algorithmic trading , Java, Distributed Computing, Multithreading, Concurrency, Memory Management, Fix Protocol, Electronic Trading workflows, Linux environments, Market data processing, Distributed systems architecture, Ultra-low latency system design, Execution management systems, Event-driven systems, Order lifecycle management, Microservices architecture, High-throughput messaging architectures, Capacity Planning, Network Optimization, Performance profiling and tuning, market structure, Lock-free architectures