Developed and delivered an end-to-end Z/OS Certificate Lifecycle Automation feature for the IBM/z_ansible_collections_samples repository, focusing on automating the creation, renewal, and deletion of z/OS certificates. Leveraging Ansible and YAML, the solution introduced a comprehensive set of playbooks and configurations that integrated with IBM Concert and ServiceNow, enabling automated provisioning, monitoring, and governance of certificate events. This work standardized certificate management workflows across z/OS environments, reducing manual effort and aligning security with operational processes. The implementation demonstrated expertise in automation, DevOps, and z/OS management, and was merged as part of the 13.02.26 release to production.