Application Support Engineer | Linux

Leidos; City of Melbourne; On-site; AUD 90,000 - 120,000; Full time

Job summary

Leidos Australia is seeking an Application Support Engineer to join a collaborative, Linux-focused team. You will work across the full application lifecycle to support and improve critical Linux-based applications, owning incidents end-to-end and applying proactive monitoring to drive reliability.

Applicants should be Australian citizens with an active NV‑1 AGSVA security clearance (or above) and be ready to build a long‑term career in modern application support and observability within

Qualifications

• Hands-on experience troubleshooting and resolving application issues in a production environment.
• Experience supporting applications on Linux/Unix systems, or strong foundational knowledge with a desire to work in Linux environments every day.
• Understanding of networks, protocols, and diagnostic tools used in application support.
• Ability to use scripting or automation to improve operational efficiency.

Responsibilities

• Provide Level 2/3 application and systems support in a Linux/Unix environment with a focus on proactive monitoring and performance management.
• Own incidents end-to-end from triage to resolution and post-incident review.
• Deploy software updates, patches and fixes per change management practices.
• Collaborate across development and support lifecycles to improve reliability and observability.

Skills

Linux

Troubleshooting

Networking

Scripting

Job description

Life Days are the Leidos way of recognising that we all need extra time to take care of life. By working slightly more than the minimum weekly hours (2 hours per week for full-timers), you can accrue up to 12 days of leave per year.

• Life Days are the Leidos way of recognising that we all need extra time to take care of life. By working slightly more than the minimum weekly hours (2 hours per week for full-timers), you can accrue up to 12 days of leave per year.
• Due to the nature of the role, you must be an Australian Citizen and hold an active NV-1 AGSVA security clearance (or above).

Our team feel Leidos is a great place to work. Learn more about our culture and benefits by visiting us here https://www.leidos.com/company/global/australia/careers

Do Work That Matters

Leidos Australia delivers IT and airborne solutions that protect and advance the Australian way of life. Our 2000 local experts, backed by our global experience and network of partners, are working to solve the world’s toughest challenges in government, intelligence, defence, aviation, border protection and health markets.

Your New Role and Responsibilities

Leidos Australia supports the integration of intelligence and situational awareness capabilities through the JP2096 Intelligence, Surveillance and Reconnaissance (ISR) system. This work enables Defence analysts to rapidly search, collate and assimilate data from multiple sources, supporting more timely and informed decision‑making in complex operational environments.

As an Application Support Engineer, you’ll join a collaborative, technically curious team supporting and improving critical applications in a Linux-based environment.

This role is well suited to someone who already has foundational technical skills and wants to use them every day, deepen their capability, and build a long-term career in modern application support and observability.

You’ll work across the full application lifecycle alongside developers, engineers, and stakeholders, contributing meaningfully from day one while continuing to grow your technical and professional skill set.

In this role, you’ll be actively involved in the day‑to‑day health, performance, and improvement of applications, including:

• Providing Level 2/3 application and systems support in a Linux/Unix environment, with a strong focus on proactive monitoring and performance management.
• Owning incidents end-to-end, from triage and investigation through to resolution and post‑incident review.
• Performing root cause analysis of application and system issues, working closely with other ITSM service towers, developers, and end users to implement sustainable fixes.
• Deploying software updates, patches, and fixes in line with approved change, release, and configuration management practices.
• Working across the development and support lifecycle, collaborating with others to improve reliability, visibility, and supportability of applications.
• Creating and maintaining clear operational and technical documentation to support ongoing operations and enable Level 1 Service Desk teams.

What You’ll Get Out of the Role

This is a role designed for engineers who want to grow, not stagnate.

You can expect:

• Structured learning and development, including project-supported training such as:
• ITIL Foundations v5
• Elastic Search / Observability Engineering
• Dedicated learning time during work hours, actively encouraged and supported by the Team Lead.
• Exposure to modern tooling and open-source technologies, with the opportunity to apply what you learn directly to real systems.
• The ability to make meaningful contributions while your security clearance is in progress, rather than waiting on the sidelines.
• Experience working in a team that values collaboration, knowledge sharing, and continuous improvement.
• Career‑building exposure across application support, incident management, observability, and platform operations — skills that remain highly relevant across the industry.
• A supportive team environment where development is recognised as part of your job, not something you do in your own time.

What You’ll Bring to Make an Impact

You don’t need to know everything on day one, but you will bring a solid technical foundation and a strong desire to continue learning.

Key requirements include:

• Hands‑on experience troubleshooting and resolving application issues in a production environment.
• Experience supporting applications on Linux/Unix systems, or strong foundational knowledge with a desire to work in Linux environments every day.
• Understanding of networks, protocols, and diagnostic tools used in application support.
• Ability to use scripting or automation to improve operational efficiency and reduce manual effort.
• A working understanding of how applications are built, deployed, supported, and improved across their lifecycle.
• Strong communication skills and a collaborative mindset, with the ability to work effectively across technical and non‑technical teams.

Don’t worry if you don’t tick all the boxes – if you meet most of them, we encourage you to submit your application. We’re most interested in your strengths, what you want to learn and how far you want to go.

Diverse Team Members, Shared Values and a Common Purpose

Providing our customers with smarter solutions takes an incredible team with diversity of thought, experience and perspectives driving innovation. Inclusion is at the heart of our culture and is one of our core values. It’s about creating a workplace where everyone can do important work, feels welcome, valued, and respected, and has equal access to opportunities to thrive. Paul Chase – Chief Executive, Leidos Australia.

Leidos Australia is an equal opportunities organisation and is committed to creating a truly inclusive workplace. We welcome and encourage applications from Aboriginal and Torres Strait Islanders, culturally and linguistically diverse people, people with disabilities, veterans, neurodiverse people, and people of all genders, sexualities, and age groups.

Our five Advocacy Groups (Women and Allies Network, Young Professionals, Defence & Emergency Services, Action for Accessibility and Abilities and Pride+) provide an opportunity for team members to connect and collaborate on shared interests, and work to support and celebrate our diverse community.

We are committed to making our recruitment process accessible to all candidates. Please get in touch with our Careers team [e-mail] if you’d like to discuss any additional support during your application or throughout the recruitment process.

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.

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.

Application Support Engineer | Linux • Melbourne, VIC, AU