6 System Admin jobs in Australia

Overview SOSi seeks a Network Administrator to join our team at Canberra, AUS. As a Network Administrator, you'll play a vital role in maintaining and supporting network operation, maintenance, and security, ensuring DoD compliance. Our team, based in Honolulu, Hawaii, creates, manages, and supports IT solutions for USINDOPACOM, its mission, and its 5,000+ customers throughout the Pacific theater. We tackle challenging technical problems critical to enabling USINDOPACOM's realization of time sensitive C2 strategies. Essential Job Duties As a Network Administrator at SOSi, you will work within the Network Operations team to provide essential support within the USINDOPACOM Area-of-Responsibility (AOR). Your role includes monitoring, maintaining, and ensuring network availability, all while adhering to DoD regulations. You will be responsible for managing various network components, including LAN, BAN, WAN, telecommunications/transport protocols, Unified Communications/VoIP/Video Teleconferencing (VTC), WAN accelerators, load-balancers, firewalls, and cryptographic devices. Configures and maintains Cisco routers, switches, Adaptive Security Appliances (ASAs), Taclane encryption devices, and Cisco Voice over IP (VoIP) systems to support efficient data flow within the network, while following established Standard Operating Procedures (SOPs) and Tactics, Techniques, and Procedures (TTPs) when necessary. Supports and troubleshoots External Border Gateway Protocol (eBGP) routing within a Palo Alto environment. Implements and provides oversight of Commercial Solutions for Classified (CSfC) and Taclane encryption methods to protect sensitive data. Provides essential support in the maintenance of VDI environments, ensuring efficient and secure user access. Manages Cisco Unified Communications Manager (CUCM), Video Teleconferencing systems (VTC)s, and other Cisco VoIP systems to ensure reliable communication services. Reviews and troubleshoots network transport and protocol related issues. Collaborates with the Cross-Domain Solutions team to facilitate secure information sharing across security domains. Participates in project coordination alongside the project management team to ensure successful project execution. Liaises with POCs and customers to understand their network needs and assists in providing appropriate solutions. Diligently follows guidance and direction from the Network Operations Lead, Deputy, and Operations Manager, adhering to established standards and procedures for network administration. Participates in related solution technologies and special projects, as required. Minimum Requirements Active in-scope TOP SECRET clearance with SCI eligibility. DoD 8570 IAT-II compliant (CCNA-Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP) Bachelor's Degree in IT, Networking, or similar, and 4 years of related experience or 8+ years of experience in network administration, to obtain Cisco Certified Network Associate (CCNA) within 6 months. Strong knowledge in Cisco routers, switches, ASA, Palo Alto firewalls, CSfC, Taclane encryption methods, VDI environments, Cross-Domain Solutions, CUCM, and VTCs. Knowledge of network security best practices and compliance standards including government Secure Technical Implementation Guidelines (STIGs). Strong problem-solving skills and the ability to troubleshoot network issues. Ability to work in a fast-paced environment, adapt to changing network requirements, and effectively communicate with POCs and customers. Able to support 24/7 operations (including support to exercises), when necessary. Able to follow instructions and work both independently and in a (distributed) team environment. Preferred Qualifications Cisco Certified Network Associate (CCNA) certification. Relevant IT certifications, particularly related to Cisco and network security (e.g., Cisco, Palo Alto, ITIL). Familiarity with Department of Defense (DoD) protocols and procedures. Experience with virtual infrastructure, VDI/thin-client, and VoIP deployments. Knowledge of Forcepoint, Juniper, and other network technologies. Proficient in Help Desk and software applications (Jira, Service Now, Remedy). Awareness of Command and Control (C2) applications. Experience in ITIL framework and best practices (e.g., Change Management, Configuration Management, Incident Management, Capacity Planning) Customer-service oriented with a willingness to participate and assist. Work Environment Fast-paced and deadline-oriented work environment Potential for non-traditional working hours, including consecutive nights and weekends Occasional travel to locations within the supported Area-of-Responsibility (AOR) Working at SOSi All interested individuals will receive consideration and will not be discriminated against for any reason.
