Profectus is seeking an experienced Senior WebSphere Software Engineer to support enterprise middleware and Java application development within an Australian Government agency. You will develop, build, release and support midrange Java applications in IBM WebSphere on RHEL and Windows, alongside .NET web components and integration services. The work covers application development, middleware migration and refactoring, release and deployment, and technical leadership of a development team.
Key Responsibilities
Develop, build, operate, monitor and release enterprise midrange Java applications in IBM WebSphere on RHEL and Windows
Migrate and refactor legacy middleware code and applications to modernised server and network architectures
Implement and support file transfer, messaging, web service and API solutions for middleware components
Build ASP.NET MVC and Web API solutions for web-based components
Work with relational databases including SQL Server and IBM DB2, and infrastructure such as firewalls, LDAP/AD, Entra ID and gateways
Lead software development activities and provide technical direction to a team of developers
Plan and manage release packages, including risk assessment, scheduling, rollback planning and post-release reviews
Design complex software components and systems, and lead design reviews
Optimise application performance, troubleshoot production issues and apply bug fixes
Lead code reviews and apply secure, testable and scalable development practices
Collaborate with business analysts, testers and other developers to deliver software on secure platforms
Required Experience




Senior-level experience developing and supporting enterprise Java applications on IBM WebSphere
Experience deploying and operating applications on both RHEL and Windows servers
Experience migrating or refactoring legacy middleware to up-to-date architectures
Experience delivering file transfer, messaging, web service and API integrations
Development experience with ASP.NET MVC and Web API
Experience with SQL Server and IBM DB2
Experience leading release and deployment activities, including continuous integration and automated build pipelines
Experience leading development teams, setting coding standards and reviewing the work of others
Experience selecting testing approaches and implementing automated testing
Experience with SmartIQ/Infiniti
Experience with Drupal or GovCMS
Experience integrating Elastic, Kibana and Prometheus for monitoring
Experience with configuration management tools and processes
Experience producing technology roadmaps or assessing emerging technologies
Previous experience in Australian Government environments
Security Clearance Requirements
Must be an Australian Citizen
Must have an AGSVA NV1 Security Clearance
Working Arrangements
Onsite initially, then hybrid
Why Profectus
Profectus partners with Australian Government agencies to deliver trusted ICT capability across complex delivery programs. We take a long term, relationship driven approach, supporting our people across the full lifecycle of their engagement while contributing to outcomes of national importance.
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📌 Senior Software Engineer (Canberra)
🏢 Profectus
📍 Canberra