Joining a dynamic core engineering team, the midlevel or senior Software Engineer (C++/C#) will work remotely to implement and maintain a robust C# client library while developing high-performance server applications in C++ and optimizing the codebase for speed and efficiency. Key responsibilities Own and maintain the C# client library, ensuring robustness and ease of integration for external users Design, develop, and maintain high-performance server applications in C++ while optimizing the existing codebase for high throughput and low latency Collaborate with the systems team to implement best practices for build, deployment, and monitoring Required qualifications 5+ years of full-time software engineering experience, preferably in a trading firm or high-growth startup Strong proficiency in both C++ and C# Experience designing APIs with a focus on developer-friendly interfaces Knowledge of systems programming, algorithms, data structures, and multithreading Interest in low-level optimization and performance engineering, particularly in financial data or algorithmic trading