Job Description, Responsibilities & Requirements
About the Position
Lead z/OS Administrator
00068896661
- Date published: May 19, 2026
- Location: Melbourne, Australia
- Job category: Digital
- Work model: Hybrid
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.
Responsibilities
- 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
Requirements
- 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
Nice to Have
- 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
We Offer
Financial wellbeing
We regularly review market data to ensure compensation reflects the value you bring. Your benefits extend beyond pay and may include retirement plans, financial education, etc.
Physical and mental health
We empower you to prioritize your wellbeing through paid time off, flexible working where possible, healthcare plans, counselling, our Mental Health Allyship program and more.
Your career, your way
With 350,000+ roles at Cognizant, you’ll have opportunities to explore new technologies, industries and locations-and build the skills you need to grow your career.
Real-world impact
Think about the biggest brands you rely on. Chances are, they rely on us to help strengthen their business. Here, you’ll turn bold ideas into solutions that improve lives everywhere.
About the Company
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.
Applicants may be required to attend interviews in person or by video conference. In addition, candidates may be required to present their current state or government issued ID during each interview.
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, state 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.
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