SOSi is an equal employment opportunity employer and affirmative action employer. All interested individuals will receive consideration and will not be discriminated against on the basis of race, color, religion, sex, national origin, disability, age, sexual orientation, gender identity, genetic information, or protected veteran status. SOSi takes affirmative action in support of its policy to advance diversity and inclusion of individuals who are minorities, women, protected veterans, and individuals with disabilities.

Title:
Network Administrator
Belong. Connect. Grow. with KBR!
KBR's National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country's most critical role - protecting our national security.
Why Join Us?
+ Innovative Projects: KBR's work is at the forefront of engineering, logistics, operations, science, program management, mission IT and cybersecurity solutions.
+ Collaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace.
+ Impactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of space defense.
This is a contingent position based upon contract award
Who We AreKBR Government Solutions delivers full life cycle professional and technical solutions that improve operational readiness and drive innovation. Our solutions help ensure mission success on land, air, sea, space and cyberspace for the Department of Defense, Intelligence Community, NASA and other federal agencies. KBR's areas of expertise include engineering, logistics, operations, science, program management, mission IT and cybersecurity. KBR strives to create a safer, more secure and sustainable world by bringing together the best and brightest to deliver technologies and solutions that help our customers accomplish their most critical missions and objectives.
The Mission AheadThis role is with KBR's Government Solutions U.S. division. At KBR Government Solutions, we don't just envision a world that's safer, more secure, and sustainable - we create it. Our legacy of delivering advanced full life cycle professional and technical solutions is matched only by our commitment to operational readiness and innovation. As stewards of critical missions for the Department of Defense, Intelligence Community, NASA, and other key federal entities, we excel in engineering, logistics, operations, science, program management, mission IT, and cybersecurity. United in our quest for excellence, KBR stands at the vanguard, ready to transform possibilities into impactful realities for a better tomorrow.
Who You AreYou're a resourceful and skilled Network Administrator with a passion for ensuring secure, reliable, and high-performing network infrastructure. With expertise in configuring, monitoring, and troubleshooting network systems, you excel at maintaining seamless connectivity across complex environments. Your knowledge of networking protocols, hardware, and software, combined with a proactive approach to problem-solving, makes you a critical contributor to operational success.
At KBR, you bring technical expertise, a commitment to excellence, and a focus on delivering innovative solutions that keep systems running efficiently. Known for your ability to diagnose and resolve network issues quickly, you thrive in fast-paced settings where adaptability and teamwork are key. Your dedication to security, optimization, and continuous improvement aligns with KBR's mission to deliver dependable and forward-thinking IT solutions.
What You'll DoIn the role of Network Administrator, your duties will include:
+ Maintain, install, upgrade and configure data systems.
+ Administer operating systems and maintain basic security and recovery procedures such as scheduling and backups.
+ Perform assignments requiring experience and knowledge of standard concepts within their field.
+ Display core job competencies by analyzing possible solutions using standard procedures while developing advanced skills.
+ Manage multiple IT vendors to ensure completion of IT projects in a timely manner.
+ Perform other duties as assigned.
Requirements:
+ Must be an Australian citizen
+ Must Possess an active AUS PV Clearance.
+ Minimum of an Associates degree in Computer Science or a related field required; Bachelor's degree is preferred.
+ Minimum of five years of directly related technical, professional experience required.
+ Requires knowledge and understanding of TCP/IP networking principals in a Microsoft Environment to include network topologies and transmission media
+ Possess a current Security+ Certification
+ Provides technical support for Microsoft Windows 2012/Win7 and Linux operating systems.
+ Familiarity with networking concepts, including TCP/IP, DNS, and VPN troubleshooting.
+ Experience with IT support tools, ticketing systems, and remote desktop applications.
+ Experience in an enterprise IT environment or supporting large-scale systems.
+ Excellent problem-solving and analytical skills.
+ Strong communication and interpersonal skills, with the ability to explain technical concepts to non-technical users.
+ Excellent analytical and organizational skills with the ability to plan and achieve a variety of tasks. Able to set priorities and deal with a number of issues and deadlines concurrently.
+ Ability to work independently and manage multiple tasks in a fast-paced environment.
+ Commitment to maintaining confidentiality and following security protocols.
