[Remote] Principal Platform Engineer

Note: The job is a remote job and is open to candidates in USA. Fifth Third Bank is a leading financial institution dedicated to connecting great people to great opportunities. They are seeking a Principal Platform Engineer to evaluate, design, and implement technology solutions while serving as the application owner responsible for third-party software aligned with a line of business.

Responsibilities

• 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
• Achieve operational excellence 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

Skills

• 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 the position
• Strong expertise in z/OS internals, WLM, RMF, SMF, JES2/JES3
• 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
• Technical skills per the specific position's requirements

Benefits

• Our Total Rewards include comprehensive benefits and differentiated compensation offerings to give each employee the opportunity to be their best every day.
• In addition to the base salary, this role is eligible to participate in an incentive compensation plan, with any such payment based upon company, line of business and/or individual performance.
• Our extensive benefits programs are designed to support the individual needs of our employees and their families, encompassing physical, financial, emotional and social well-being.

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