Title
z/OS Mainframe Systems Programmer (hybrid: remote + Sheffield)
Overview
NTT DATA is 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, primarily from IBM and Computer Associates (CA).
Responsibilities
* Upgrade, maintain, and support the z/OS operating system.
* Upgrade, 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 run as effectively and efficiently as possible.
* Manage 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.
* Ensure 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.
* Optimize system throughput and response times:
o RMF and SMF report analysis.
o OMEGAMON or BMC MainView dashboards.
o WLM classification and tuning.
* Configure and support mainframe connectivity:
o VTAM and SNA definitions.
o TCP/IP stack on z/OS.
o OSA adapter and Coupling Facility communication.
* Execute 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.
Skills and Qualifications
* Multiple years of z/OS systems programming experience.
* Strong Parallel Sysplex skills.
* Proficiency in z/OS, TSO/ISPF, USS, SDSF, JCL, RACF.
* Extensive experience installing 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.
o SLIP and trace tools.
o System logs and console messages.
* Project Management & Hardware Refresh:
o Plan and lead hardware refreshes, feature activations, and migrations with minimal downtime, including IPL scheduling, vendor coordination, and change‑control governance.
* Produce clear system diagrams, runbooks, and upgrade plans, collaborating with application teams, storage, networking, and security groups.
* Confident, able to work independently and start contributing from day one.
* Excellent problem‑solving skills and team player.
* Off‑hour support for software changes when required.
* Staying current on IBM Redbooks, z/OS release notes, firmware updates, and attending vendor training or industry conferences.
Work Setup
Hybrid working: remote + on client site (Sheffield).
Benefits
You will enjoy a comprehensive, locally competitive benefits package.
Equal Opportunity Employment
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 more information on our EEO rights under the law, see our EEO Policy Statement. For Pay Transparency information, see our Pay Transparency statement.
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