Z​/OS Mainframe Systems Programmer

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Req

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.

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/A  for high-speed backups
  • Flash Copy or virtual tape replication for near-instant restores
• Optimizing system throughput and response times utilizing:
  • RMF and SMF report analysis
  • OMEGAMON or BMC Main View 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

• 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/A  for high-speed backups
  • Flash Copy 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…