NTT 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).,

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, 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 backups
FlashCopy 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.

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

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.

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