• Design and implement high-performance trading infrastructure, including order management systems, execution gateways, and market data distribution. • Optimize low-latency systems for throughput, determinism, and fault tolerance. • Integrate with global exchanges, brokers, and ECNs, ensuring robust FIX/FAST/OUCH/ITCH connectivity. • Build real-time risk checks and margin controls aligned with compliance requirements. • Develop and maintain core libraries, APIs, and frameworks used across trading desks. • Collaborate with quants and traders to prototype and productionize new strategies. • Monitor, debug, and optimize production systems to ensure high availability and rapid recovery. • Mentor junior engineers and set engineering standards for code quality, testing, and deployment.