Senior API Engineer bei GSB

Senior API Engineer

We’re looking for a Senior API Engineer to helpwith the design and build of the APIs that power our digital customerexperiences. You’ll work with Java/Kotlin, Spring Boot, and modern APIstandards that create secure, reusable, and high-performing services.

In this role, you’ll partner with architectureteams to shape our API integration approach, ensuring security, scalability,and great customer outcomes. You’ll also play a key role in promoting bestpractices in testing, performance, and continuous delivery, with opportunitiesto work across OpenShift and AWS.

We value diversity of thought and experience,whether you’ve followed a traditional engineering path, or taken a differentjourney into tech, your skills and perspective are welcome here.

This is ahybrid role based in Brisbane, with flexibility to work from home two days aweek.

You’ll make an impact by:  

• Designing, building, and maintaining secure, reusable, and high-performing APIs using Java/Kotlin and Spring Boot.
• Apply API design standards and patterns to ensure consistency, scalability, and maintainability.
• Implement automated testing, CI/CD pipelines, and quality gates to embed resilience and reduce risk.
• Engineer APIs for observability, performance, and scalability, aligned with enterprise standards.
• Integrate APIs with identity and access management solutions to enable secure authentication and authorisation.
• Translate solution designs and architectural blueprints into working APIs that align to enterprise integration standards.
• Deploy and manage APIs on OpenShift and AWS, ensuring compliance with operational, security, and risk frameworks.
• Collaborate with architects, security, and platform teams to deliver safe, scalable, and resilient solutions.

Do things differently with us  

About you:

We know great engineers come from differentbackgrounds. You don’t need to tick every box below to apply, if you can showcapability and motivation, we’d love to hear from you.

• Significant experience in software engineering, with a strong focus on API design and development (often gained over 5+ years, but we’re open to different pathways).
• Experience delivering APIs in large, complex environments (financial services experience helpful but not essential).
• Strong capability with Spring Boot using Java and/or Kotlin, including building and deploying enterprise-grade APIs.
• Understanding of API standards, integration patterns, and reusable service design.
• Experience deploying and supporting APIs on containerised and cloud platforms (e.g. OpenShift, AWS).
• Familiarity with automated testing, CI/CD pipelines, and engineering for resilience and performance.
• Exposure to observability practices and tools to ensure performance, monitoring, and reliability.

Why Great Southern Bank? 

Whatever your role with us, you’ll be part of a force for good. We’re owned by our customers right here in Australia, so our success benefits everyday people and families. Working at Great Southern Bank, you’ll also enjoy a range of fantastic benefits, some examples include: 

• Helping you unlock a brighter future by investing in your development and wellbeing, offering you study leave, a day for you and professional wellbeing coaching.
• Benefits that support you and your wellbeing so that you can thrive at work and at home, today and tomorrow. Enjoy access to our wellbeing centre and the flexibility to work from home two days a week.
• Helping you to achieve your financial goals and positively impact your family and community. We offer discounts on a wide range of Great Southern Bank products and services such as savings and transaction accounts, insurance, home loans and more!

Imagineworking for a bank that truly helps people. You can. 
Questions? Please contact our Talent Acquisition team at [email protected]

At Great Southern Bank, we believe diverse teamscreate better solutions. We’re building a workplace where women and othergroups are supported through mentoring, career development opportunities andinclusive leadership. We know that flexibility matters whether that’s flexiblehours, hybrid working or career pathways that fit with life outside of work. Weencourage applications from people of all backgrounds, experiences, andidentities – especially women who want to grow their careers in technology.Even if you don’t meet every requirement, your unique perspective can make adifference