Core System Administrator

Core System Administrator City Bank United States, Texas, Lubbock Mar 18, 2026 Description We are seeking a technically skilled and detail-oriented Core Systems Administrator to manage and support our Jack Henry SilverLake core banking platform, with a strong emphasis on IBM iSeries systems integration and support. This role ensures the efficient, secure, and compliant operation of all systems and applications used across the organization. Essential Duties 1. Monitor, maintain, and troubleshoot the Jack Henry Silverlake core banking system. 2. Administer IBM i / AS400 environments, including user access, job scheduling, backups, and performance tuning. 3. Perform system upgrades, patches, and configuration changes in accordance with IT policies and regulatory requirements. 4. Ensure high availability and disaster recovery readiness of core systems. 5. Collaborate with IT, operations, and vendors to support integrations and resolve technical issues. 6. Document system configurations, procedures, and troubleshooting guides. 7. Identify opportunities to automate routine tasks and improve system efficiency. 8. Provide technical guidance and support to users and junior staff. 9. Maintains up-to-date knowledge of current and emerging technologies relevant to core systems infrastructure, ensuring effective implementation, integration, and support within the organization. 10. Performs other related duties. Equal Opportunity Employer/Veterans/Disabled