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# z/OS Mainframe Systems Programmer Lead

- **Company:** NTT Ltd.
- **Location:** London, UK (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Disaster Recovery, IBM Parallel Sysplex, Job Control Language (JCL), Mainframes, Performance Tuning, IBM Resource Access Control Facility, Broadcom, System Programming, Z/OS, Tso/ispf, Cloud Platform System, System Availability
- **Published:** August 8, 2026
- **Apply:** https://eu.experteer.com/career/view-jobs/z-os-mainframe-systems-programmer-lead-london-grossbritannien-58833301

## About the Role

FULL_TIME performance optimization, and capacity management * Lead root cause analysis and resolution of production issues * Mentor junior and senior systems programmers * Manage vendor relationships and coordinate software upgrades and evaluations * Ensure security, risk, audit, and compliance requirements are met * Support disaster recovery planning, testing, and business continuity * Review designs for scalability and operational efficiency * Provide executive-level communication during incidents * Participate in after-hours maintenance and global operations Tasks * 15+ years of hands-on IBM z/OS Systems Programming * 5+ years leading Mainframe Infrastructure or Systems Programming teams * Experience supporting large-scale enterprise or financial services environments * Extensive experience with IBM and Broadcom (CA) mainframe products * Strong expertise in Parallel Sysplex, HA, DR, and mainframe architecture * Proven leadership of technical teams and large-scale initiatives * aaaa

* knowledge of z/OS, SMP/E, TSO/ISPF, USS, SDSF, JCL, RACF * Advanced knowledge of z/OS internals, performance tuning, and problem determination * Experience with change management and production support * Strong stakeholder management and communication skills * Experience in regulated environments such as Banking or Financial Services Key requirements * competitive salary * comprehensive benefits package * remote work options * after-hours/shift support may be required * global opportunities * flexible work arrangements where possible

## Description

Experteer Overview In this role you will lead the enterprise z/OS mainframe platform, driving architecture, upgrades, and lifecycle management. You will mentor teams, steer platform modernization, and act as the highest-level escalation point for complex issues. You'll work closely with architecture, security, and operations to deliver scalable, high-availability mainframe solutions. This is a senior, strategically focused role in a regulated banking/financial services context with a strong emphasis on reliability and performance. Pay / Benefits * Lead design, implementation, and support of enterprise z/OS infrastructure environments * Provide technical leadership for z/OS upgrades and lifecycle management * Architect and manage large Parallel Sysplex environments with high availability * Oversee installation, configuration, and support of IBM and Broadcom (CA) products * Establish best practices, standards, and governance for mainframe operations * Drive platform modernization, automation, performance optimization, and capacity management * Lead root cause analysis and resolution of production issues * Mentor junior and senior systems programmers * Manage vendor relationships and coordinate software upgrades and evaluations * Ensure security, risk, audit, and compliance requirements are met * Support disaster recovery planning, testing, and business continuity * Review designs for scalability and operational efficiency * Provide executive-level communication during incidents * Participate in after-hours maintenance and global operations Tasks * 15+ years of hands-on IBM z/OS Systems Programming * 5+ years leading Mainframe Infrastructure or Systems Programming teams * Experience supporting large-scale enterprise or financial services environments * Extensive experience with IBM and Broadcom (CA) mainframe products * Strong expertise in Parallel Sysplex, HA, DR, and mainframe architecture * Proven leadership of technical teams and large-scale initiatives * Expert knowledge of z/OS, SMP/E, TSO/ISPF, USS, SDSF, JCL, RACF * Advanced knowledge of z/OS internals, performance tuning, and problem determination * Experience with change management and production support * Strong stakeholder management and communication skills * Experience in regulated environments such as Banking or Financial Services Key requirements * competitive salary * comprehensive benefits package * remote work options * after-hours/shift support may be required * global opportunities * flexible work arrangements where possible


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