Principal Systems Programmer

Rocket Software

full-time

Posted on: 9/2/2025

Location: 🇬🇧 United Kingdom

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Lead

CloudLinux

About the role

Join IT Mainframe Services team to provide z/OS, z/VM & z/Linux infrastructure in support of Rocket’s R&D community
Install, customize and maintain mainframe software and manage mainframe hardware
Provide technical guidance to R&D community and drive mainframe modernization initiatives
Conduct problem determination and root cause analysis for z/OS environments
Provide first line of support and participate in scheduled on-call rotations
Support over 150 z/OS environments and multiple z/Linux images and VSE
Work with a global team of engineers and participate in IBM/ISV beta programs

Deep understanding of z/OS architecture and RACF
Solid background installing and maintaining IBM and ISV mainframe products
Experience with root cause analysis and problem determination on z/OS
Experience participating in IBM and ISV beta programs
Experience with DFSMS, SMPe, ServerPac, PDO, DFDSS, DFHSM, ICF Catalogs, HCD, IODF
Experience with REXX, JCL, DASD and Tape management products
Experience with Communications Server, SDSF, USS, GTF, IPCS
Excellent communication and organizational skills
Ability to manage large, multi-discipline technical projects
Successful track record of leading technical projects and driving mainframe modernization initiatives
Proven ability to multi-task and work in a fast-paced environment
Security mindset and deep RACF experience
Provide first line of support (scheduled on-call) for the mainframe environment