technology team. This is a hands-on technical role focused on building and optimising systems that power ETF market-making and real-time trading operations.

You will be part of a cross-functional team responsible for:

• Booking systems and real-time price computation
• Market data storage and high-speed data transfer
• Algorithm design and refinement
• Hardware selection and network performance analysis

Your work will directly support trading activities, with a strong emphasis on reliability, scalability, and performance.

• Develop and maintain scalable systems for large-scale data analysis and experimentation
• Strengthen the reliability of trading infrastructure supporting ETF market-making
• Integrate and evaluate third-party tools and market data sources
• Ensure accurate computation of risk and P&L
• Collaborate with traders and quantitative researchers to improve pricing models and methodologies
  
  

• Languages & Frameworks: C++, C#, Python (Django), Bash
• Environment: Linux, Web Services
• Tools: Real-time data processing, distributed systems, performance monitoring
  
  

• Delta One trading strategies
• ETF market structure and dynamics
  
  

• Minimum 7 years' experience in financial services or trading technology
• Proficient in C++ and/or C# (core requirement)
• Experience with Python (particularly Django) and Bash scripting
• Comfortable working in Linux environments
• Strong communicator with the ability to work closely with trading teams
• French-speaking candidates are preferred due to team composition

Feel free to send over an up-to-date CV or reach out directly at if you'd like to learn more.