During April 2025, Jianing Zhang focused on backend stability for the pfperl-api component in the inverse-inc/packetfence repository. Zhang addressed a critical issue where the pfperl-api manager could exit unexpectedly if a worker process terminated, improving the system’s resilience and reducing the risk of unplanned downtime. By ensuring proper initialization of application and logging modules before operation, Zhang enhanced both reliability and observability, supporting easier troubleshooting and higher uptime. The work leveraged Perl and system administration skills to strengthen startup routines and runtime behavior, contributing to the maintainability and automation goals of the production API service. Depth of work was targeted and robust.