Java Software Engineer

CYOS Solutions; City of Brisbane; On-site; AUD 152,000 - 179,000; Full time

Job summary

CYOS Solutions in Australia is seeking an experienced Java-focused developer to support and enhance the NEXUS system for AMSA. You will work within a small team on back-end Java, AWS cloud components, and Oracle data layers, contributing to data integration and operational readiness.

You will also participate in building RESTful services, OpenAPI specifications and a web UI layer using ReactJS. Hybrid work is available, with an emphasis on on-call readiness and adherence to design standards.

Qualifications

• At least 8 years Java experience with enterprise design patterns.
• Experience with Java Web services: SOAP, REST, OpenAPI/XSD; Spring/SpringBoot.
• Unix/Linux, Bash experience.
• Maven, CI/CD, unit and system integration testing.
• Oracle database experience and data modelling.
• Willingness to be 24x7 on-call; rare outages.
• AWS development including EC2/Lambdas/API Gateway/S3.

Responsibilities

• Develop enterprise-grade software using Java and Oracle tech.
• Develop/maintain web UIs with ReactJS, CSS, HTML.
• Design data models and implement with Oracle DB.
• Create RESTful services and data integration components.
• Maintain DevOps workflows with Jenkins, Git, Maven/Ant.
• Prepare design artefacts and technical specifications.
• Support Nexus releases per established processes.
• Provide guidance to Applications Director & CIO.

Skills

Java

Communication

Unix/Linux

Bash

DevOps

On-call readiness

Tools

AWS

Jenkins

Git

Maven

OpenAPI/Swagger

Oracle DB

Job description

Application closing date: Sunday, 09 August 2026 • 11:59pm, Canberra time

Estimated start date: Tuesday, 01 September 2026

Location of work: QLD

Working arrangements: Hybrid working arrangements considered

Length of contract: 12 months

Contract extensions: 2 x 12 months

Security clearance: Must have Baseline at commencement

Rates: $110 - $130 per hour (inc. super)

In this role you will support and develop the Australian Maritime Safety Authority's (AMSA) life critical application NEXUS. NEXUS is used by AMSA's Rescue Response Centre Australia (RCCA) to help coordinate assets in maritime and aviation search and rescue incidents and triage and respond to pollution events.

You will support the following Nexus users:

• RCCA Staff (RCCA).
• RCCA Intelligence Operators.

NEXUS System consists of multiple components built on various technologies/languages (.NET, Java, AWS, Oracle PL/SQL, ArcGIS) providing NEXUS users the capability to perform their operational business functions. This role will focus on supporting, maintaining and developing solutions for NEXUS cloud and back-end Java/AWS/Oracle components. NEXUS back-end comprises of multiple Java components and Java EE JMS components used for data integration and message processing. It also consists of AWS cloud components used to provide external integrations with AMSA’s external clients/partners.

You will work in a small team of highly skilled Java and .NET developers/SME’s with years of business knowledge that all contribute to AMSA’s in-house support of Nexus.

Your responsibilities will include:

• Develop enterprise-grade software using Java and Oracle technologies
• Develop / maintain web-based UI using ReactJS, CSS and HTML
• Design data models, translate to physical data models and implement using Oracle Database
• Implement CRUD operations on the database using Java Object-Relational Mapping frameworks
• Produce and maintain detailed design artefacts & technical specifications
• Create and work with RESTful OpenAPI specifications, SOAP WSDLs, XML Schemas
• Develop and maintain DevOps workflows using Jenkins, Git and Maven & Ant
• Perform and build Nexus software releases following established processes
• Providing advice and support for Applications Director & CIO
• Provision of on-call services as part of a team roster (calls are rare one per year)

Key requirements:

• Excellent verbal and written communication skills.
• At least 8 years Java experience, enterprise design patterns, JPA, Hibernate ORM, JEE an advantage, reactive programming an advantage.
• Java Web service development, SOAP and REST APIs, OpenAPI/XSD Schemas, XML/JSON, Spring/SpringBoot.
• Unix/Linux, Bash.
• Maven lifecycle management, Continuous Integration, Unit and System Integration testing.
• Major database experience, including data modelling, stored procedures. Oracle preferred.
• Willingness to be 24x7 on-call. Historically calls escalated to the dev team between 10pm and 6am are rare one per year.
• AWS development (EC2, Lambdas, API Gateway, S3/SQS, Cloud Formation).

Essential criteria

1. Programming/software development: Level 6 (SFIA) - Develops organisational policies, standards, and guidelines for software construction and refactoring. Plans and leads software construction activities for strategic, large and complex development projects. Adapts or develops new methods and organisational capabilities and drives adoption of, and adherence to policies and standards.