Job Description

Overview

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Senior Linux Engineer – Defence Systems (LCS / Secure Environments)

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Rate Guide

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Indicative only – dependent on clearance currency, depth of Linux engineering experience, and Defence environment fit

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Location of Work

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Symonston, ACT (Onsite)

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- Initial term: March 2026 – June 2027
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- Extension options: Up to 2 × 12 months (subject to performance and funding)
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- Engagement type: Time & Materials (ICT labour hire)
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- Hours: Up to 40 hours per week (core hours apply)
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Role Overview

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Babylon Data is seeking a Senior Linux Engineer to support the design, build, operation, and secure maintenance of complex Linux-based environments within a high-assurance Defence capability setting.

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This is a hands-on technical role, embedded within a specialist systems integration and validation environment supporting experimentation, test & evaluation, and emerging capability development. The role requires deep Linux expertise, solid security discipline, and experience operating in classified, offline, and tightly governed environments.

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This position is not suitable for generalist infrastructure engineers or candidates requiring delivery support from their employer.

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Responsibilities

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- Administer and maintain Linux-based servers and platforms across physical and virtual environments
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- Ensure high availability, fault tolerance, and performance of mission-critical systems
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- Design and implement secure system and network configurations aligned with Defence security requirements
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- Support validation and verification of emerging technologies in controlled environments
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- Collaborate with engineering, DevSecOps, and environment teams on secure deployments
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- Conduct system audits, vulnerability assessments, and patching activities




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- Manage SELinux policies, firewall configurations (iptables / nftables), and secure access controls
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- Support accreditation processes and maintain compliance documentation aligned to the ISM
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- Deploy and manage large-scale Linux fleet management tools (e.g. Satellite, Ansible)
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- Develop and maintain automation scripts (Bash, Python, Ansible)
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- Support CI/CD pipelines and DevSecOps practices (GitLab, Ansible)
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- Work with containerised platforms (OpenStack, OpenShift, Docker, Podman, Kubernetes)
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- Standardise system builds and enforce configuration baselines
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- Maintain version-controlled infrastructure-as-code repositories
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Essential Experience & Skills

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- Extensive experience in Linux system administration within secure or mission-critical environments
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- Solid knowledge of networking, storage, and virtualisation (KVM, VMware)
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- Demonstrated ability to implement security controls and respond to cyber threats
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- Experience integrating emerging technologies into secure infrastructure
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- RHCE, Security+, CISSP, or equivalent security certifications
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- ITIL Foundation
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- Cloud certifications (AWS / Azure / GCP) supporting hybrid environments
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- Monitoring and observability tools (Grafana, Prometheus, Elastic stack)
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Security & Compliance Requirements

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- Minimum: NV1 clearance at commencement
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- Requirement: Willingness to upgrade to NV2 if required during the contract
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- Ability to work in controlled-access facilities and comply with Defence security guidance
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- Ability to satisfy ITAR compliance requirements
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Working Arrangements

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- Onsite role – ACT-based
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- Some domestic and occasional international travel may be required
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- Defence Christmas stand-downs apply unless otherwise directed
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📌 Senior Linux Engineer (Canberra)
🏢 Babylon Data
📍 Canberra