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.

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 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 the development and execution of application upgrade, patching, maintenance, and lifecycle plans. You’ll work closely with database subject matter experts, infrastructure teams, cloud engineers, cybersecurity specialists, architects, vendors, service-management teams, and business stakeholders to deliver secure, reliable, supportable, and cost-effective application services.

The role provides technical leadership across the complete application lifecycle, including deployment, configuration, integration, monitoring, incident resolution, vulnerability remediation, capacity planning, disaster recovery, vendor support, and end-of-life management.

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

About You

We are looking for someone who brings judgement, curiosity and a collaborative approach to work that matters.

• You have experience managing enterprise COTS applications throughout implementation, operation, upgrades, maintenance and retirement, with the capability to lead complex technical activities and coordinate multidisciplinary teams.
• You bring practical hybrid-cloud experience across private cloud, Microsoft Azure, Amazon Web Services, VMware-based environments or comparable enterprise platforms, together with experience supporting Microsoft Windows Server, Linux and enterprise database technologies such as Microsoft SQL Server, Oracle Database or PostgreSQL.
• You understand enterprise application dependencies including web servers, middleware, APIs, certificates, identity services, service accounts, messaging, storage, networking, DNS and load balancing, and take a structured approach to troubleshooting application, database, infrastructure, integration and performance issues.
• You have experience with automation and deployment technologies such as PowerShell, Python, Bash, Ansible, Terraform, Azure DevOps or Git, complemented by an understanding of monitoring, vulnerability management, identity and access management, secure configuration and IT service-management practices.
• You communicate technical information clearly, collaborate inclusively across technical, vendor and business teams, manage competing operational and lifecycle priorities, and produce accurate technical plans, procedures, risk assessments, implementation records and support documentation.

This role requires the successful applicant to be an Australian citizen, hold and be able to maintain a 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.

Certain roles may be subject International Traffic in Arms Regulations (ITAR) requirements which may limit persons who hold dual nationality with certain proscribed countries from accessing material, or in the case of dual Australian-U.S citizens, may require the candidate to obtain a U.S. Persons Abroad authorisation from the U.S DDTC.

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 how to prepare. If you need any adjustments or support during the process, please let us know.

Ready to explore what’s possible?

If this sounds like a role where you can make an impact and continue to grow, we’d like to hear from you. Please apply via the “Apply Now” button with your resume. If you have any questions about the role or recruitment process, please contact careers.au@au.leidos.com.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

Pay Range:

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.