Senior Middleware Engineer

About the role

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 a range of middleware capabilities, including Oracle Fusion Middleware, IBM Integration Bus, IBM WebSphere Application Server, Cleo Managed File Transfer, IBM Sterling and Informatica B2B, and works closely with application, database, infrastructure, cybersecurity and other teams.

Key responsibilities

• Implement, operate, maintain and improve middleware, application-hosting, integration, managed file-transfer and B2B services on platforms such as Oracle Fusion Middleware, IBM Integration Bus or App Connect Enterprise, IBM WebSphere, Cleo, IBM Sterling and Informatica B2B.
• Lead middleware lifecycle and sustainment activities: installation, configuration, patching, upgrades, migrations, certificate and licence management, vulnerability remediation, performance and capacity optimisation, and end-of-support planning.
• Work with application, database, infrastructure, OS, network, storage, backup and cybersecurity teams to manage dependencies, deployments, interfaces, service accounts, data sources, connectivity and secure integration paths.
• Maintain managed file-transfer and B2B services, monitor message and transaction flows, investigate failed or delayed transactions, manage partner connectivity and contribute to availability, resilience, backup and recovery.
• Improve supportability through automation, monitoring and observability, lead root-cause analysis, contribute to technical reviews and keep accurate documentation of platforms, interfaces, certificates and operations.

Required profile

• Experience implementing, administering, maintaining or supporting enterprise middleware, integration, managed file-transfer or B2B platforms, with the ability to build capability across adjacent technologies.
• Understanding of enterprise integration concepts: messaging, routing, transformation, orchestration, APIs, adapters, queues, synchronous/asynchronous processing, secure protocols (SFTP, FTPS, HTTPS, AS2) and B2B partner integration.
• Knowledge of enterprise Java application hosting, middleware lifecycle and security, including clustering, JVM configuration, certificates, encryption, secrets management, audit logging and patching.
• Understanding of middleware dependencies across databases, Windows Server or RHEL, compute, storage, networking, load balancing, DNS, backup, identity, monitoring and security, with experience in Azure, AWS, VMware, private cloud or hybrid environments.
• Experience with scripting or automation tools such as PowerShell, Bash, Python, Jython, Ansible or Terraform, and structured monitoring and troubleshooting.
• Australian citizenship, holding and able to maintain an NV-1 security clearance; the role may be subject to ITAR requirements.

What we offer

• Flexible arrangements including Life Days (up to 12 extra days off per year), part-time, job sharing and compressed hours.
• Free access to Headspace and MeQuilibrium, plus wellness spaces.
• Over 120,000 on-demand courses and technical, project management, leadership and professional development opportunities.