During March 2024, Ben Coll contributed to the cloudflare/workerd repository by enhancing the reliability of the alarm scheduling subsystem. He developed the deleteAllAlarms() function in C++ and integrated it into abortAllDurableObjects(), ensuring that all scheduled alarms are cleared when aborting durable objects. This approach addressed the issue of stale alarms and improved deterministic cleanup within the backend system. His work focused on backend development and testing, with clear traceability to the codebase. The feature was treated as a core reliability improvement, demonstrating thoughtful engineering depth in both the technical implementation and its impact on system stability.