A top-performing quantitative hedge fund is seeking an exceptional C++ Engineer to join their Feed Handler team, a critical part of the firm’s high-frequency trading platform. This is a strategic hire into one of the most performance-sensitive teams in the organisation, responsible for developing low-latency systems that process and enrich global market data in real time. The code built here directly powers £1bn of trading activity and is used by Portfolio Managers, Traders, and Quants across the firm. The role offers a rare opportunity to build greenfield systems from the ground up, with direct input from the business, full visibility of your impact, and ownership from design through to production. Key Responsibilities: Design and implement high-performance, enterprise-grade C++ systems for ingesting and distributing market data. Contribute to system architecture decisions, performance tuning, and strategic platform development. Own solutions end-to-end, including testing, deployment, and operational support. Requirements: Proven strength in modern C++ (20/23), with a deep understanding of algorithms, concurrency, and systems programming. Experience building low-latency or high-throughput systems (financial experience essential). Strong problem-solving skills, attention to detail, and a passion for performance optimisation. Why Apply? Work in a high-impact seat building mission-critical infrastructure. Cutting-edge tech and a firm-wide commitment to engineering excellence. Join a firm that attracts the brightest minds in tech and quantitative finance.