Senior z/OS Mainframe Systems Programmer

NTT DATA, Inc.; Barcelona; On-site; EUR 85,000 - 115,000; Full time

Job summary

NTT DATA in Barcelona is seeking an experienced z/OS Mainframe Systems Programmer to join our enterprise infrastructure team. This role is responsible for the installation, upgrade, maintenance, and support of the IBM z/OS operating system and a broad range of ISV products.

The ideal candidate will have deep z/OS programming expertise, strong Parallel Sysplex skills, and extensive experience in mission-critical environments such as banking or financial services.

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 support.
• Extensive experience installing, configuring, customizing, supporting and maintaining multiple IBM and CA/Broadcom mainframe products.
• Experience working in large enterprise environments, preferably within Banking or Financial Services.
• Strong troubleshooting and problem-solving capabilities.
• Excellent verbal and written communication skills.
• Experience supporting mission-critical production environments with stringent SLA requirements.

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

SDSF

JCL

RACF

Parallel Sysplex

IBM/CA-Broadcom products

Tools

ACF2

GDPS

REXX

OMEGAMON

RMF

SMF

SAS

Job description

NTT DATA in Barcelona is seeking an experienced z/OS Mainframe Systems Programmer to join our enterprise infrastructure team. This role is responsible for the installation, upgrade, maintenance, and support of the IBM z/OS operating system and a broad range of ISV products.

The ideal candidate will have deep z/OS programming expertise, strong Parallel Sysplex skills, and extensive experience in mission-critical environments such as banking or financial services.