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).
Key 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:
o DASD and tape allocation via HCD/HCM
o LPAR configuration in HMC
o Security administration using RACF or equivalent
* Ensuring data integrity and swift recovery:
o DFSMShsm policies and recall management
o FDR/ABR for high‑speed backups
o FlashCopy or virtual‑tape replication for near‑instant restores
* Optimizing system throughput and response times utilizing:
o RMF and SMF report analysis
o OMEGAMON or BMC MainView dashboards
o WLM classification and tuning
* Configuring and supporting mainframe connectivity:
o VTAM and SNA definitions
o TCP/IP stack on z/OS
o OSA adapter and Coupling Facility communication
* Executing OS and product upgrades with industry‑standard utilities:
o SMP/E for PTF, APAR, and deliverable management
o z/OSMF workflows for streamlined maintenance
o Broadcom (e.g., Topaz), IBM, and BMC tooling for fix management and compliance reporting
o System logs and console messages
* Performance Monitoring
* Networking Knowledge
* Project Management & Hardware Refresh:
o Planning and leading hardware refreshes, feature activations, and migrations with minimal downtime, including IPL scheduling, vendor coordination, and change‑control governance.
o Producing clear system diagrams, runbooks, and upgrade plans, while collaborating with application teams, storage, networking, and security groups.
* Documentation and Communication
* 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.
Qualifications
* Multiple years of z/OS systems programming experience
* Very strong Parallel Sysplex skills
* Proficiency in 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:
o Assembler for exits and control blocks
o REXX for scripting and batch utilities
o JCL for job submission, parameterization, and workflow control
* Analytical troubleshooting of abends, storage hangs, and performance anomalies using:
o Dump analysis with IPCS
* 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
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