Description

About Leidos Australia

At Leidos Australia, our work goes beyond a job title. We design, build, operate and support the systems, services and capabilities that help protect and advance the Australian way of life.

Backed by a global organisation of more than 40,000 people, our Australian team of around 2,000 has partnered with government, defence and national security customers for more than 30 years. We deliver mission-critical solutions where reliability, trust and purpose matter.

Leidos is a destination for people who want their work to have purpose, their contribution to be recognised, and their career to grow without needing to fit a single mould. Meaningful work is supported by benefits, flexibility and career pathways that help you grow while balancing life outside work. This includes:

- Flex Your Way – Tailor work to your life with options including Life Days (up to 12 extra days off per year), part-time arrangements, job sharing, and compressed hours.
- Wellbeing That Matters – Free access to Headspace and MeQuilibrium, plus dedicated wellness spaces to support your mental, physical, and emotional wellbeing.
- Learn Without Limits – Access over 120,000 on-demand courses, alongside technical, project management, leadership, and career development opportunities.
- Work That Makes an Impact – Contribute to nationally significant projects that matter, solve complex challenges, and accelerate your career through unique growth opportunities.
- Build Your Future – Whether you're deepening technical expertise or preparing for leadership, we'll invest in your development every step of the way.
- And Much More – These are just a few of the ways we invest in our people and help them thrive.

About the Team





You’ll join a team where people work with integrity, inclusion, innovation, agility, collaboration and commitment. In practice, that means sharing ownership, solving complex problems together and staying connected to the customer context, the purpose behind the work and how each role contributes to meaningful outcomes.

The Civil Digital Modernisation business delivers IT services to Australian Federal and State Government departments and agencies to accelerate digital modernisation and ensure secure, resilient, and adaptive environments that meet evolving regulatory, compliance and business needs. Our approach integrates advancing data, AI, cloud, and automation delivering agility, security, efficiency, and innovation at scale.

The Opportunity

The Senior Middleware Engineer is responsible for the implementation, operation, sustainment, and continuous improvement of enterprise middleware and integration platforms supporting critical customer services.

The role maintains and supports a range of middleware capabilities, which may include Oracle Fusion Middleware, IBM Integration Bus, IBM WebSphere Application Server, Cleo Managed File Transfer, IBM Sterling, and Informatica B2B.



The role is not expected to be an expert in every product but should demonstrate experience across relevant enterprise integration technologies and the ability to develop capability in adjacent platforms.

The Senior Middleware Engineer leads middleware lifecycle activities, including installation, configuration, integration, patching, upgrades, certificate management, vulnerability remediation, monitoring, performance optimisation, migration, and end-of-support planning.

The role works closely with application, database, infrastructure, operating system, network, cybersecurity, architecture, service-management, vendor, and business teams to provide secure, reliable, supportable, and integrated services to the customer.

- Implement, operate, maintain and improve enterprise middleware, application-hosting, integration, managed file-transfer and B2B services across platforms such as Oracle Fusion Middleware, IBM Integration Bus or App Connect Enterprise, IBM WebSphere Application Server, Cleo, IBM Sterling and Informatica B2B.
- Lead middleware lifecycle and sustainment activities including platform implementation, configuration, patching, upgrades, migrations, certificate renewal, licence management, vulnerability remediation, performance optimisation, capacity management and end-of-support planning.
- Work collaboratively across application, database, infrastructure, operating system, network, storage, backup and cybersecurity teams to manage dependencies, application deployments, interfaces, service accounts, data sources, connectivity, certificates and secure integration paths.
- Support reliable end-to-end transactions and integrations by maintaining managed file-transfer and B2B services, monitoring message and transaction flows, investigating failed or delayed transactions, managing partn

📌 Middleware Engineer (Melbourne)
🏢 Leidos
📍 Melbourne