Manages enterprise Unix, Linux, cloud, storage, and IBM Power infrastructure across production, test, and development environments. Responsibilities include system installation, configuration, upgrades, patching, tuning, monitoring, troubleshooting, automation, capacity planning, disaster recovery, high availability, and Level 2/3 support. The role leads infrastructure initiatives, develops operational standards and documentation, supports cloud and container platforms, ensures service availability and business continuity, and provides technical guidance, project leadership, and mentorship.