- Engineer and evolve critical IBM Z, z/OS and mainframe storage infrastructure supporting Australia’s largest bank.
- Broaden your expertise across hardware, storage, systems engineering, resilience, automation and emerging AI-assisted engineering.
- Solve complex infrastructure challenges while helping shape a secure, resilient and modern mainframe platform.
Join our Mainframe Platform Engineering team and help engineer, maintain and continuously improve the IBM Z infrastructure, z/OS systems and storage platforms that underpin critical banking services.
This is an opportunity to work across the mainframe technology landscape rather than being confined to one specialisation. You’ll bring established expertise in one or more areas while continuing to build capability across hardware, storage, operating systems, connectivity, performance, resilience and automation.
See yourself in our teamYou’ll join a technology environment where complex, business-critical systems demand rigorous engineering, collaboration and continuous learning. The role offers the opportunity to deepen your existing expertise while developing capability across adjacent mainframe technologies.
In this role, you will:
- Engineer and enhance enterprise IBM Z, z/OS and mainframe storage infrastructure with a focus on availability, resilience, security and performance.
- Support hardware installations, upgrades, capacity changes, storage migrations and technology refreshes.
- Engineer storage infrastructure including DASD, storage subsystems, logical volumes, FICON and SAN connectivity.
- Analyse storage utilisation, I/O performance, channel activity and system capacity to identify and address performance constraints.
- Diagnose complex hardware, storage, operating system and performance issues and drive root-cause analysis and permanent remediation.
- Support storage replication, disaster recovery and infrastructure resilience capabilities and participate in recovery testing.
- Develop automation and tooling that improves provisioning, monitoring, maintenance and operational processes.
- Explore responsible uses of AI-assisted engineering for troubleshooting, automation, documentation, knowledge discovery and analysis.
Bring solid experience in mainframe infrastructure engineering, systems programming, storage engineering or a closely related discipline. You don’t need to be a specialist in every part of the IBM Z ecosystem. Of equal importance is strong engineering judgement, curiosity and the ability to learn unfamiliar technologies and solve problems across traditional technical boundaries.
Experience across several of the following will set you up for success:
- IBM Z infrastructure and z/OS, with knowledge of technologies such as JES2, TSO/E, ISPF and JCL.
- Enterprise mainframe storage, including DASD configuration, provisioning, capacity management and performance optimisation.
- IIBM DS8000 and TS7 storage technology, FICON/SAN connectivity or mainframe I/O architecture.
- Storage replication, disaster recovery and resilience technologies such as GDPS, HyperSwap, Metro Mirror or Global Mirror.
- Monitoring, diagnostics and performance analysis using technologies such as RMF, SMF, OMEGAMON or comparable tooling.
- Automation or scripting using REXX, Ansible, Python or related technologies.
- Delivering complex infrastructure changes safely in large-scale, business-critical environments.
- Strong troubleshooting, technical risk assessment, collaboration and knowledge-sharing capability.
Exposure to Parallel Sysplex, Coupling Facilities, System Automation, NetView, CICS, Db2, IMS, IBM MQ, Endevor or broader IBM Z hardware and software is advantageous, but deep expertise across every technology is not expected.
The advertising framework specifically recommends focusing on transferable capability and potential, distinguishing essential from desirable experience and avoiding overly long requirement lists, so I’ve consolidated the original technology catalogue accordingly.
Learning and development
You’ll have the opportunity to deepen your established specialisation while intentionally developing expertise in adjacent areas, whether that means moving from storage into z/OS and hardware, strengthening automation capability, or exploring emerging AI-assisted engineering practices.
The focus is on combining strong systems engineering expertise with new tools and approaches that can help engineers investigate problems, automate effectively, improve documentation and make complex platform knowledge more accessible.
Working with usAt CommBank, we're committed to creating an accessible, inclusive and respectful workplace. If you require support or adjustments, please let us know. We welcome applications from people of all backgrounds and we're particularly committed to making a positive difference for Aboriginal and/or Torres Strait Islander Peoples. For support please contact 1800 989 696.
If you're already part of the Commonwealth Bank Group (including Bankwest, x15ventures), you'll need to apply through Sidekick to submit a valid application. We’re keen to support you with the next step in your career.
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Skills Required
- Solid experience in mainframe infrastructure engineering, systems programming, storage engineering, or a closely related discipline
- Experience with IBM Z and z/OS technologies, including JES2, TSO/E, ISPF, or JCL
- Experience with enterprise mainframe storage, including DASD configuration, provisioning, capacity management, and performance optimization
- Experience with storage technologies, FICON/SAN connectivity, or mainframe I/O architecture
- Experience with storage replication, disaster recovery, or infrastructure resilience technologies
- Experience with monitoring, diagnostics, and performance analysis using RMF, SMF, OMEGAMON, or comparable tools
- Automation or scripting experience using REXX, Ansible, Python, or related technologies
- Experience delivering complex infrastructure changes safely in large-scale, business-critical environments
- Strong troubleshooting, technical risk assessment, collaboration, and knowledge-sharing skills
- Experience with Parallel Sysplex, Coupling Facilities, System Automation, NetView, CICS, Db2, IMS, IBM MQ, Endevor, or broader IBM Z hardware and software
Commonwealth Bank Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Commonwealth Bank and has not been reviewed or approved by Commonwealth Bank.
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Leave & Time Off Breadth — The bank offers additional Life Leave, the option to purchase up to four extra weeks, pet leave, and paid volunteering leave alongside flexible-working options. Public materials indicate these leave features compare well within Australian banking.
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Parental & Family Support — Permanent employees can access up to 18 weeks of paid parental leave, and superannuation is paid for up to 34 weeks of unpaid parental leave. These provisions extend support for new parents beyond standard settings.
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Wellbeing & Lifestyle Benefits — Access includes CBHS Health Fund, Fitness Passport, a 24/7 wellbeing platform with telehealth, an Employee Assistance Program, and employer‑paid income protection for up to two years, alongside staff banking perks and share plans. This combination provides day‑to‑day value across health, protection, and financial perks.
Commonwealth Bank Insights
What We Do
Australia’s leading provider of financial services including retail, premium, business and institutional banking, funds management, superannuation, insurance, investment and sharebroking products and services. We are a business with more than 800,000 shareholders and over 52,000 employees. We offer a full range of financial services to help all Australians build and manage their finances.
