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About the Role

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 ideal 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.

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.

Requirements

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.

Skills

z/OS
SMP/E
TSO/ISPF
USS (UNIX System Services)
SDSF
JCL
RACF
Parallel Sysplex
Installation, customization, and support of IBM and CA/Broadcom products
ACF2
GDPS
RACF Administration
Assembler
REXX
OMEGAMON
RMF
SMF
SAS

Location

UK/Europe: Fully remote possible
Sheffield preferred

Work Type

Fully remote possible
Onsite (Sheffield preferred)

Experience Level

10+ years of hands-on experience in z/OS Systems Programming

Salary/Compensations

Competitive salary

Benefits

Comprehensive, locally competitive benefits package

About the Company

NTT DATA is a $30 billion business and technology services leader, serving 75% of the Fortune Global 100.
We are committed to accelerating client success and positively impacting society through responsible innovation.
We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services.
Our consulting and Industry solutions help organizations and society move confidently and sustainably into the digital future.
As a Global Top Employer, we have experts in more than 50 countries.
We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners.
NTT DATA is a part of NTT Group, which invests over $3 billion each year in R&D.
Whenever possible, we hire locally to NTT DATA offices or client sites.
This ensures we can provide timely and effective support tailored to each client’s needs.
While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements.
For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs.
At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees.
NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com, @nttdatafed.com and @talent.nttdataservices.com email addresses.
If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us.
NTT DATA endeavors to make https://us.nttdata.com accessible to any and all users.
If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at https://us.nttdata.com/en/contact-us.
This contact information is for accommodation requests only and cannot be used to inquire about the status of applications.

Equal Opportunity

NTT DATA is an equal opportunity employer.
Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status.
For our EEO Policy Statement, please click here.
If you'd like more information on your EEO rights under the law, please click here.
For Pay Transparency information, please click here.