Desired Qualifications:
+ Certifications in disciplines such as Cisco CCNA, CompTIA Network+ or Microsoft certifications in Windows Server and Windows Client.
This role will be located in Alice Springs. This position is expected to be onsite 100%.
#SF
Belong, Connect and Grow at KBRAt KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team of team's philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver - Together.
KBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.

Network/Systems Administrator
Job Category: Information Technology
Time Type: Full time
Minimum Clearance Required to Start: TS/SCI with Polygraph
Employee Type: Regular-Long Term Assignment
Percentage of Travel Required: Up to 10%
Type of Travel: Local
* * *
**The Opportunity:**
Looking for Network/Hardware technician with great communication skills that will be responsible for collection of incident information through customer conversation, and self-service support tools. Tracks incidents and requests from identification through resolution ensuring a quality end-to-end customer experience. Conducts initial assessment, triage, research, and resolution for basic incidents and requests regarding the use of application software products and/or infrastructure components. Communicates promptly on progress. Engages other service desk resources or appropriate service resources to resolve incidents that are beyond the scope of their ability or responsibility by routing incidents, as necessary, to product line, application, or system support specialists. Executes against established Service Level Agreements (SLA). Documents resolutions and updates self-help and staff knowledge bases. Alerts management to recurring problems and patterns of problems. Provide statistics for the weekly Service Desk report on call trends.
**Shift work in Australia!**
**Responsibilities:**
+ Provide Information Technology (IT) support through the performance of on-site product/solution installation, sustainment, and resolution.
+ Oversee and/or perform any necessary diagnoses, troubleshooting, service, and repair of IT equipment and systems.
+ Provide direct customer service touch labor for assessment, diagnosis, and resolution of identified issues.
+ Instruct customers in the operation and maintenance of the provided solution and interprets customers' needs, defines next steps, and clarifies the assignment of responsibility for problem resolution as needed. Includes any aspect of site/field support and is not limited to systems hardware, software, network, and other technical infrastructure components.
+ Collaborate directly with the TIER 1 provider as necessary.
+ Analyze, administer, maintain, and manage the performance of the overall suite of legacy equipment that includes but is not limited to voice, video, workstations, servers, networks, monitors, peripherals, software, and other related equipment.
+ Maintain all configuration documentation for assigned infrastructure.
+ Evaluate hardware in direct coordination with the TIER 1 provider, end users, stakeholders, and other Government personnel as appropriate.
+ Participate in the development and implementation of standards and procedures.
+ Maintain network security protocol and ensures compliance with security policies and procedures.
+ Participate and may lead aspects of installs, moves, changes, adds, and deletes (IMACDs) in coordination with stakeholders.
+ Interface with vendors as appropriate to ensure optimal resolution during problems, issues, outages, and/or periods of reduced performance.
+ Help to develop testing strategies and document results.
+ Provide advice and training to end-users.
+ Troubleshoot and resolve complex problems.
+ May provide work leadership to less-experienced personnel.
+ Maintain current knowledge of relevant hardware and software applications as assigned.
+ Participate in special projects as assigned.
**Qualifications:**
_Required:_
+ Active TS/SCI with Polygraph.
+ Must be able to obtain Security Plus certification within 90 days.
+ Lift 30-50 lbs on a repeated basis.
+ Ability to stand for long periods of time while working with Network Hardware.
+ Bachelor's Degree in the Information Technology (IT) field or related discipline, or the equivalent combination of education, technical certification, and/or training to include work experience.
+ 4-7 years of directly related experience in support to IT equipment (e.g., Hardware, Networks, etc.).
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**___**
**What You Can Expect:**
**A culture of integrity.**
At CACI, we place character and innovation at the center of everything we do. As a valued team member, you'll be part of a high-performing group dedicated to our customer's missions and driven by a higher purpose - to ensure the safety of our nation.
**An environment of trust.**
CACI values the unique contributions that every employee brings to our company and our customers - every day. You'll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.
**A focus on continuous growth.**
Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground - in your career and in our legacy.
**Your potential is limitless.** So is ours.
Learn more about CACI here. ( Range** : There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits. Learn more here ( .
