Uber's Marketplace organization is seeking a Senior Software Engineer for their Session Value team, a new effort focused on creating a central mechanism to score decisions incorporating both short-term and long-term effects on riders and earners. This role involves building scalable real-time systems to evaluate hundreds of thousands of decisions per second, informing all optimization systems across Marketplace. The ideal candidate will have experience in distributed systems, proficiency in Java, Go, and Python, and the ability to work with cross-functional partners. Key responsibilities include building scalable real-time systems, developing tools for offline evaluation and simulation, supporting experimentation and integration, defining monitoring standards, and mentoring junior engineers. The team comprises experienced engineers and scientists with diverse backgrounds in Economics, ML, and Operations Research, focused on understanding complex marketplace dynamics and user behavior. This high-priority effort aims to improve marketplace efficiency while balancing the needs of riders and earners on the platform.