During October 2025, Cobley focused on backend stability and performance for the google/orbax repository, addressing a bug in JAX backend initialization. By carefully reordering condition checks in the Python codebase, Cobley prevented unnecessary backend initialization when single-host load and broadcast operations were used. This targeted change reduced side effects and improved startup performance in single-host environments, resulting in faster and more reliable deployments. The work demonstrated a strong understanding of backend development and JAX, with the solution implemented as a low-risk, well-documented commit. Cobley’s contribution enhanced initialization logic while maintaining clear traceability and minimal disruption to existing workflows.