Senior Mainframe Engineer
Westpac Group
Job Overview
Who's the hiring manager?
Sign up to PitchMeAI to discover the hiring manager's details for this job. We will also write them an intro email for you.
Job Description
About the Role
Create your best future and join Westpac as a Senior Engineer - Mainframe. This role sits within the Customer & Engineering unit, delivering customer servicing, credit assessment, and product originations technology via online and staff‑facing channels. In addition to maintaining group‑critical applications, you will help drive the adoption of AI‑driven, agentic development for COBOL systems —automating coding, testing, documentation, and change delivery while meeting the bank’s regulatory and security obligations.
Key Responsibilities
- Design, develop, and support COBOL and CAP COBOL applications on z/OS supporting high‑volume, business‑critical workloads.
- Maintain and enhance online IMS and batch applications, ensuring reliability, performance, and operational excellence.
- Develop and support DB2, IMSDB and sequential file-based data processing solutions.
- Act as a subject matter expert for COBOL and mainframe practices, defining coding standards, patterns, and modernisation guidelines.
- Ensure that agreed standards and processes within Westpac are adhered to ensure fulfilment of regulatory obligations.
- Apply an AI‑first approach to automate coding, testing, data mappings, orchestration, and documentation.
What You Need
- Strong experience in COBOL development within large‑scale enterprise or banking environments.
- Exposure to or hands‑on experience with CAP COBOL in production systems.
- Proven experience working with IMS DB (data access, schemas, program interfaces).
- Solid understanding of z/OS mainframe environments.
- Proven experience with Endeavor.
- Exposure to Git, Bitbucket.
- Computer Science (or closely related degree) with a major in software engineering or equivalent.
Why Join Us?
We’re obsessed with becoming our customers' #1 banking partner for life and we’re looking for people who are passionate about helping us achieve that goal. In return, we’re committed to making Westpac the best place to work in the country. Here are just a few of the ways we’re already doing that:
- Special offers on banking products and discounts from top brands, including generous employee-only mortgage rates!
- Flexible work arrangements to help you achieve a greater work/life balance, and a variety of leave options including Culture, Lifestyle and Wellbeing leave.
- Tailored learning and development opportunities to help your grow your career within the bank.
- Lots of opportunities to ‘give back’ to the Community by getting involved in our many volunteering initiatives.
Key Skills/Competency
- COBOL
- CAP COBOL
- z/OS
- IMS DB
- DB2
- Mainframe
- Endeavor
- Git
- Bitbucket
- Software Engineering
How to Get Hired at Westpac Group
- Tailor your resume: Highlight COBOL, CAP COBOL, z/OS, and IMS DB experience.
- Showcase banking experience: Emphasize large-scale enterprise or banking environments.
- Demonstrate AI automation: Detail any experience with AI-driven development.
- Prepare for technical questions: Review z/OS, DB2, and Endeavor specifics.
- Understand Westpac values: Align your application with their customer-centric mission.
Frequently Asked Questions
Find answers to common questions about this job opportunity
Explore similar opportunities that match your background