The proposed salary range for this position is:
$64,700 - $135,700
_CACI is_ _an Equal Opportunity Employer._ _All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any_ _other protected characteristic._

Title:
System Administrator
Your KBR future - delivering solutions and changing the world
About KBR:
We are a company of innovators, thinkers, creators, explorers, volunteers and dreamers who all share one goal - to improve the world.
We deliver science, technology and engineering solutions to governments and companies around the world. KBR employs approximately 37,000 people worldwide with customers in more than 80 countries and operations in over 30 countries.
For 65 years, KBR and its heritage companies are proud to have delivered some of Australia's largest and most complex projects.
With around 2,000 employees in 6 primary offices throughout Australia, we are committed to social and environmental sustainability and delivering projects with a digital mindset driving innovation within our business and for our customers.
We help ensure mission success on land, in the air, at sea, in space and cyberspace for our defence customers.
From individual technologies and services to comprehensive project delivery and mission execution, no other company can match the breadth and depth of KBR.
KBR comprises a talented team who provide a broad spectrum of capabilities across Australia and the Asia Pacific. Our proven project teams readily address complex and multi-disciplinary activities, providing low-risk and cost-effective solutions to our customers.
Learn more about our business - Opportunity
The Systems Administrator is responsible for the support, maintenance, and ongoing improvement of client ICT Service Desk environments, ensuring high availability and performance across systems and services. Operating under the direction of the Service Desk Manager, this role provides technical support for incidents, service requests, and changes, and plays a key part in maintaining system health and stability for KBR clients.
The Systems Administrator will perform in-depth troubleshooting, escalate i ncidents as appropriate , and work collaboratively with other technical teams to resolve complex issues. This role requires a proactive approach to system monitoring, patching, and documentation, along with the ability to support scheduled changes and respond to incidents both during and outside of business hours , as required .
Responsibilities
The key responsibilities of the role will include, but are not limited to:
Service Operation s
+ Provide day-to-day administration and support of client systems, servers, and infrastructure .
+ Monitor system health, capacity , and performance using appropriate tools and dashboards .
+ Respond to and resolve escalated service requests and incidents in a timely matter and in accordance with SHIs .
+ Admini ster Service Desks across several government networks with varying sizes and classifications .
+ Ensure that service operations adhere to relevant SoWs, SHIs, and ITIL-based service management practices .
+ Participate in on-call and 24x7 support rosters , as required .
Incident & Problem Management
+ Conduct root cause analysis for re curring issues and develop preventative measures .
+ Escalate complex or unresolved issues to L3 , where necessary .
+ Maintain clear and detailed records of incidents, actions taken, and outcomes .
+ Support the Service Desk Manager in tracking ticket trends and recommending service improvement.
Maintenance & Continuous Improvement
+ Perform routine system maintenance, including patching, updates, backups, and health checks.
+ Ident ify and propose opportunities for automation or efficiency improvements within the environment.
+ Assist in onboarding new technologies or services in line with client needs and company strategy.
Collaboration & Documentation
+ Work collaboratively with support staff, providing guidance, mentoring, and knowledge transfer.
+ Maintain and update technical documentation, including procedures, system conf igurations, and knowledge base articles.
+ Liaise with other technical team s to coordinate support and delivery activities.
+ Participate in service reviews and/or technical meetings , as required .
Incident Response & Crisis Management
+ Act as a primary escalation point for Service Desk ICT incidents , working closely with internal teams and external partners to restore services quickly and effectively.
+ Participate in post-incident reviews to analyse root causes and implement preventive measures.
Qualifications, Skills and Experience
Essential:
+ Experience supporting Microsoft technologies such as Windows Server 2016/2019/202 2 .
+ Experience supporting virtuali s ation platforms ( eg. VMWare, Nutanix, Hyper- V) .
+ Working knowledge of network fundamentals ( eg. TCP/IP, VPN, firewalls, routing/switching) .
+ ITIL V3/4 Foundation Certification.
+ NV1 Security clearance (with the ability to upgrade to NV2) .
+ Ability to troubleshoot complex issues methodically and communicate findings clearly.
+ Strong documentation and organi s ational skills.
Desirable :
+ 2 + years' experience in a similar S ystems A dministration or IT support role.
