Countersight is a specialist cybersecurity company delivering security research, capability development and consulting services to clients within government and across the private sector. We are independent, Australian, and Canberra based but with the flexibility to operate Australia wide.
Our team works on complex cyber operations and engineering challenges across infrastructure, security architecture, detection and response, with a strong focus on delivering practical, high-impact outcomes for our clients.
The Role
Role Title:
Systems Engineer (Infrastructure & Security Architecture)
Hours:
Full-time
Salary:
$100,000 – $180,000 (plus super) based on experience
Our Systems Engineers are responsible for designing, building, securing, and operating Countersight's internal and client-facing infrastructure across a hybrid environment spanning on-premises systems and multiple cloud platforms.
This role sits at the intersection of infrastructure engineering and security engineering, with a robust emphasis on building secure, scalable, and maintainable systems. You will work across Linux and Windows environments, public cloud platforms (Azure, AWS, GCP), and supporting networking and identity systems to ensure our infrastructure is resilient, performant, and aligned with best practice security controls.
The role requires a hands-on engineer who can both operate production systems and design improvements, with a focus on automation, simplification, and continuous uplift.
Typical responsibilities include:
Designing, deploying and maintaining hybrid infrastructure across on-premises and cloud environments




Administering and hardening Linux and Windows systems in line with security best practices
Managing and improving cloud environments across Azure, AWS and GCP
Designing and maintaining identity and access management solutions (e.g. Entra ID, Auth0, SSO, RBAC)
Implementing and maintaining secure network architectures including VPNs, remote access, segmentation and hybrid connectivity
Implementing and maintaining infrastructure-as-code and automation (e.g. Terraform, Ansible, scripting)
Monitoring system health, performance, and availability
Designing and implementing security controls including system hardening, patching, and logging
Supporting integration with security tooling including SIEM and monitoring platforms
Reviewing environments to improve security, cost, and operational efficiency
Documenting systems, architectures, and procedures
What we are looking for
We are looking for experienced systems and infrastructure engineers who are comfortable working across core infrastructure, cloud platforms, and security controls, and who enjoy solving complex engineering problems.
Must-have
Experience in systems or infrastructure engineering roles
Hands-on experience with Linux and Windows Server environments




Strong experience with at least one cloud platform (Azure, AWS, or GCP)
Experience with networking, hybrid environments, and cloud connectivity
Strong understanding of identity and access management (Entra ID, SSO, RBAC)
Experience implementing security controls (hardening, patching, logging)
Experience with infrastructure-as-code (Ansible & Terraform preferred)
Scripting capability (Python, Bash, or PowerShell)
Strong troubleshooting and problem-solving skills
Strong communication and stakeholder engagement skills
Nice-to-have
Multi-cloud experience (Azure, AWS, GCP)
Microsoft 365 security capabilities (Defender, Conditional Access, Purview)
Familiarity with SIEM/logging pipelines
Exposure to detection engineering or SOC environments
Familiarity with Australian Government frameworks (ISM, PSPF, Essential Eight)
Experience with Zero Trust architectures
Why work for Countersight
As a small company, we prioritise supporting our team and fostering a positive, flexible, and enjoyable work culture.
Our work allows us to contribute to meaningful security outcomes while building advanced capability across infrastructure and security engineering.
We enjoy solving complex problems, improving systems, and building things properly, and we think you will too.
To be eligible to apply for this position you must:
Be an Australian Citizen
Be eligible to obtain and maintain an Australian Government security clearance (NV1 minimum preferred)
Satisfy pre-employment screening
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📌 Systems Engineer (Infrastructure & Security Architecture) (Canberra)
🏢 Countersight
📍 Canberra