Senior z/OS Systems Programmer (Contract) – Upgrades & Tuning in London

A leading technology company in the United Kingdom is seeking a senior, hands-on z/OS Systems Programmer for a contract role. This position involves supporting and optimizing an IBM mainframe environment, with a focus on system upgrades and resolving performance issues. Ideal candidates will possess strong REXX and JCL skills, along with experience in mainframe tooling. Successful candidates will work independently and take ownership of core z/OS subsystems in a fast-paced environment.
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