Mainframe Software Developer

Location: Canberra, Melbourne, Brisbane

Employment Type: Full-time/Permanent

Experience Level: Mid to Senior (2 to 10+ years)

Work on large-scale, mission-critical systems with modernisation initiatives

Security Requirement: Due to the secure nature of this role, we are seeking candidates who are Australian Citizens or individuals with active security clearance, or those who are eligible to obtain clearance.

About The Role

We are seeking experienced Mainframe Software Developers to join a collaborative team focused on innovation, quality, and continuous improvement. This role is suited for professionals passionate about mainframe technologies and eager to contribute to high-impact systems across government and enterprise environments.

Key Responsibilities

Design, develop, test, and maintain COBOL-based applications in a z/OS mainframe environment

Write and optimise complex SQL queries for DB2 for z/OS

Integrate COBOL applications with DB2 databases and IBM MQ messaging systems

Manage user access and system security using RACF

Participate in code reviews, debugging, and performance tuning

Collaborate with testers, analysts, and DevOps engineers

Contribute to system documentation and knowledge sharing

Support continuous improvement and modernisation efforts using Micro Focus tools

Required Experience

COBOL (e.g., IBM COBOL for z/OS)

DB2 for z/OS and SQL query optimisation

DB2 utilities (LOAD, UNLOAD, REORG)

COBOL-DB2 integration

RACF for user profile management and access control

IBM MQ for message queue integration

z/OS environment tools: JCL, TSO/ISPF, VSAM file handling

Preferred Experience/Qualifications

Micro Focus Enterprise Developer / Analyzer

Experience in mainframe application modernisation

Familiarity with Agile and DevOps practices

Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent experience)

Certifications in mainframe technologies are advantageous

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