The key duties of the position include:

We are seeking an experienced IT Mainframe DB2 Database Administrator to join our Enterprise Solutions and Technology (EST) business area.

As an IT Mainframe DB2 Database Administrator, within the Mainframe Delivery Centre, you’ll manage multiple databases, data integration and software and database administration tools that support critical business systems.

You will manage complex technical and operational work, contribute to a range of detailed or sensitive projects, and provide expert advice to technical specialists, project teams, business stakeholders, vendors and service providers. You’ll exercise sound judgement when resolving complex mainframe database issues, assess risks and recommend solutions that support the administration of the Australian taxation system. You’ll support and collaborate with technical specialists and business stakeholders in the provision of database administration, problem solving and issues management.

You will be a central contributor to mainframe DB2 database design and integration, monitor database performance, collect and analyse performance statistics to support tuning improvements, and assist with the creation and management of test database environments.

You will collaborate with external service providers to ensure the optimal administration and performance of production and development mainframe DB2 databases to meet business needs and support peak period demands.

As part of a highly skilled team, you’ll help drive DB2 process improvements, modernisation and automation of existing services, ensuring the mainframe is ready for business at all advertised times.

To support business-critical operations, you’ll be required to participate in an on-call roster to provide out-of-hours support.

These roles may be offered on an ongoing or non-ongoing basis in Brisbane CBD, Canberra, Melbourne CBD or Sydney CBD.





We embrace the strength of diversity – through our people and the perspectives they bring.

We are committed to inclusive recruitment practices and encourage applications from people with disability or neurodivergence, Aboriginal and Torres Strait Islander peoples, and individuals from all backgrounds. Reasonable adjustments can be provided throughout the selection process.

Our ideal candidate:

• is a highly skilled mainframe DB2 specialist who provides technical leadership, shares knowledge with colleagues, and supports the adoption of new technologies, tools and practices

• has advanced experience administering and supporting mainframe DB2 database environments, including the use of software and utilities for table reorganisation, data load, high-performance unload, image copy and log analysis

• has strong knowledge of mainframe DB2 database design, integration, migration, security, routine maintenance, backup, archive and recovery, disaster recovery planning and testing

• investigates and resolves complex mainframe DB2 database performance and security incidents, analyses their technical and business impacts, and implements effective remedial solutions

• identifies and implements improvements to address operational risks, service issues and opportunities for continuous improvement, automation and modernisation.

Getting to know the Australian Taxation Office

We are globally recognised for leading best practice in the administration of tax and superannuation, promoting a level playing field and fairness for all. Our work makes a real difference to the lives of Australians and positively impacts their economic and social wellbeing. Our people are problem-solvers, curious, dynamic and are at the heart of our success. We are inclusive and embrace the strength of diversity. Adaptable working arrangements are available to help balance work and life. We offer more than you expect. We offer a place where you can belong, a say in how you make a difference, and the chance to grow a successful career.

📌 IT MainframeDatabase Administrator (Sydney)
🏢 Australian Taxation Office
📍 Sydney