About this role
Salary: £55,000 - 95,000 per year
Requirements: Multiple years of z/OS systems programming experienceVery strong Parallel Sysplex skillsStrong experience with z/OS, TSO/ISPF, USS, SDSF, JCL, and RACFExperience installing several IBM and CA productsDeep mastery of z/OS architecture, including IPL procedures, JES2/JES3 configurations, Sysplex management, SMF data collection, and parmlib customizationProficiency in writing and debugging system-level routines and automation in Assembler, REXX, and JCLExperience managing hardware and logical resources across LPARsAnalytical troubleshooting skills for abends, storage hangs, and performance anomaliesPerformance monitoring knowledgeNetworking knowledgeExperience planning and leading hardware refreshes, feature activations, and migrations with minimal downtimeIdeally worked in a bank or an organisation with large installationsConfidence to work independently and start contributing from day oneExcellent problem-solving skills and the ability to be a true team playerWillingness to provide off-hours support when required Responsibilities: Upgrade, maintain, and support the z/OS operating systemUpgrade, maintain, and support ISV products, particularly from IBM and Computer Associates (CA)Work closely with other engineering teams to ensure systems are stable, available, up to date, and running efficientlyManage DASD and tape allocation across LPARs using HCD/HCMConfigure LPARs in HMCPerform security administration using RACF or equivalentEnsure data integrity and swift recovery using DFSMShsm policies and recall management, FDR/ABR backups, and FlashCopy or virtual tape replicationOptimize system throughput and response times using RMF and SMF report analysis, OMEGAMON or BMC MainView dashboards, and WLM classification and tuningConfigure and support mainframe connectivity including VTAM and SNA definitions, TCP/IP stack on z/OS, and OSA adapter and Coupling Facility communicationExecute OS and product upgrades using SMP/E and z/OSMF workflowsUse Broadcom, IBM, and BMC tooling for fix management and compliance reportingPlan and lead hardware refreshes, feature activations, and migrations with minimal downtime, including IPL scheduling, vendor coordination, and change-control governanceProduce clear system diagrams, runbooks, and upgrade plansCollaborate with application teams, storage, networking, and security groupsStay current on IBM Redbooks, z/OS release notes, firmware updates, and vendor training or industry conferences Technologies: AICloudFirmwareHardwareIBMSupportSecuritySwiftTCP/IP More:
We are NTT DATA, 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 worlds leading AI and digital infrastructure providers, with 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. We have experts in more than 50 countries and offer clients access to a robust ecosystem of innovation centers and established and start-up partners. This is a full-time hybrid role based remotely and on client site in Sheffield, with a comprehensive, locally competitive benefits package. We prioritize our peoples health and wellbeing, and we hire locally where possible to support timely and effective client service.
last updated 36 week of 2026