Buckham & Duffy (B&D;) is a Brisbane-based technology consulting and software delivery firm. We partner with government, international development organisations, industry associations, and mid-market enterprises to deliver technology strategy, custom SaaS products, and digital transformation programs.

We're a tight team of ~20 professionals who value sharp thinking, low ego, and getting things done. We're scaling our security and infrastructure practice, and we need a strong technical engineer to do it with us.

This is a hands on role with a lot of self-direction. You'll be working on our internal cyber capacity and hardening as well handling the cyber/infrastructure programs that we run for our clients. We develop a lot of custom internal tooling to assist with the delivering and maintenance of our infrastructure and cyber setups so we're looking for a creative thinker who looks to drive outcomes; not just run benchmark suites.

You’ll need a solid Linux and AWS backing as all our digital assets are Linux OS based and cloud infrastructure is mostly AWS with a small amount of Azure. If you're the type of person that maintains a homelab, you'll fit in well here. We have a strong focus on maintainability so Terraform and Ansible are at the core of everything we do.

Key Responsibilities

Administer Linux servers and Proxmox virtualisation across multiple environments.

Deploy and manage self-hosted services (mostly docker compose stacks running FOSS platforms)

Harden and operate cloud environments across AWS, Microsoft 365 and Azure - identity, conditional access, tenant baselines, workload controls.





Apply CIS Benchmarks and equivalent hardening standards as the default baseline.

Operate and tune SIEM platforms: triage alerts, develop rules, manage log sources, report on posture.

Monitor and validate backups

Configure and maintain firewalls, VPNs, and network segmentation.

Run basic vulnerability scanning and penetration testing, validate findings, and drive remediation.

Lead incident response coordination with our development team

Drive monthly reporting to our clients on continuous improvement activities

About You

You’ll have:

3+ years in a hands-on technical security or infrastructure engineering role.

Demonstrable experience hardening and operating AWS, Microsoft 365, and Azure environments.

Practical SIEM administration experience (rule tuning, log sources, alert triage).

Robust Linux administration skills - comfortable in the cli

Experience with Proxmox or a comparable virtualisation platform (VMware, Hyper-V, KVM).

Working knowledge of CIS Benchmarks or equivalent hardening standards.

Firewall and networking experience covering segmentation, VPNs, and rule management.

Familiarity with vulnerability scanning and basic penetration testing tooling and methodology.

Clear written and verbal communication, including the ability to brief non-technical stakeholders.

IAAS experience, ideally Terraform

Ansible

Security certifications (Security+, AZ-500, AWS Security Specialty, OSCP, SSCP, or equivalent).

Experience supporting government or regulated clients (IRAP, ISM, Essential Eight, ISO 27001).

Prior consulting or MSP delivery experience.

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📌 Infrastructure & Cybersecurity Engineer (Brisbane)
🏢 Buckham & Duffy
📍 Brisbane