Middleware Engineer

Job 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 professional 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. We deliver secure, resilient and innovative technology services that enable Defence enterprise and warfighting capabilities across multiple classified domains and networks. We provide world-class ICT operations and agile digital modernisation using advanced analytics, automation, hybrid cloud, DevSecOps, Infrastructure as Code, cybersecurity and AI to optimise highly complex, mission-critical environments. The Opportunity We are seeking a Senior Middleware Engineer to implement, manage and optimise enterprise middleware platforms that enable reliable integration and communication between applications, databases, services and external systems. This role provides senior technical expertise across middleware infrastructure, application integration, APIs, messaging, web services, automation, security, performance and high availability. Working closely with application developers, integration engineers, database teams, infrastructure teams, architects, cybersecurity and business stakeholders, you will help deliver secure, resilient and scalable middleware services that support critical business outcomes. Key Responsibilities • Implement, configure, maintain and optimise enterprise middleware platforms, including application servers, integration platforms, API gateways, messaging technologies and related services. • Design, support and improve secure application integration solutions using APIs, web services, messaging platforms, event-driven architectures and service interfaces. • Lead complex troubleshooting, root cause analysis, performance tuning, upgrades, migrations, disaster recovery activities and platform modernisation initiatives. • Develop and maintain automation, CI/CD pipelines, monitoring solutions, operational processes and infrastructure-as-code practices to improve service reliability and efficiency. • Partner with application, infrastructure, architecture, cybersecurity and business teams to deliver integration outcomes, provide technical leadership and mentor engineers in middleware best practices. About You We are looking for someone who brings judgement, curiosity and a collaborative approach to work that matters. Skills & Experience • Significant experience in middleware engineering, integration engineering, application infrastructure or a related discipline, with strong knowledge of enterprise middleware platforms such as Oracle WebLogic, IBM WebSphere, JBoss/WildFly, Tomcat or equivalent. • Demonstrated experience with APIs, REST, SOAP, XML, JSON, web services, messaging technologies and integration patterns, including platforms such as IBM MQ, Kafka, RabbitMQ or ActiveMQ. • Strong knowledge of Linux/Unix environments, networking concepts, security controls, troubleshooting, performance management, monitoring, automation and operational support. • Experience supporting cloud or hybrid environments, container technologies, Infrastructure as Code, CI/CD pipelines and DevOps or DevSecOps practices. • Excellent stakeholder engagement, technical leadership and communication skills, with the ability to lead investigations, mentor engineers and communicate technical risks and recommendations effectively. This role requires the successful applicant to be an Australian citizen and hold, or be eligible to obtain, NV-1 security clearance. If this role interests you, we encourage you to apply. We value different experiences and are interested in the capability and potential you could bring. What to Expect When You Apply Our hiring process is designed to be straightforward, respectful and easy to navigate. If your skills, experience and qualifications look aligned with the role, our Talent Acquisition team will contact you to discuss the next stage. You can expect: • An initial conversation with our Talent Acquisition team • An interview with the hiring manager or interview panel We’ll let you know what to expect before each stage, including who you’ll meet and ho