Senior DevSecOps Engineer

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.

Mission Software Systems (MSS) brings together expertise across intelligence, software, and cloud to deliver end-to-end capability supporting the full intelligence lifecycle, from planning through to dissemination and feedback. The team fosters a culture of innovation, leveraging modern engineering practices and shared infrastructure to rapidly build, test, and deploy software solutions across a range of environments, including cloud. MSS also plays a key role in advancing technology modernisation within Government, delivering scalable and adaptable solutions for complex enterprise challenges.

The Opportunity

As a Senior DevSecOps Engineer, you will play a key role in enhancing and securing the delivery of mission-critical Defence capabilities. Working within a highly collaborative Agile environment, you will help shape the DevSecOps strategy, modernise delivery pipelines, and ensure security is embedded throughout the software development lifecycle.

• Lead the design, implementation and continuous improvement of secure CI/CD pipelines, automation frameworks and cloud-native DevSecOps practices across complex Defence programs.

• Champion security-by-design principles by integrating vulnerability management, compliance controls, threat detection and security tooling throughout the development and deployment lifecycle.

• Collaborate with software engineers, system engineers, architects and customer stakeholders to deliver scalable, resilient and secure solutions within an Agile delivery environment.

• Drive platform optimisation, infrastructure as code adoption, monitoring and operational excellence while mentoring team members and promoting DevSecOps best practices across the broader engineering community.

About You

You are a DevSecOps professional who enjoys solving complex technical challenges and enabling teams to deliver secure, reliable and high-performing systems. You bring a collaborative mindset, a passion for automation and a commitment to continuous improvement in both engineering and security practices.

Essential for this role:

• Experience designing, implementing and supporting secure CI/CD pipelines using tools such as Jenkins, GitLab CI/CD or Azure DevOps.

• Experience with infrastructure as code and automation practices using technologies including Terraform, Ansible and scripting languages such as Python, Bash or PowerShell.

• Knowledge of DevSecOps principles, secure software development practices, vulnerability management and security tooling across the software delivery lifecycle.

• Experience working with containerisation and orchestration technologies such as Docker and Kubernetes within cloud and hybrid environments.

• Experience supporting Linux-based enterprise platforms and delivering secure, scalable and highly available solutions.

• Ability to collaborate effectively within Agile teams, providing technical leadership, mentoring and continuous improvement across engineering and security practices.

Advantageous, but not essential:

• Experience supporting Defence, National Security or other regulated environments.

• Knowledge of security frameworks, accreditation processes and compliance requirements within government or Defence programs.

• Experience with monitoring, observability and logging platforms such as ELK, Splunk, Grafana or Prometheus.

• Relevant industry certifications such as Terraform Associate, AWS/Azure certifications, Kubernetes certifications, CISSP, SSCP or similar.

• Experience mentoring engineers and contributing to engineering capability uplift initiatives.

This role does require the successful applicant to be an Australian Citizen and hold an NV-1 security clearance but be willing and able to uplift to an NV-2 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

• Any role-specific assessment, technical discussion or customer step required for the position

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 Praveena Sundarakumar, Talent Acquisition.

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.