Senior Infrastructure Engineer — Cloud, 365 & Security

Early Start Australia; Perth; On-site; AUD 120,000 - 180,000; Full time

Benefits offered by this job

Discounted health insurance

Salary packaging

Purchased annual leave

Professional development opportunities

Job summary

Early Start Australia is seeking a Senior Infrastructure Engineer to support our national network of clinics and hubs. You will provide advanced expertise across Microsoft 365, cloud, networking, security, and modern workplace technologies.

This is a hands-on, senior role combining problem-solving, project delivery, and continuous improvement. You will mentor junior engineers and help shape security, reliability, and performance across the environment.

Qualifications

• 3+ years in a senior infrastructure engineer role in a medium to large enterprise.
• Hands-on Microsoft 365 administration including Entra, Defender XDR, Intune, Exchange Online, SharePoint and Teams.
• Proficient with Azure Compute, Storage, networking, security.
• Strong IAM knowledge: Conditional Access, PIM, identity collaboration.
• PowerShell scripting and automation experience.
• Experience with enterprise network infrastructure and WiFi.
• Excellent communication and stakeholder engagement.

Responsibilities

• Design, implement, support and improve Microsoft 365, cloud and infrastructure platforms.
• Serve as senior escalation point for complex infrastructure incidents and problems.
• Identify risks and improvements to enhance security, reliability and performance.
• Lead technical projects from planning to delivery.
• Collaborate with stakeholders to translate requirements into scalable solutions.
• Create and maintain architecture diagrams, designs and runbooks.
• Mentor junior engineers and promote best practices.
• Contribute to governance, security controls and infrastructure standards.

Skills

Microsoft 365

Azure

PowerShell

Security

Networking

Documentation

Incident management

Mentoring

Education

Microsoft 365 / Azure certifications

ITIL certification

Tools

ServiceNow

Entra

Defender XDR

Intune

SharePoint

Teams

VPNs & Firewalls

Job description

Early Start Australia is seeking a Senior Infrastructure Engineer to support our national network of clinics and hubs. You will provide advanced expertise across Microsoft 365, cloud, networking, security, and modern workplace technologies.

This is a hands-on, senior role combining problem-solving, project delivery, and continuous improvement. You will mentor junior engineers and help shape security, reliability, and performance across the environment.