z/OS Mainframe Systems Programmer in Sheffield

Competitive salary | UK: Hybrid: remote + Sheffield

At NTT DATA, we know that with the right people on board, anything is possible. The quality, integrity, and commitment of our employees are key factors in our company\’s growth, market presence and our ability to help our clients stay a step ahead of the competition. By hiring the best people and helping them grow both professionally and personally, we ensure a bright future for NTT DATA and for the people who work here.

NTT DATA is currently looking for a z/OS Mainframe Systems Programmer (hybrid: remote + Sheffield) for our growing team in the UK.

OverviewNTT DATA are seeking an experienced z/OS Mainframe Systems Programmer to work on major projects, in one of the largest z/OS Mainframe environments globally. The role involves upgrading and supporting the z/OS operating system and ISV products, mainly from IBM and Computer Associates (CA).

Responsibilities

Upgrading, maintaining and supporting the z/OS operating system

Upgrading, maintaining and supporting ISV products particularly from vendors: IBM and Computer Associates (CA)

Working closely with the other Engineering teams to ensure the systems that are built are stable, available, up to date and running as effectively and efficiently as possible

Managing hardware and logical resources across LPARs

DASD and tape allocation via HCD/HCM

LPAR configuration in HMC

Security administration using RACF or equivalent

Ensuring data integrity and swift recovery with

DFSMShsm policies and recall management

FDR/ABR for high-speed backups

FlashCopy or virtual tape replication for near-instant restores

Optimizing system throughput and response times utilizing

RMF and SMF report analysis

OMEGAMON or BMC MainView dashboards

WLM classification and tuning

Configuring and supporting mainframe connectivity

VTAM and SNA definitions

TCP/IP stack on z/OS

OSA adapter and Coupling Facility communication

Executing OS and product upgrades with industry-standard utilities

SMP/E for PTF, APAR, and deliverable management

z/OSMF workflows for streamlined maintenance

Broadcom (e.g., Topaz), IBM, and BMC tooling for fix management and compliance reporting

Skills

Multiple years of z/OS systems programming experience

Should have very strong Parallel Sysplex skills

z/OS, TSO/ISPF, USS, SDSF, JCL, RACF

Installation of several different IBM and CA products

Extensive experience of installing many IBM and CA products

Deep mastery of z/OS architecture, including IPL procedures, JES2/JES3 configurations, Sysplex management, SMF data collection, and parmlib customization.

Proficient in writing and debugging system-level routines and automation

Assembler for exits and control blocks

REXX for scripting and batch utilities

JCL for job submission, parameterization, and workflow control

Managing hardware and logical resources across LPARs

DASD and tape allocation via HCD/HCM

LPAR configuration in HMC

Security administration using RACF or equivalent

Analytical troubleshooting of abends, storage hangs, and performance anomalies using

Dump analysis with IPCS

SLIP and trace tools

System logs and console messages

Ensuring data integrity and swift recovery with

DFSMShsm policies and recall management

FDR/ABR for high-speed backupsFlashCopy or virtual tape replication for near-instant restores

Performance Monitoring

Networking Knowledge

Executing OS and product upgrades with industry-standard utilities

SMP/E for PTF, APAR, and deliverable management

z/OSMF workflows for streamlined maintenance

Broadcom (e.g., Topaz), IBM, and BMC tooling for fix management and compliance reporting

Project Management & Hardware Refresh

Planning and leading hardware refreshes, feature activations, and migrations with minimal downtime, including IPL scheduling, vendor coordination, and change-control governance.

Producing clear system diagrams, runbooks, and upgrade plans, while collaborating with application teams, storage, networking, and security groups.

Documentation and Communication

Should have ideally worked in a Bank or organisations with large installations

Should be confident, able to work independently and start contributing from day one

Must have excellent problem-solving skills and be a true team player

Will need to provide off hours support for the implementation of software changes, when required

Staying current on IBM Redbooks, z/OS release notes, firmware updates, and attending vendor training (IBM, Broadcom, BMC) or industry conferences.

Work setupHybrid working: remote + on client site (Sheffield)

You will enjoy a comprehensive, locally competitive benefits package.

About NTT DATANTT 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 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/en/contact-us 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. 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.

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