Senior ObjectStar Software Engineer (Mainframe Developer)

Services Australia

Australian citizens only Baseline clearance Capital city of the ACT, Victoria or South Australia ONLY Closes 17 Nov 2026

Eligibility - please read before applying

This role is open to Australian citizens only. Applicants must also hold a current and ACTIVE Baseline Australian Government security clearance. An ability to obtain a clearance is NOT sufficient for this role.

This is an Australian Federal Government engagement based in Australia. Applications from candidates who are not Australian citizens, or who do not meet the security clearance requirement above, cannot be considered - regardless of technical experience. We are unable to sponsor visas, and this role cannot be performed remotely or from offshore.

About the Role

Services Australia is seeking a minimum of one Senior ObjectStar Software Engineer / Senior Developer (EL1 equivalent) to develop and support ObjectStar applications on the mainframe and deliver complex software engineering and migration outcomes, working from Canberra, Melbourne or Adelaide - full time onsite for the first six weeks, then hybrid with usually at least three days a week onsite. The role provides technical leadership across ObjectStar applications, software development, system integration, release management and application modernisation: technical design, high-quality code and long-term code base maintenance, batch job build and support, go-live and production support, analysis, prototyping and unit testing, risk management and cost analysis.

ObjectStar development and support:



develop and support ObjectStar applications; provide technical leadership across ObjectStar applications, software development, system integration, release management and application modernisation and migration initiatives. Engineering: create software and technical designs for complex solutions; develop high-quality code and maintain the code base long term; perform analysis, design, development, prototyping, unit testing and maintenance; analyse technical requirements to support project evaluation; ensure compliance with endorsed development methodologies. Operations: build and support batch jobs; provide go-live, production and batch support; identify, investigate and resolve complex ICT issues. Management: give technical advice; assess, communicate, monitor and control risk; manage own and others' workloads; deliver projects in the assigned area; perform cost analysis.

Key Responsibilities

- Extensive hands-on ObjectStar (TIBCO Object Service Broker) application design and development, with developer testing.
- Mainframe application support - IMS, DB2 and ObjectStar highly valued.
- Batch job building and production / batch process support.
- Technical leadership in software development, integration, release management and modernisation / migration.




- Transparent written and verbal communication; documents requirements and solutions.
- Canberra, Melbourne or Adelaide only; onsite full time for the first six weeks.
- MUST HOLD an active Baseline security clearance (Australian citizens only).
- Demonstrated experience in design and developing ObjectStar applications, developer testing and providing ongoing applications, batch processes support.
- Mainframe applications Support, highly valued IMS, DB2 and ObjectStar experience.
- COBOL development experience is valued.
- Experience in providing Production applications and batch processes support.
- Clear verbal and written communication and requirements, solutions documenting.

Citizenship Australian citizens only

Security Clearance Baseline - must hold an ACTIVE clearance at time of application

Contract Minimum of one position. Estimated start Friday 1 January 2027. Initial contract up to 12 months; extension term 'Other' - up to a maximum of 24 months. Senior - EL1 equivalent. A maximum of three candidates per seller.

Location Capital city of the ACT, Victoria or South Australia ONLY (Canberra, Melbourne or Adelaide) - other locations will not be accepted. Full time onsite for the first six weeks, then a hybrid arrangement, usually at least three days a week onsite, if the worker lives within reasonable travel time and distance of the office. Maximum hours published as 80 per week.

Max Candidates 3 per seller

This opportunity is sourced through the Australian Government's BuyICT panel for ICT Labour Hire services.

📌 Senior ObjectStar Software Engineer (Melbourne)
🏢 Axiom Data
📍 Melbourne