Java Full Stack Engineer in Sydney

ASX: Powering Australia's financial markets

Why join the ASX?

When you join ASX, you're joining a company with a strong purpose - to power a stronger economic future by enabling a fair and dynamic marketplace for all.

In your new role, you'll be part of a leading global securities exchange with a strong brand. We are known for being a trusted market operator and an exciting data hub.

Want to know why we are a great place to work, click on the link to learn more.

www. asx. com. au/about/careers/a-great-place-to-work

We are more than a securities exchange!

The ASX team brings together talented people from a diverse range of disciplines.

We run critical market infrastructure, with 1 in 3 people employed within technology.

Yet we have a unique complexity of roles across a range of disciplines such as operations, program delivery, financial products, investor engagement, risk and compliance.

We're proud to foster a workplace where diversity is celebrated and inclusion is part of our everyday culture.

Our employee-led networks champion LGBTIQ+ inclusion, promote gender equality, accessibility and wellbeing, inspire giving and volunteering, and celebrate cultural and religious events, creating a sense of belonging for all.

As an AWEI Bronze employer and member of the Champions of Change Coalition for gender equality, we're committed to a fair and inclusive workplace where everyone can thrive.

Key purpose of the role

Java Engineer on Calypso Platform is responsible for designing, customising and supporting the Calypso trading and clearing platform.

The role combines development, BAU support and enhancements, working closely with business, QA and Dev Ops teams to ensure platform stability, scalability and continuous delivery of new capabilities.

Your Team

You will be part of a high-performing engineering team within the Technology and Delivery division, responsible for designing, building and operating scalable, resilient platforms that underpin critical market infrastructure.

The team works closely with product and operations to deliver robust, secure and high-performance systems, driving engineering excellence, modern architecture and continuous improvement to support ASX's mission of a stable and efficient marketplace.

• Your responsibilities
• Design, develop and maintain enterprise applications using Java and related technologies.
• Deliver new features, enhancements and technical solutions aligned with business and platform requirements.
• Provide BAU support, including incident investigation, root cause analysis and defect remediation.
• Develop and maintain REST APIs, microservices and event-driven integrations.
• Build and support integrations with upstream and downstream platforms, databases and messaging systems.
• Participate in application design, code reviews and architecture discussions.
• Contribute to platform performance optimisation, scalability and reliability initiatives.
• Support release management activities, including deployment, regression testing and production rollout.
• Collaborate closely with QA teams to improve automation coverage and overall software quality.
• Contribute to CI/CD pipelines and deployment automation using modern Dev Ops practices.
• Ensure solutions comply with security, governance and operational standards.
• Create and maintain technical documentation, solution designs, operational runbooks and support procedures.
• Participate in Agile ceremonies and contribute to continuous improvement initiatives.
• Your experience and qualifications
• 6-8+ years of hands-on Java development experience in enterprise environments.
• Strong expertise in Core Java, including Collections, Concurrency, Multithreading, JVM Internals and JDBC.
• Experience building and supporting distributed systems, RESTful APIs and microservices architectures.
• Strong experience with Spring Boot, Spring Framework and related Java ecosystem technologies.
• Experience with relational databases such as Oracle, Postgre SQL or SQL Server, including advanced SQL development.
• Experience with messaging and event-driven architectures using Kafka, JMS or similar technologies.
• Proficiency in Git-based source control and modern CI/CD pipelines, including Git Lab, Jenkins and Git Hub Actions.
• Experience with containerisation and orchestration technologies such as Docker and Kubernetes/Open Shift.
• Strong debugging, troubleshooting and performance-tuning skills.
• Experience working in Unix/Linux environments and scripting.
• Solid understanding of software engineering principles, design patterns and secure coding practices.
• Experience delivering solutions within Agile/Scrum environments.
• Strong stakeholder engagement, communication and collaboration skills.
• Nice to have
• Experience in Capital Markets, Trading, Clearing, Risk or Post-Trade platforms.
• Experience with cloud platforms such as AWS.
• Experience with Infrastructure as Code and automation tools such as Ansible or Terraform.
• Knowledge of observability and monitoring
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