Senior Java Full-Stack Engineer (Calypso Platform)

ASX; Sydney; Hybrid; AUD 140,000 - 210,000; Full time

Benefits offered by this job

Hybrid working options

Flexible working arrangements

Job summary

ASX is seeking a senior Java Engineer to design, develop and support the Calypso platform and related enterprise applications. You will work within a high‑performing technology team to deliver scalable, secure solutions and continuous delivery capabilities.

You will partner with business, QA and DevOps to ensure platform stability, performance and reliable deployments, while contributing to architectural discussions and CI/CD improvements. Hybrid working arrangements are available in Australia.

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, PostgreSQL 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 GitLab, Jenkins and GitHub Actions.
• Experience with containerisation and orchestration technologies such as Docker and Kubernetes/OpenShift.
• 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.

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 DevOps 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.

Skills

Core Java

Distributed systems

REST APIs

Spring Framework

CI/CD

Docker/Kubernetes

Unix/Linux

Agile/Scrum

Stakeholder engagement

Tools

Kafka

Git

Jenkins

GitLab

Kubernetes

Oracle/PostgreSQL/SQL Server

Job description

ASX is seeking a senior Java Engineer to design, develop and support the Calypso platform and related enterprise applications. You will work within a high‑performing technology team to deliver scalable, secure solutions and continuous delivery capabilities.

You will partner with business, QA and DevOps to ensure platform stability, performance and reliable deployments, while contributing to architectural discussions and CI/CD improvements. Hybrid working arrangements are available in Australia.