Lead Mainframe zOS Security & Performance SRE

Description and Requirements
The Team You Will Join
When you join MetLife's Global Technology team, you'll be part of a forward-thinking group dedicated to shaping the future of digital solutions for customers worldwide. You'll develop, maintain and support technology applications and delivery, leveraging AI, automation, and contemporary ways of working to enhance experiences and drive business outcomes. Your work will simplify complex processes, improve tech resiliency, and ensure high-performing, seamless solutions that power life's most important moments. In this dynamic environment, you'll collaborate with talented peers across teams and functions, expanding your skills in impactful ways. Ready to push boundaries and set new industry standards? Join us and help drive the future of technology forward.
The Opportunity
In this leadership position, you will be responsible for architecting, designing, and directing the modernization and optimization of MetLife's mainframe systems to ensure they are reliable, scalable, and fully aligned with our evolving business goals. Design and assist in the automation of Mainframe resilience and BCP. The ideal candidate will bring extensive expertise in mainframe technologies, a strategic vision for IT transformation, and a proven history of successfully leading complex, enterprise-wide mainframe modernization projects.
Key Responsibilities

• Assist in leading the architecture, design, and implementation of mainframe solutions that support MetLife's business goals and technology strategy.
• Provide technical leadership and guidance to mainframe development, operations, and modernization teams.
• Collaborate with business stakeholders, application developers, and infrastructure teams to identify requirements and deliver innovative, cost-effective mainframe solutions.
• Help establish a new Mainframe in-take and change processes that consider new workloads and provide required mainframe performance tuning of z/OS, zLinux, WLM & PR/SM.
• Assist in BCP design exercises using Ansible & CSM, metro mirror, global mirror safeguarded copies intra data center hyper swaps and fail & stay data center site swaps.
• Evaluate emerging technologies, tools, and methodologies to drive continuous improvement and modernization of mainframe platforms.
• Establish and enforce best practices, standards, and architectural governance for mainframe environments.
• Develop and maintain architectural documentation, roadmaps, and blueprints for mainframe systems.
• Ensure high availability, security, and performance of mainframe applications and infrastructure by constantly reviewing relevant SMF & RMF performance telemetry data and appropriate application traces with application stakeholders.
• Stay current with emerging AI technologies and assess their applicability to modernizing mainframe platforms and processes.
• Participate in ITSM processes such as Release/Change approvals, Incident/Problem resolution.
• Proven experience resolving z/OS performance related incidents during troubleshooting
• Partner with enterprise architects and other technology leaders to define and implement enterprise-wide technology strategies.

Required Qualifications

• Bachelor's Degree in Computer Science, or related field experience.
• 7+ years of experience in mainframe engineering, with strong experience in service delivery, engineering or architecture.
• Expertise in IBM z/OS, WLM, RACF and related mainframe technologies.
• Demonstrated experience with mainframe modernization, integration, and migration projects.
• Proven ability to lead cross-functional teams and manage multiple complex projects simultaneously.
• Excellent communication, interpersonal, and stakeholder management skills.
• Analytical, strategic thinker with strong problem-solving abilities.

Preferred Qualifications

• Experience with cloud integration, DevOps, zLinux, OpenShift and automation in mainframe environments. (RedHat Ansible for IBM Z Collections, Ansible, Python)
• Knowledge of hybrid IT architectures and emerging technology trends.
• Relevant certifications (e.g., IBM Certified System Architect, TOGAF).
• Experience in the insurance or financial services industry.

The expected salary range for this position is $ 111,000 - $180,000 . This role may also be eligible for annual short-term incentive compensation and stock-based long-term incentives. All incentives and benefits are subject to the applicable plan terms.
Benefits We Offer
Our U.S. benefits address holistic well-being with programs for physical and mental health, financial wellness, and support for families. We offer a comprehensive health plan that includes medical/prescription drug and vision, dental insurance, and no-cost short- and long-term disability. We also provide company-paid life insurance and legal services, a retirement pension funded entirely by MetLife and 401(k) with employer matching, group discounts on voluntary insurance products including auto and home, pet, critical illness, hospital indemnity, and accident insurance, as well as Employee Assistance Program (EAP) and digital mental health programs, parental leave, paid time off, paid holidays, volunteer time off, tuition assistance and much more! For more information regarding MetLife's U.S. benefits, please click here .
About MetLife
Recognized on Fortune magazine's list of the "World's Most Admired Companies", Fortune World's 25 Best Workplaces™, as well as the Fortune 100 Best Companies to Work For®, MetLife, through its subsidiaries and affiliates, is one of the world's leading financial services companies; providing insurance, annuities, employee benefits and asset management to individual and institutional customers. With operations in more than 40 markets, we hold leading positions in the United States, Latin America, Asia, Europe, and the Middle East.
As part of our New Frontier strategy, MetLife is building an AI-enabled, people-centered future. We're looking for people who bring curiosity, adaptability, and a growth mindset as we use AI to enhance how we serve customers, support communities, and evolve the way work gets done. At MetLife, AI is a responsible partner that supports human judgment, creativity, and continuous improvement while helping us build trust, inclusion, and long-term value.
Our purpose is simple - to help our colleagues, customers, communities, and the world at large create a more confident future. United by purpose and guided by our core values - Win Together, Do the Right Thing, Deliver Impact Over Activity, and Think Ahead - we're inspired to transform the next century in financial services. At MetLife, it's #AllTogetherPossible . Join us!
MetLife is an Equal Opportunity Employer. All employment decisions are made without regards to race, color, national origin, religion, creed, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity or expression, age, disability, marital or domestic/civil partnership status, genetic information, citizenship status (although applicants and employees must be legally authorized to work in the United States), uniformed service member or veteran status, or any other characteristic protected by applicable federal, state, or local law ("protected characteristics").
If you need an accommodation due to a disability, please email us at [email protected]. This information will be held in confidence and used only to determine an appropriate accommodation for the application process.
MetLife maintains a drug-free workplace.
It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liabilities.
This posting is for a current vacancy and is anticipated to remain open for at least 90 days from the listed posting date.