Application Support Engineer | Linux

Leidos LLC; City of Melbourne; On-site; AUD 90,000 - 130,000; Full time

Benefits offered by this job

Health and Wellness programs

Paid Leave

Retirement plan

Job summary

Leidos Australia is seeking an Application Support Engineer to join a Linux-based environment, supporting critical applications and driving observability improvements. You will work with developers, engineers and stakeholders to grow technically and professionally while ensuring reliable operation of key systems.

The role offers structured learning, exposure to modern tooling, and opportunities to contribute even while security clearances are in progress, in a collaborative team focused on

Qualifications

• Hands-on experience troubleshooting and resolving application issues in production.
• Experience supporting applications on Linux/Unix systems.
• Understanding of networks, protocols, and diagnostic tools used in application support.
• Ability to use scripting or automation to improve operational efficiency.
• Working understanding of how applications are built, deployed, supported, and improved across their lifecycle.
• Strong communication skills and a collaborative mindset.

Responsibilities

• Provide Level 2/3 application and systems support in a Linux/Unix environment with proactive monitoring.
• Own incidents end-to-end from triage to resolution and post-incident reviews.
• Perform root cause analysis with ITSM teams and developers to implement fixes.
• Deploy software updates, patches, and fixes per change and release practices.
• Collaborate across development and support lifecycles to improve reliability and observability.
• Create and maintain clear documentation to support operations.

Skills

Linux/Unix

Networking basics

Scripting

Observability

Tools

ELK Stack

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. 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 Level1 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: 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.

Original Posting: For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

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.

Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Pay and Benefits

Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

Securing Your Data

Leidos will never ask you to provide payment‑related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment‑related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.