You optimize Big Motors's backend system for better performance. Simulation Details: Big Motors is a global leader in the automotive industry, producing millions of vehicles annually and operating in over 100 countries. Renowned for its innovation in electric vehicle (EV) technology, Big Motors is committed to sustainability and advanced engineering, aiming for zero crashes, zero emissions, and zero congestion. Central to this mission is the Vehicle Timing Service—a Java Spring Boot backend system that synchronizes engineering timelines across more than 50 vehicle programs. This service integrates with cloud platforms and enterprise tools, ensuring precise coordination of supply chain schedules, manufacturing deliverables, and engineering milestones. As Big Motors' operations and data volumes grow, the Vehicle Timing Service faces ongoing challenges to maintain high performance and reliability, which are critical to the company’s reputation and success. You step into the role of a Senior Full Stack Engineer at Big Motors, tasked with resolving a critical performance issue in the Vehicle Timing Service. Your main point of contact is Alex Rivera, the Technical Lead, who provides architectural context and reviews your technical decisions. Through real-time chat, you will diagnose the root cause of the system’s slowdown, refactor the data-access logic to optimize database queries, and ensure the solution is scalable. In addition to the technical fix, you will embed clear, actionable documentation directly into the codebase—explaining your optimization rationale, offering mentoring guidance for junior developers, and outlining integration steps and preventive coding standards. Throughout the process, you will communicate your reasoning and progress to Alex, iterating on your solution and documentation based on his feedback. - Collaborate with Alex Rivera via chat to diagnose and resolve the backend performance issue. - Edit the collaborative code file to implement an optimized solution and embed comprehensive documentation. - Demonstrate technical expertise in backend optimization and clear communication of your decisions. - Ensure your documentation is actionable, clear, and meets Big Motors’s engineering standards as confirmed by Alex.