Mainframe System Programmer

One of my clients is looking for an experienced Mainframe z/OS Systems Programmer to support and enhance a mission critical enterprise mainframe environment. This role focuses on the stability, performance, and evolution of core z/OS and CICS platforms within a highly regulated, always‑on environment.

• Take full technical ownership of the z/OS, JES2, CICS and associated third party software environments
• Plan and deliver end to end system maintenance, upgrades, and new release implementations
• Install, configure, customise, and migrate IBM and ISV software across production and non production environments
• Diagnose and resolve complex system issues to minimise risk and downtime
• Monitor system performance, capacity, and resource utilisation
• Work closely with technical and non technical stakeholders to communicate system changes and impacts
• Provide guidance and informal mentoring to less experienced team members when required

• Strong hands on experience in z/OS and CICS systems programming
• Proven experience delivering major mainframe upgrade or migration initiatives
• Background working with a broad range of ISV software from vendors such as Broadcom, BMC, and others
• Solid knowledge of System z hardware configuration including HCD, IOCP, and HMC
• Experience with mainframe storage and data management tools such as DFSMS, FDR A , DFDSS, and CA‑DISK
• Ability to read, write, and troubleshoot batch and online programs using REXX, Assembler, or similar
• Mainframe security administration using RACF or ACF2
• Web Sphere MQ
• Mainframe automation tooling such as OPS MVS
• Enterprise disk and virtual tape storage platforms
• Hybrid or office based depending on client requirements