Senior API Engineer We’re looking for a Senior API Engineer to help with the design and build of the APIs that power our digital customer experiences. You’ll work with Java/Kotlin, Spring Boot, and modern API standards that create secure, reusable, and high-performing services. In this role, you’ll partner with architecture teams to shape our API integration approach, ensuring security, scalability, and great customer outcomes. You’ll also play a key role in promoting best practices in testing, performance, and continuous delivery, with opportunities to work across OpenShift and AWS. We value diversity of thought and experience, whether you’ve followed a traditional engineering path, or taken a different journey into tech, your skills and perspective are welcome here. This is a hybrid role based in Brisbane, with flexibility to work from home two days a week. 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 different backgrounds. You don’t need to tick every box below to apply, if you can show capability 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! Imagine working for a bank that truly helps people. You can. Questions? Please contact our Talent Acquisition team at careers@gsb.com.au At Great Southern Bank, we believe diverse teams create better solutions. We’re building a workplace where women and other groups are supported through mentoring, career development opportunities and inclusive leadership. We know that flexibility matters whether that’s flexible hours, hybrid working or career pathways that fit with life outside of work. We encourage applications from people of all backgrounds, experiences, and identities – especially women who want to grow their careers in technology. Even if you don’t meet every requirement, your unique perspective can make a difference
