Make an impact with NTT DATA

Join a company that is pushing the boundaries of what is possible. We are renowned for our technical excellence and leading innovations, and for making a difference to our clients and society. Our workplace embraces diversity and inclusion – it’s a place where you can grow, belong and thrive.

Make an impact with NTT DATA

Join a company that is pushing the boundaries of what is possible. We are renowned for our technical excellence and leading innovations, and for making a difference to our clients and society. Our workplace embraces diversity and inclusion – it’s a place where you can grow, belong and thrive.

Your day at NTT DATA

We are 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, primarily from IBM and Computer Associates (CA/Broadcom).

The idóneo candidate will possess deep technical expertise in z/OS Systems Programming, strong Parallel Sysplex administration skills, and extensive experience working within large-scale, mission-critical environments such as banking and financial services organizations. The successful candidate will be a self-starter who can work independently, troubleshoot complex technical issues, and contribute effectively from day one.

This position requires excellent communication skills, strong analytical thinking, collaboration with cross-functional teams, and participation in planned after-hours activities related to system upgrades, maintenance, and implementations.

In this role, You will

- 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.

Required Qualifications

- 10+ years of hands‑on experience in z/OS Systems Programming.
- Deep knowledge of:
- z/OS Operating System
- SMP/E
- TSO/ISPF
- UNIX System Services (USS)
- SDSF
- JCL
- RACF

- Strong expertise in Parallel Sysplex implementation and support as well as Parallel Sysplex architecture and administration
- 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.
- Ability to independently manage complex technical assignments.
- Excellent verbal and written communication skills.
- Experience supporting mission-critical production environments with stringent SLA requirements.

Desired Qualifications

- Experience with ACF2 Security Administration.
- Knowledge of GDPS (Geographically Dispersed Parallel Sysplex) environments.
- Working knowledge of:
- Assembler
- REXX
- OMEGAMON
- RMF
- SMF
- SAS

- Experience with automation and operational tooling in mainframe environments.
- Understanding of disaster recovery and high‑availability architectures.
- Exposure to hybrid infrastructure environments and modernization initiatives.
- Industry certifications related to IBM Z Platforms or Mainframe Systems Programming are desirable.

Job Expectations

- Deliver stable, secure, and highly available mainframe infrastructure services.
- Participate in change management, release

📌 z/OS Mainframe Systems Programmer (Barcelona)
🏢 NTT DATA
📍 Barcelona