Senior Infrastructure Engineer - Mainframe

About the role

At USAA, our mission is to empower our members to achieve financial security through highly competitive products, exceptional service and trusted advice. We seek to be the #1 choice for the military community and their families. Embrace a fulfilling career at USAA, where our core values – honesty, integrity, loyalty and service – define how we treat each other and our members. We are proud to support active-duty military spouses. USAA roles may offer remote or hybrid flexibility for active-duty military spouses consistent with applicable policy and business needs.

The Opportunity: As a dedicated Senior Infrastructure Engineer – Mainframe, you will be responsible for creating, modifying, maintaining and supporting infrastructure and individual and integrated system components and solutions that enable IT Services. You will balance availability, security, efficiency and functional requirements to help provide an optimized production service. You will also identify and manage existing and emerging risks that stem from business activities and ensure these risks are effectively identified and escalated to be measured, monitored and controlled.

This position can be based in San Antonio, TX, or Plano, TX. Relocation assistance is not available for this position. The role requires an individual to be in the office 4 days per week.

Responsibilities

• Administer and maintain the IBM z/OS operating system and supporting software products across development, test, disaster recovery, and production environments.
• Plan, install, configure, and support z/OS upgrades, RSU maintenance, SMP/E software maintenance, and product deployments.
• Ensure system availability, resilience, performance, and capacity management of the mainframe platform.
• Perform scheduling, monitoring, and operational tooling to improve efficiency and reduce manual effort.
• Support core z/OS subsystems including JES2, USS, TSO/E, RACF, HCD/HCM, SMP/E, SDSF, and system utilities.
• Implement security controls, vulnerability remediation, audit findings, and compliance requirements.
• Perform incident troubleshooting, root cause analysis, and problem management for infrastructure-related issues.
• Maintain disaster recovery readiness and support recovery testing and business continuity initiatives.
• Develop and maintain automation using Assembler, REXX, Python, JCL, Ansible and other platform tooling.
• Partner with application, database, storage, network, security, and vendor teams to deliver infrastructure solutions.
• Create and maintain