AI/ML Engineer Needed to Fix Existing System Issue

Looking for a experienced AI/ML Engineer to help troubleshoot and resolve an issue in an existing AI-powered application. The system is already developed and deployed, but we are experiencing a problem that requires someone with strong debugging and problem-solving skills. This is focused task intended for an engineer who can quickly understand an existing codebase, identify the root cause, and implement a reliable fix. This application is Python-based backend and ML/AI processing workflows. This application integrates with OpenAI APIs to generate responses for users. Recently, API requests have started failing intermittently, resulting in errors and incomplete responses. I need an experienced AI/Python engineer to identify the root cause, implement a fix, and verify stable operation.