Principal Platform Engineer

Principal Platform Engineer

Evaluate, design and implement technology solutions to build and progress technology strategies with a line of business. The incumbent will be the application owner responsible for third‑party, purchased software aligned with a line of business and will work with the vendor to understand upcoming changes, determine how the software fits into the technology roadmap, and design plans to ensure business continuity and effectiveness.

Understanding the bank’s systems, its configuration and required reconfiguration is essential. If aligned to an agile squad, work closely with the product owner to ensure user stories are defined appropriately and to develop effective technology solutions.

• Monitor, analyze, and tune mainframe system performance (CPU, memory, I/O, workloads).
• Identify performance bottlenecks and implement corrective actions.
• Analyze SMF/RMF data to provide actionable insights and recommendations.
• Optimize WLM policies and service class definitions to align with business priorities.
• Develop and maintain capacity models to predict future demand and growth.
• Perform trend analysis and forecasting for CPU, DASD, and throughput requirements.
• Collaborate with engineering and business teams to align capacity plans with strategic initiatives.
• Support hardware upgrades, LPAR sizing, and infrastructure scaling decisions.
• Perform z/OS system programming tasks including installation, configuration, and maintenance.
• Tune system parameters (PARMLIB, JES2, WLM, SRM) for performance optimization.
• Support and enhance system automation and health monitoring.
• Maintain system software including SMP/E maintenance, patching, and upgrades.
• Troubleshoot system‑level issues impacting performance and availability.
• Utilize performance tools such as RMF, SMF, OMEGAMON, or equivalent.
• Generate reports and dashboards to communicate performance metrics to stakeholders.
• Develop scripts or automation (REXX, Python, or similar) to improve efficiency.
• Follow industry and organizational best practices and standards, and participate in company communities of practice to continuously refine and communicate them.
• Contribute to a culture of continuous improvement by automating processes and creating maintainable, supportable, and testable solutions.
• Keep up with technology trends and innovations in your field(s) of practice.
• Provide operational support and troubleshooting for your team’s products and services.
• Provide coaching, mentoring, and training for new or less experienced team members.

• Bachelor’s degree in a relevant technology field or equivalent combination of education and work experience.
• 8+ years of engineering or other IT work experience relevant to this position.
• Strong expertise in z/OS internals, WLM, RMF, SMF, JES2/JES
  3.
• Hands‑on experience with capacity planning and performance analysis.
• Proficiency in system‑level diagnostics and problem determination.
• Experience with SMP/E, PARMLIB configuration, and system upgrades.
• Strong problem‑solving and communication skills.
• Willingness to work in a highly collaborative environment.
• Solid understanding and significant experience with modern software development practices, tools, and/or hardware technologies.
• Solid understanding of IT security best practices.
• Expertise in one or more technical and/or functional domains relevant to the position.
• Experience designing, implementing, and supporting complex technical solutions.
• Position not available for immigration sponsorship.

Total Base Pay Range: $96,500.00 – $ USD annually. The position is eligible to participate in an incentive compensation plan based on company, line of business and/or individual performance. Comprehensive benefits programs support employees and families, including physical, financial, emotional and social well‑being.

Virtual (Kentucky).

Fifth Third Bank, National Association is proud to have an engaged and inclusive culture and to promote and ensure equal employment opportunity in all employment decisions regardless of race, color, gender, national origin, religion, age, disability, sexual orientation, gender identity, military status, veteran status or any other legally protected status.