Senior Mainframe Engineer – COBOL/IBM MQ, Core Banking

Westpac New Zealand Limited; Wellington; Hybrid; NZD 120,000 - 180,000; Full time

Benefits offered by this job

4 weeks holiday + 5 wellbeing days

2 volunteer days per year

Banking benefits & insurance discounts

Growth and development opportunities

Job summary

Westpac New Zealand Limited is seeking a Senior Software Developer – IBM Mainframe to design, develop and maintain mainframe applications across batch and online processing. You will work with core banking platforms and connect with card-processing and customer systems, ensuring reliability, resilience and security.

You will contribute to testing, code reviews, releases and documentation while collaborating with cross-functional teams and providing after-hours production support when required.

Qualifications

• Strong experience in mainframe or host-based environments.
• Experience with batch and online/real-time processing.
• Experience with IBM MQ or enterprise messaging and system integration.
• At least 5 years experience with COBOL and CICS.
• Strong database, analytical and problem-solving skills.
• Understanding of secure development and operational resilience.

Responsibilities

• Design, develop, test and maintain IBM Mainframe applications and services.
• Develop and support batch, online and system integration solutions.
• Troubleshoot production issues and identify opportunities for continuous improvement.
• Contribute to testing, code reviews, releases and technical documentation.
• Work closely with engineers, product teams and other technology specialists to deliver secure and reliable solutions.
• Participate in production and after-hours support when required.

Skills

Mainframe development

Batch & online processing

COBOL & CICS

IBM MQ / Enterprise messaging

Problem solving

Secure development & resilience

Banking/payments knowledge

Tools

IBM MQ

Enterprise messaging

Job description

Westpac New Zealand Limited is seeking a Senior Software Developer – IBM Mainframe to design, develop and maintain mainframe applications across batch and online processing. You will work with core banking platforms and connect with card-processing and customer systems, ensuring reliability, resilience and security.

You will contribute to testing, code reviews, releases and documentation while collaborating with cross-functional teams and providing after-hours production support when required.