Systems Engineer (Infrastructure & Security Architecture)

Who we are

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)

Location: Canberra ACT

Hours: Full-time

Salary: $100000 $180000 (plus super) based on experience

Our Systems Engineers are responsible for designing building securing and operating Countersights 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 strong 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

Experience designing secure cloud landing zones

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.

Eligibility

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

Application Procedure

Please provide a current resume and a covering letter highlighting your relevant experience.

For enquiries contact: