Connex Developer for Mainframe Payments Modernisation

Showtime Consulting; City of Melbourne; On-site; AUD 100,000 - 150,000; Full time

Job summary

Showtime Consulting seeks an experienced Connex Developer / Support Specialist to maintain and enhance the Connex Payment Switch on IBM Mainframe (z/OS). You will ensure stability, performance, and regulatory compliance while supporting modernisation initiatives.

Ideal candidates bring strong Connex and Mainframe expertise, with 2–20 years in Connex support or related payments technology roles, and a collaborative, proactive approach.

Qualifications

• Bachelor's degree in Computer Science, IT, Engineering, or related discipline.
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Responsibilities

• Provide build, enhancement, and production support for the Connex Payment Switch on IBM Mainframe (z/OS).
• Review, assess, and provide recommendations on vendor-proposed Connex changes and customisations.
• Collaborate with Solution Designers, Architects, and delivery teams to support business and technical initiatives.
• Enhance and maintain Host Scheme Payment Interfaces (PIs) during regulatory and compliance releases.
• Support migration and modernisation initiatives, including Connex integration with new payment switch platforms.
• Monitor the health, performance, and stability of the Connex Mainframe environment.
• Apply vendor-supplied Connex maintenance updates, including configuration and code changes.
• Implement additions, modifications, and deletions of Payment Interfaces (PIs), Transaction Handlers (THs), and associated batch processes.
• Investigate, troubleshoot, and develop fixes for Connex-related production incidents and defects.
• Participate in system testing, release management, and deployment activities to ensure high-quality delivery.

Skills

Connex experience

Payments processing

Troubleshooting

Analytical thinking

Collaboration

Self-motivated

Teamwork

Education

Bachelor's degree in Computer Science, IT, Engineering, or related

Tools

IBM z/OS

COBOL

Assembler

Db2

IBM JCL

Finsim / Paysim

Java

Spring Boot

REST APIs

GitHub

AWS

Splunk

Kafka

Job description

Showtime Consulting seeks an experienced Connex Developer / Support Specialist to maintain and enhance the Connex Payment Switch on IBM Mainframe (z/OS). You will ensure stability, performance, and regulatory compliance while supporting modernisation initiatives.

Ideal candidates bring strong Connex and Mainframe expertise, with 2–20 years in Connex support or related payments technology roles, and a collaborative, proactive approach.