About the role
As a Lead z/OS Administrator, you will make an impact by leading the administration, maintenance, and performance of enterprise mainframe environments. You will be a valued member of the Infrastructure & Cloud Operations team and work collaboratively with your manager, a team of mainframe engineers, and cross-functional technology stakeholders.
In this role, you will:
· Lead and mentor a team of mainframe administrators while owning end-to-end z/OS system administration across IBM z/OS environments (v2.4 and v2.5)
· Plan and execute z/OS version upgrades, LPAR builds, and the installation of patches, fixes, and ISV products using SMP/E
· Maintain and optimize system parameters and parmlib configurations, including WLM, RMF, SMF, and zOSMF setup
· Monitor and report on z/OS system performance, proactively identifying and resolving incidents related to z/OS issues
· Manage relationships and products across key vendors including CA, BMC, and Compuware, ensuring effective installation and ongoing maintenance
What you need to have to be considered
· Strong hands-on z/OS system administration experience, with demonstrated ability to lead a technical team
· Deep expertise in IBM z/OS (v2.4 and v2.5), System z architecture, and Parallel Sysplex concepts
· Strong proficiency with SMP/E for software installation and maintenance, including patches and ISV products
· Proven experience with z/OS performance monitoring and reporting tools, including RMF and SMF
· Solid working knowledge of WLM, zOSMF configuration, parmlib maintenance, and incident management on z/OS platforms
These will help you stand out
· Experience managing a broad portfolio of vendor products across CA, BMC, and Compuware in a large enterprise environment
· Familiarity with mainframe LPAR build processes and capacity planning
· Strong communication skills with the ability to translate technical mainframe concepts for non-technical stakeholders
About us
Cognizant (Nasdaq: CTSH) is an AI Builder and technology services provider, building the bridge between AI investment and enterprise value by building full-stack AI solutions for our clients. Our deep industry, process and engineering expertise enables us to build an organization’s unique context into technology systems that amplify human potential, realize tangible returns and keep global enterprises ahead in a fast-changing world. See how at www.cognizant.com or @cognizant.
Additional employment information
Compensation information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law.
Language requirements vary depending on roles, but we ask that all candidates have basic English proficiency for company-wide communications purposes. For roles based in Quebec, professional English proficiency is required, as you’ll deliver services to and collaborate with stakeholders outside the province who may not speak French.
Cognizant is an equal opportunity employer. Your application and candidacy will not be considered based on race, color, sex, religion, creed, sexual orientation, gender identity, national origin, disability, genetic information, pregnancy, veteran status or any other characteristic protected by federal, provincial or local laws.
If you have a disability that requires reasonable accommodation to search for a job opening or submit an application, please email [email protected] with your request and contact information.











