Senior Systems & Infrastructure Engineer

📍 Location: Fully Remote – Must be available during Australian business hours (AEST/AEDT)

📌 Employment Type: Part-Time (10–15 hours per week)

🎯 Industry: IT & Cybersecurity Services

Archer & Round is a leading IT & Cybersecurity provider delivering secure infrastructure, cloud, and managed security solutions across Australia. We support businesses operating in critical industries through trusted expertise in cybersecurity, cloud security, infrastructure, SIEM/SOC services, and managed IT operations.

We are seeking a Senior Systems & Infrastructure Engineer to support both Archer & Round’s internal environment and our client environments. This role is ideal for an experienced hands-on infrastructure professional who is confident across cloud, systems administration, networking, and onsite infrastructure support coordination.

This is a fully remote, part-time role requiring availability during Australian business hours.

As the Senior Systems & Infrastructure Engineer, you will be responsible for managing and maintaining cloud and on-premise infrastructure environments across both internal and client systems.

The role combines systems administration, infrastructure engineering, cloud management, cybersecurity best practices, and remote operational support. You will work closely with technical and cybersecurity teams to ensure systems remain secure, reliable, scalable, and high-performing.

• Manage and maintain Windows and Linux server environments.
• Administer Active Directory, Microsoft 365, DNS, DHCP, Group Policy, and virtualised environments.
• Support on-premise infrastructure including servers, networking, storage, and backup systems.

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• Perform patching, upgrades, maintenance, and system hardening activities.
• Maintain backup, disaster recovery, and business continuity processes.

• Manage and support cloud platforms including Microsoft Azure, AWS, and hybrid environments.
• Assist with cloud migrations, optimisation, monitoring, and troubleshooting.
• Implement and maintain cloud security best practices and access controls.
• Support identity and access management across cloud and on-premise environments.

• Configure and support firewalls, VPNs, VLANs, routing, and secure network connectivity.
• Assist with security monitoring, endpoint protection, SIEM integrations, and vulnerability remediation.
• Support compliance and cybersecurity initiatives aligned with Essential Eight, ISO 27001, and industry best practices.

• Provide remote infrastructure and technical support across client environments.
• Assist with troubleshooting escalated infrastructure and systems issues.
• Coordinate with onsite teams or vendors where physical infrastructure support is required.
• Maintain technical documentation and contribute to process improvements and operational efficiency.

• Automate routine administrative tasks using PowerShell, Bash, or similar scripting tools.
• Improve monitoring, reporting, and infrastructure management processes.

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🔹 5+ years’ experience in systems administration, infrastructure engineering, cloud operations, or MSP environments.

🔹 Strong experience with Windows Server, Microsoft 365, Active Directory, virtualization, and networking.

🔹 Hands-on experience managing both cloud and on-premise infrastructure environments.

🔹 Experience with Azure and/or AWS cloud platforms.

🔹 Knowledge of networking, firewalls, VPNs, backups, and infrastructure security.

🔹 Strong troubleshooting and problem-solving capability.

🔹 Ability to work independently in a remote environment while collaborating with technical teams.

🔹 Availability to work within Australian business hours.

• Experience working within MSP, cybersecurity, or managed services environments.
• Familiarity with SIEM, endpoint security, and cybersecurity operations.
• Experience with Fortinet, Cisco, Palo Alto, VMware, or Hyper-V environments.
• Relevant certifications such as Microsoft Azure Administrator, AWS, CCNA, Security+, CISSP, or equivalent.
• Exposure to automation, scripting, and infrastructure-as-code practices.