Senior C++ Market Data Engineer

Citi's Equities Technology organization is seeking a hands-on Senior Market Data Platform Engineer to join the Market Data Engineering team, focusing on the design and delivery of Citi's next-generation real-time market data distribution platforms supporting global Equities trading, with a roadmap toward multi-asset coverage over time. The role sits within a horizontal Market Data platform organization responsible for delivering accurate, deterministic, and low-latency market data to a broad set of internal consumers, including Electronic Execution (Algo/SOR), Market Access, and analytics platforms. The senior engineer will be involved in hands-on system design and implementation, contributing to architectural decisions and ensuring adherence to latency targets while treating data correctness and determinism as non-negotiable engineering outcomes. This includes deep ownership of wire-to-consumer latency, performance measurement, regression control, and OS-level optimization required to achieve predictable behavior at scale. This role requires close collaboration with trading desks, platform consumers, quantitative research, infrastructure, and regional teams globally. Alignment with global strategy and cross-regional market coverage is a core part of the role. Prior experience with real-time market data systems and exchange microstructure across global venues is essential.