Senior Mainframe z/OS SRE — Security & Performance

MetLife

Clarks Summit (Lackawanna County)

Hybrid

USD 111,000 - 180,000

Full time

14 days+

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Job summary

MetLife's Global Technology team is seeking a seasoned mainframe architect to lead modernization of legacy z/OS environments and drive resilience, automation, and scalable solutions across the enterprise.

You will collaborate with IT and business stakeholders to design, implement, and optimize mainframe platforms, ensuring high availability, security, and performance while aligning with business goals. Hybrid work with in-office as needed.

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.
Experience with cloud integration, DevOps, zLinux, OpenShift and automation in mainframe environments.
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.

Responsibilities

Lead architecture, design, and implementation of mainframe solutions aligning with business goals.
Provide technical leadership to mainframe development, operations, and modernization teams.
Collaborate with stakeholders to identify requirements and deliver cost-effective mainframe solutions.
Establish mainframe intake and change processes and tune z/OS, zLinux, WLM, and PR/SM.
Assist in BCP design exercises using Ansible and CSM, metro mirror, and site swaps.
Evaluate emerging technologies to modernize mainframe platforms.
Develop architectural documentation, roadmaps, and blueprints for mainframe systems.
Ensure high availability, security, and performance with SMF & RMF telemetry.
Participate in ITSM processes like Release/Change and Incident/Problem resolution.
Resolve z/OS performance-related incidents during troubleshooting.
Partner with enterprise architects to define enterprise-wide strategies.