Quant Developer – Risk (London or NYC)

About the role

We are looking for an experienced Quant Developer to join our risk team on a global prime brokerage and financing platform. The position can be based in London or New York and will focus on productionising risk models, enhancing research tools and building APIs for internal and external clients.

Key responsibilities

• Ensure risk models are production‑ready by contributing to all stages of development, testing, deployment and ongoing maintenance.
• Improve research tools and quantitative models, including designing and implementing back‑testing frameworks and performance analytics.
• Develop robust APIs that deliver customised analytics to internal teams and external clients, supporting high‑throughput and low‑latency requirements.
• Maintain, enhance and extend the scenario engine and risk engine codebase, incorporating new risk factors and improving computational efficiency.

Required profile

• Minimum 5 + years of quantitative software development experience, preferably at a top‑tier financial services firm, with a track record of delivering production systems.
• Bachelor’s degree or higher in Computer Science, Mathematics, Engineering or a related quantitative discipline.
• Hands‑on experience with any part of a model‑building pipeline (risk, alpha, factor construction, validation, etc.) in a real‑world setting.
• Proven ability to design, build and operate large‑scale, distributed systems that handle high data volumes and low‑latency processing.

Required skills

• Python (production‑grade)
• Distributed systems development
• API development