Senior Platform Engineer, Application Management

About the role

Leidos Australia's Civil Digital Modernisation business delivers IT services to Australian Federal and State Government departments and agencies. The Senior Platform Engineer, Application Management is responsible for the technical management, maintenance and continuous improvement of Commercial Off-the-Shelf (COTS) applications hosted across private cloud, public cloud and hybrid environments. The role leads application upgrade, patching, maintenance and lifecycle plans, working with database experts, infrastructure teams, cloud engineers, cybersecurity specialists, architects, vendors and business stakeholders.

Key responsibilities

• Own and coordinate the lifecycle of enterprise COTS applications, including installation, configuration, upgrades, patching, maintenance, migration and retirement, and develop upgrade, test, implementation, outage and rollback plans.
• Coordinate application services across database, operating system, middleware, network, storage, identity, backup, cloud and cybersecurity teams, supporting private cloud, Microsoft Azure, Amazon Web Services and hybrid environments.
• Provide technical leadership across release and change management, incident investigation, root-cause analysis, capacity and performance management, disaster recovery and service continuity.
• Strengthen application security, reliability and efficiency through vulnerability remediation, secure access, monitoring, observability and automation.
• Work with vendors and stakeholders on dependencies, support cases, product roadmaps and end-of-support risks, and maintain architecture artefacts, runbooks, recovery instructions and support documentation.

Required profile

• Experience managing enterprise COTS applications through implementation, operation, upgrades, maintenance and retirement, leading complex technical activities and coordinating multidisciplinary teams.
• Practical hybrid-cloud experience across private cloud, Microsoft Azure, Amazon Web Services, VMware-based environments or comparable platforms, plus support for Microsoft Windows Server, Linux and databases such as Microsoft SQL Server, Oracle Database or PostgreSQL.
• Understanding of application dependencies (web servers, middleware, APIs, identity, storage, networking, DNS, load balancing) and a structured approach to troubleshooting.
• Experience with automation and deployment tools, monitoring, vulnerability management, identity and access management, secure configuration and IT service management.
• Clear communication, collaboration across technical, vendor and business teams, and ability to manage competing priorities.
• Australian citizenship, holding and able to maintain an NV-1 security clearance; the role may also be subject to ITAR requirements.

Required skills

• PowerShell, Python, Bash, Ansible, Terraform, Azure DevOps or Git
• Monitoring, vulnerability management, identity and access management, secure configuration and IT service management

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 professional development opportunities

The hiring process starts with a conversation with the Talent Acquisition team, followed by an interview with the hiring manager or panel. Applications are made through the Apply Now button on the listing.