+ Experience working with government ICT products, services and programs.
+ Experience working with Redhat technologies ( eg. RHEL 7/8/9)
+ Familiarity with monitoring platforms ( eg. Elastic , SCOM ) .
+ Experience working with backup and DR solutions ( eg. HYCU , DPM, Ve eam ) .
Soft Skills:
+ Clear verbal and written communication skills, par ticularly in documenting technical solutions.
+ Ability to work independently as well as part of a collaborative team.
+ Professionalism in client interactions, with a focus on customer service and support excellence.
+ Adaptability and willingness to continuously learn and develop technical skills.
Benefits of KBR
+ A workplace culture certified as a Great Place To Work (Aus, India, UK & US)
+ Flexible working conditions
+ Competitive salary (including annual reviews)
+ Paid Parental leave
+ Paid Reservist leave
+ Income protection
+ Corporate rewards
+ Salary packaging/Novated leasing
+ Discounted employee stock purchase plans
+ Flu shots, skin checks and private health insurance discounts
+ Career development: Online learning, mentorship and career pathways
If you're ready to shape tomorrow, let's get started. Apply Now!
KBR acknowledges the Traditional Custodians of Country throughout Australia and their continuing connections to land, sea, community and culture. We pay our respects to Elders past and present.
As a Major Service Provider of the Australian Defence Force, an AGSVA security clearance will be required and compliance to International Traffic in Arms Regulations (ITAR). As such, our hiring decisions are based on the key requirements of each role and candidates are selected based on their unique strengths and experiences.
#LI-JAW1

**Description**
The Multi-Domain Solutions Group at Leidos currently has an opening for Shift Tier 2 Hardware System Administrator for our Incident and Service Request Response Team to support a client's requirements in a challenging, dynamic setting located in the Alice Springs, AUS. The position requires an active TS/SCI with Polygraph security clearance and ability to pass US Government medical and psychological exams.
The Shift Tier 2 Hardware System Administrator receives and responds to service requests and problems reported by customers and escalated from Tier 1. The Tier 2 Hardware System Administrator will work in a highly collaborative environment with teammates, key stakeholders and the Government customer to ensure mission continuity and support to 24x7 operations.
**Primary Responsibilities:**
+ Communicate with customers and technical component's to fully understand the incident, service request or problem.
+ Research problems by accessing internal and external knowledge databases.
+ Perform hardware troubleshooting, repair, replacement and incident resolution.
+ Ensure performance meets established Performance Requirement Standards.
+ Facilitate technical communications between operations and development staff.
+ Distribute defect reports and system data collected during anomaly investigations.
+ Plan and coordinate maintenance activities, perform upgrades and support the transition and acceptance of new and modified systems.
+ Analyze customer problems and implement appropriate corrective action to initiate a repair, and return to service in the field.
+ Assist with property and asset management.
+ Monitor, review, update and disposition ServiceNow/HelpNow system tickets assigned to program per required Performance Requirements Standards and level of information details.
**Basic Qualifications:**
To be considered for this position, you must meet the knowledge, skills, and abilities listed below:
+ TS/SCI with Polygraph is required.
+ BA degree and 4-8 years of prior relevant experience, Masters with 2-6 years of prior relevant experience or years of experience in lieu of degree.
+ Security+.
+ Proven computer hardware and system troubleshooting skills.
+ System administration skills.
+ Ability to recognize and analyze problems, errors, provide innovative solutions to complex problems, and respond appropriately.
+ Ability to work in a fast-paced, collaborative team environment.
+ Ability to carry/lift 30 pounds of equipment.
**Preferred Qualifications:**
+ Working knowledge of ServiceNow/HelpNow.
+ Experience with shift work supporting 24x7 mission operations.
+ Experience in working with, collaborating with system users and customers.
+ Ability to be flexible and quickly adapt to changing situations.
+ Ability to demonstrate resourcefulness.
**Original Posting:**
June 5, 2025
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 onlyand 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.
REQNUMBER: R-00160474
All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status. Leidos will consider qualified applicants with criminal histories for employment in accordance with relevant Laws. Leidos is an equal opportunity employer/disability/vet.