Mainframe z/OS System Administrator/Programmer

DXC TechnologyToronto, ON

About The Position

DXC Technology (NYSE: DXC) is a leading enterprise technology and innovation partner delivering software, services, and solutions to global enterprises and public sector organizations — helping them harness AI to drive outcomes at a time of exponential change with speed. With deep expertise in Managed Infrastructure Services, Application Modernization, and Industry-Specific Software Solutions, DXC modernizes, secures, and operates some of the world’s most complex technology estates. Learn more on dxc.com. Mainframe z/OS System Administrator/Programmer We are seeking an experienced Mainframe z/OS System Administrator/Programmer to support enterprise z/OS environments, including system builds, software installation, upgrades, migrations, and disaster recovery activities.

Requirements

  • Strong experience with z/OS System Programming
  • Expertise with SMP/E, software installation, and maintenance
  • Experience with DR, IPLs, migrations, and hardware refreshes
  • Knowledge of Sysplex, Coupling Facility, IOGENs
  • Familiarity with OMVS / USS / zLinux
  • ITIL processes: Incident, Problem, Change, Asset Management
  • REXX, Assembler, and ISPF dialog scripting experience

Nice To Haves

  • zLinux SME experience
  • Large enterprise or regulated environment background

Responsibilities

  • Install and maintain z/OS (MVS) software using SMP/E
  • Perform software packaging, zaps, PTFs, HIPERs, and product upgrades
  • Support Maintenance IPLs, system refreshes, migrations, and CPU swaps
  • Execute LPAR builds, decommissions, and zLinux LPAR creation
  • Perform Disaster Recovery drills and system recovery activities
  • Maintain Coupling Facility / Sysplex, IOGENs, and I/O configurations
  • Manage OMVS / USS / zFS, web server and HTTP activities
  • Update and reassemble system exits
  • Process SMF data and maintain system profiles
  • Apply software license keys and maintain asset records
  • Participate in audits, vulnerability remediation, and change management
  • Provide 24x7 on‑call support as part of a rotation
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