2 Principle Java/ Bespoke Software Engineer- BASELINE

Principal Java / Bespoke Software Engineer – Federal Government

2 Contract Positions | Federal Government
12-month contract + 2 x 12-month extensions
Canberra, ACT | Hybrid working arrangements
Baseline security clearance eligibility required
Estimated start: 1 September 2026

We are seeking two Principal Java / Bespoke Software Engineers to join a major Federal Government agency supporting a nationally significant, life-critical operational application.

The platform supports the coordination of critical Australian maritime and aviation response activities and integrates with a range of internal systems, external agencies and operational partners.

This is an outstanding opportunity for highly experienced Java engineers to work on a complex, bespoke enterprise environment that directly supports essential government services and emergency response capabilities.

The Opportunity
You will work within a small and highly skilled team of experienced Java and .NET developers and subject matter experts.

The broader application environment incorporates:

Java, Java EE, JMS, Spring Boot, AWS, Oracle PL/SQL, ReactJS, .NET and ArcGIS.

This position will primarily focus on supporting, maintaining and developing the platform’s Java, AWS, Oracle and enterprise integration components.

Operating at a Principal Engineer, EL2-equivalent and SFIA Level 6, you will provide technical leadership, lead complex software development activities and drive the adoption of robust software engineering practices and standards.

Key Responsibilities

- Design and develop secure, robust and maintainable enterprise software using Java and Oracle technologies
- Lead software construction, refactoring and technical improvement activities across a complex bespoke application
- Develop and maintain Java back-end components using Java EE, JMS, JPA, Hibernate and Spring Boot
- Design and implement REST APIs, SOAP web services and external system integrations
- Create and maintain OpenAPI specifications, WSDLs, XML schemas, XSDs, XML and JSON interfaces
- Develop AWS-based applications and integrations using EC2, Lambda, API Gateway, S3, SQS and CloudFormation
- Design logical and physical data models and implement solutions using Oracle Database and PL/SQL
- Implement database CRUD functionality using Java object-relational mapping frameworks
- Develop and maintain web-based user interfaces using ReactJS, HTML and CSS
- Develop and maintain automated unit, integration and system testing
- Build and enhance CI/CD and DevOps workflows using Jenkins, Git, Maven and Ant




- Prepare and execute application builds and software releases in accordance with established processes
- Produce detailed technical specifications, solution designs, process documentation and support artefacts
- Provide senior technical advice to executive stakeholders, application leadership and technology teams
- Develop and promote software engineering policies, standards and technical guidelines
- Review solution designs and provide technical guidance and feedback to other developers
- Participate in a rotating after-hours on-call support roster for critical production incidents

Essential Experience To be successful, you will demonstrate:

- A minimum of eight years’ commercial Java software development experience
- Extensive experience developing complex, enterprise-grade and bespoke software solutions
- Strong knowledge of enterprise design patterns, Java EE/JEE, JPA and Hibernate ORM
- Strong development experience using Spring and Spring Boot
- Experience developing SOAP and REST APIs, Java web services and enterprise integration solutions
- Experience working with OpenAPI, WSDL, XML, XSD schemas and JSON
- Strong database development experience, including:
- Data modelling
- Physical database design
- Stored procedures
- Complex SQL
- Oracle Database and PL/SQL

- Practical AWS development experience using services such as:

- EC2
- Lambda
- API Gateway
- S3
- SQS
- CloudFormation

- Robust experience with Unix/Linux environments and Bash scripting
- Experience with Maven lifecycle management, Jenkins, Git, Ant and continuous integration
- Experience implementing automated unit, integration and system testing
- A strong commitment to software engineering quality, maintainability, documentation and development standards
- Demonstrated experience leading software construction and refactoring activities across large or complex projects
- Excellent written and verbal communication skills
- The ability to communicate complex technical information to executives, technical teams and business stakeholders

Experience with reactive programming, ReactJS, ArcGIS, JMS message processing, highly available applications or life-critical operational systems will be highly regarded.

Principal-Level Expectations




This position is aligned to SFIA Programming/Software Development Level 6.

The successful candidate will be expected to:

- Plan and lead software construction activities for strategic, large and complex development initiatives
- Establish and improve software engineering policies, standards and development guidelines
- Develop or adapt engineering methods and organisational capabilities
- Drive adherence to agreed technical standards and development practices
- Provide authoritative advice on software engineering, solution design and application support
- Mentor developers and contribute to senior technical decision‑making
- Identify opportunities to improve software quality, maintainability, resilience and delivery processes

On‑call Requirement The application supports critical operational services, and successful candidates must be willing to participate in a 24/7 rotating on‑call roster.

The roster is shared across the development and support team and is structured to accommodate planned leave and availability.

After‑hours escalations to the development team have historically been rare.

However, when rostered on call, you will be responsible for responding to and assisting with critical break‑fix incidents.

Contract Details

- Positions available: 2
- Client: Federal Government
- Initial contract: 12 months
- Extension options: 2 x 12 months
- Estimated commencement: 1 September 2026
- Location: Canberra, ACT
- Working arrangements: Hybrid, with regular work-from-home arrangements available
- Hours: Up to 40 hours per week
- Security clearance: Must be able to obtain and maintain an Australian Government Baseline security clearance

Candidates will generally need to be Australian citizens to satisfy Australian Government security clearance requirements.

Application Requirements

Applicants must provide:

- An updated resume clearly outlining relevant Java, AWS, Oracle and enterprise software engineering experience
- A one-page pitch of up to 5,000 characters addressing the essential criteria and demonstrating capability at SFIA Level 6

Your pitch should include specific examples of:

- Leading complex enterprise Java development
- Establishing or improving software engineering standards
- Designing APIs and enterprise integration solutions
- Developing AWS and Oracle-based applications
- Delivering robust and maintainable software within critical or highly available environments

Additional information

- 12-month contract + 2 x 12-month extensions
- Canberra, ACT | Hybrid working arrangements
- Baseline security clearance eligibility required

#J-18808-Ljbffr

📌 2 Principle Java/ Bespoke Software Engineer- BASELINE (Canberra)
🏢 Infinity Pro
📍 Canberra