Profectus is seeking an IBM Mainframe Developer to support the ongoing development and sustainment of a core business system within an agency of the Australian Government. Working as part of an established team of developers, business analysts and project staff, you will deliver mainframe code changes, resolve technical issues and help keep a long standing production system stable and secure. This is an associate level position and would suit a developer with solid COBOL and mainframe fundamentals looking to build their experience in a large, highly governed government environment.
Key Responsibilities
Write clear, testable and efficient mainframe code to agreed timeframes and milestones
Work across the full software development lifecycle in line with the agreed methodology
Produce technical specifications and assess operational feasibility of proposed changes
Integrate software components into working systems and maintain supporting documentation
Perform unit and component testing, and support functional and non-functional testing activities
Prepare time and effort estimates for development work
Take ownership of issues, following up open questions through to resolution
Support code deployment and release activities in line with change and cyber security standards
Provide technical support and troubleshooting, including debugging and remediation of production issues
Contribute to forward planning so mainframe systems continue to meet demand
Liaise with third party suppliers and service providers as required
Share technical knowledge and provide guidance to other team members




Identify and suggest improvements to development processes and tooling
Participate in a shared after hours on-call roster
Required Experience
Demonstrated experience in mainframe application development using COBOL, or a relevant tertiary qualification supported by practical development experience
Working knowledge of mainframe technologies including CICS, JCL, VSAM and DB2
Understanding of mainframe operating systems such as z/OS
Experience using debugging, telemetry and monitoring tools in a mainframe setting
Solid problem solving and analytical skills, with a methodical approach to fault finding
Clear written and verbal communication, including the ability to translate business requirements and maintain technical documentation
Ability to work effectively alongside developers, analysts, project managers and business users
Experience with PL/I
Exposure to IBM MQ Series
Familiarity with Rocket Data z/Services
Previous experience supporting systems within the Australian Government
Security Clearance Requirements
Must be an Australian Citizen
Must have an active Negative Vetting Level 1 (NV1) security clearance
Working Arrangements
Onsite
Canberra (preferred)
hybrid options may be considered for Brisbane based candidates
Why Profectus
Profectus partners with Australian Government agencies to deliver trusted ICT capability across complex delivery programs. We take a long term, relationship driven approach, supporting our people across the full lifecycle of their engagement while contributing to outcomes of national importance
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📌 Mainframe Developer (Queensland)
🏢 Profectus
📍 Queensland