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Senior Linux Systems Engineer (Networking)
Amentum —Remote
Expert-level knowledge of Red Hat Enterprise Linux (RHEL 8/9) administration (RHCE-level skills or equivalent experience).

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Senior Linux Systems Engineer (Networking)

Amentum -
Remote

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Job Details

Full-time

Qualifications

TCP
System administration
Administrative experience
DHCP
Confluence
Network protocols
Virtualisation
DNS
RHCE
Network engineering

Full Job Description

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.

Are you seeking a career that offers a healthy work-life balance, a friendly company culture, and engagement with a supportive community?

We’ll inspire and empower you to deliver your best work so you can evolve, grow and succeed – today and into tomorrow. We offer an exciting range of opportunities to develop your career within a supportive and diverse team who always strive to do the right thing for our people, clients and communities.

People are our greatest asset, and we offer a competitive package to retain and attract the best talent.

Our values stand on a foundation of safety, integrity, inclusion and diversity. We put people at the heart of our business, and we genuinely believe that we all succeed by supporting one another through our culture of caring. We value positive mental health and a sense of belonging for all employees.

Amentum is proud to be an Equal Opportunity Employer, please refer to our Enterprise Agreement and www.fairwork.gov.au for more information.

Role Title: Senior Linux Systems Engineer (Networking)

Role Description:
We are seeking an engineer to manage our core network infrastructure, which is built on Red Hat Enterprise Linux. This hybrid role requires a strong background in both Linux systems administration and network engineering. You will be responsible for configuring, securing, and maintaining the RHEL 9 hosts that function as our primary routers, firewalls, and service gateways.

Key Responsibilities:

Design, implement, and manage OS-level network security using firewalld and/or nftables (e.g., defining zones, services, and rich rules).
Configure and troubleshoot advanced networking on RHEL, including static routing, policy-based routing, and network-teaming.
Maintain and configure nginx as a reverse proxy for internal web services.
Manage KVM virtualization (libvirt) and associated bridged/routed networking for guest VMs.
Secure and manage remote access protocols, primarily OpenSSH.
Collaborate with the systems team on the migration to RHEL 9.
Contribute to infrastructure planning and the implementation of new systems or upgrades.
Management of updating and patching of the OS and software.
System Administration tasks as required, such as software deployment, upgrade installation, security remediation tasks and account management.
Management of monitoring and logging solutions.

Essential Requirements:

Expert-level knowledge of Red Hat Enterprise Linux (RHEL 8/9) administration (RHCE-level skills or equivalent experience).
In-depth understanding of the Linux networking stack (iproute2, firewalld, nftables).
Proven experience with nginx for reverse proxy and load-balancing configurations.
Strong understanding of core networking protocols (TCP/IP, subnetting, routing, DNS, DHCP).
Familiarity with RHEL-based virtualization (KVM, qemu).
In-depth knowledge of Red Hat Satellite Server, including lifecycle management, patch deployment, and system provisioning.
Thorough understanding of operating system standard operating environments (SOEs), including risk mitigation strategies and security hardening techniques.
Proficient in maintaining technical documentation, including process and architecture documentation using Confluence or similar platforms.
Demonstrated ability to communicate complex technical and policy requirements across varying levels of seniority.
Proven ability to manage multiple concurrent projects, while also providing business-as-usual (BAU) operational support.
Relevant Linux or Red Hat credentials.

Required Security Clearance Level: NV1 minimum/NV2 preferred

Location: ADL

Weekly Hours: 40

Apply Now

Refine Your Search

systems engineer (networking) jobs in remote

Senior Linux Systems Engineer (Networking)

Systems Integration Engineer

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Customer Care L3 - Australia

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