In April 2025, Kevin Tang developed pickleable serialization support for the Qiskit/qiskit repository, focusing on the PrimitiveJob and DataBin classes. He implemented Python’s __getstate__ and __setstate__ methods to enable reliable state persistence, which is essential for distributed and long-running workloads. By ensuring these objects are fully pickleable, Kevin addressed challenges in retry logic and cross-process communication, reducing operational friction. He complemented the feature with comprehensive tests covering serialization paths and edge cases, and updated release notes for user clarity. His work demonstrated depth in object-oriented programming, Python serialization, and testing, resulting in improved code maintainability and robustness.