Worked on the quantumlib/Cirq repository to enhance the IonQ client’s resilience against rate limiting by implementing automatic retries for HTTP 429 responses. Developed robust retry logic in Python, expanding the set of retriable status codes to address additional rate-limiting scenarios and reduce failed requests during periods of high traffic. Integrated this logic directly within the IonQ client, balancing low latency with improved reliability for users interacting with IonQ backends. Focused on API integration and error handling, the changes were validated through comprehensive unit and integration testing, aligning with Cirq’s goals for reliability, developer experience, and throughput in quantum computing workflows.