Senior Remote z/OS Mainframe Systems Programmer

NTT DATA, Inc.; Sheffield; Hybrid; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Benefits package

Job summary

NTT DATA is seeking an experienced z/OS Mainframe Systems Programmer to join our enterprise infrastructure team. This role focuses on installing, upgrading, and maintaining the IBM z/OS operating system and related software in a fully remote setup for the UK/Europe region.

You will lead complex system upgrades, manage parallel sysplex environments, and collaborate with cross-functional teams to ensure high availability, security, and performance in mission-critical production environments.

Qualifications

• 10+ years of hands-on experience in z/OS Systems Programming.
• Deep knowledge of z/OS, SMP/E, TSO/ISPF, USS, SDSF, JCL, RACF.
• Strong expertise in Parallel Sysplex implementation and administration.
• Experience with multiple IBM and CA/Broadcom mainframe products in large enterprises.
• Banking/financial services experience preferred.
• Excellent communication and ability to work with cross-functional teams.
• Willingness to participate in after-hours activities for upgrades and maintenance.

Responsibilities

• Install, configure, customize, upgrade, and maintain IBM z/OS operating systems.
• Manage and support IBM and CA/Broadcom system software products across enterprise environments.
• Plan and execute operating system upgrades and software maintenance activities using SMP/E.
• Administer and support large-scale Parallel Sysplex environments to ensure high availability and performance.
• Perform system performance monitoring, capacity planning, and resource optimization.
• Analyse and resolve complex system-level issues involving z/OS, middleware, and infrastructure components.
• Work closely with application support, infrastructure, security, and operations teams to ensure platform stability.
• Implement software maintenance, fixes, service packs, and vendor-recommended updates.
• Support disaster recovery, business continuity, and high-availability initiatives.
• Maintain system security controls and ensure compliance with organizational standards.
• Create and maintain technical documentation, procedures, and operational runbooks.
• Participate in root cause analysis and problem management activities.
• Provide technical guidance and mentoring to junior team members.
• Support production implementations and planned maintenance activities, including off-hours and weekend work when required.

Skills

z/OS

SMP/E

TSO/ISPF

USS (UNIX System Services)

SDSF

JCL

RACF

Parallel Sysplex

Job description

NTT DATA is seeking an experienced z/OS Mainframe Systems Programmer to join our enterprise infrastructure team. This role focuses on installing, upgrading, and maintaining the IBM z/OS operating system and related software in a fully remote setup for the UK/Europe region.

You will lead complex system upgrades, manage parallel sysplex environments, and collaborate with cross-functional teams to ensure high availability, security, and performance in mission-critical production environments.