Infrastructure Engineer - Linux & AWS

Xestro Pty Ltd; Sunshine Coast Regional; On-site; AUD 120,000 - 170,000; Full time

Job summary

Xestro is seeking an Infrastructure Engineer – Linux & AWS to operate and modernise our Maroochydore-based production infrastructure. You’ll manage Linux fleet, AWS EC2, and supporting services to ensure reliability of our healthcare SaaS platform.

You’ll join the Platform team, contribute to automation, write runbooks, participate in on-call rotation, and collaborate with experienced engineers to drive security and performance improvements.

Qualifications

• Strong Linux systems administration experience in production environments.
• Experience operating business-critical production systems.
• Hands-on with Apache and PHP in production.
• Extensive AWS experience, including EC2, VPC, IAM, and Auto Scaling.
• Familiarity with Datadog for observability and incident response.
• Experience with infrastructure automation (Ansible, Terraform).
• Experience participating in on-call or production support rotations.
• Ability to document runbooks and best practices.

Responsibilities

• Manage Linux and EC2 infrastructure supporting core production platform.
• Handle patching, capacity management and fleet lifecycle.
• Automate repeatable tasks and improve infrastructure as code.
• Maintain operational runbooks and incident response processes.
• Collaborate with software, platform, and infrastructure engineers.
• Contribute to reliability, security, and documentation improvements.

Skills

Linux administration

AWS EC2

Production systems operation

Networking fundamentals

On-call / production support

Documentation & communication

Tools

Datadog

Ansible

Terraform

GitLab CI/CD

Docker

Kubernetes

Shell scripting

Apache/PHP production services

AWS networking (VPC, DNS, Load Balancing)

Job description

Xestro is growing rapidly, and we’re looking for an Infrastructure Engineer – Linux & AWS to help operate and modernise our established production infrastructure based in Maroochydore.

About Xestro

Xestro is an Australian healthcare software company that helps specialist doctors manage their patients and run their practices. Our cloud-based platform is used daily in hundreds of busy clinics across Australia by thousands of healthcare providers.

We’re based in Maroochydore on the Sunshine Coast, close to the Sunshine Plaza, and have recently moved into a multi-storey office to support our next phase of growth.

Our platform includes an established Linux, Apache, PHP and MySQL environment running on AWS, alongside a newer Kubernetes-based platform. We’re continuing to improve the reliability, security and automation of our existing infrastructure while progressively modernising the wider technology estate.

The Role

Reporting to the Head of Engineering, you’ll join our Platform team in our Maroochydore office and take an active role in managing the Linux and EC2 infrastructure supporting our core production platform.

The work includes Linux fleet administration, AWS infrastructure, Apache and PHP services, RDS, monitoring and observability through Datadog, incident response, capacity management, patching and automation. You’ll help reduce reliance on manually managed systems, improve operational documentation and progressively bring the established platform under repeatable, version-controlled infrastructure management.

You’ll also help set operational standards, identify systemic risks, guide technical decisions and share your Linux and production operations experience across the team.

You’ll work closely with experienced software, platform and infrastructure engineers. This role suits someone who enjoys understanding how complex production systems actually behave, diagnosing problems from first principles and making practical improvements without losing sight of reliability.

Once settled in, the role participates in a shared, paid on-call incident response rotation.

About You

You may come from a traditional systems administration, infrastructure engineering, cloud operations or SRE background.

What Matters Most Is How You Approach The Work

• You take ownership of the systems you operate
• You are comfortable diagnosing production problems under pressure
• You understand Linux systems beyond running standard commands
• You value automation but can work safely with systems that are not yet fully automated
• You improve systems incrementally without disrupting critical services
• You communicate clearly and document what you learn
• You understand that operational work includes monitoring, maintenance and incident response

You’ll Be a Strong Fit If You Have

• Strong professional Linux systems administration experience
• Experience operating business-critical production systems
• Experience operating and troubleshooting production web services, ideally Apache and PHP
• Strong AWS experience, particularly EC2, Auto Scaling Groups, VPC, IAM, load balancing, networking and DNS
• Strong TCP/IP, DNS, TLS and Linux networking fundamentals
• Experience with patching, operating system upgrades and fleet lifecycle management
• Shell scripting / Ansible / Terraform and infrastructure automation experience
• Experience with Datadog or a comparable observability platform, including infrastructure monitoring, logs, alerting and incident response
• Experience developing and maintaining operational runbooks
• Experience participating in an on-call or production support rotation
• Australian working rights and the ability to work from our Maroochydore office

Highly Desirable Experience

• MySQL or Amazon Aurora operations, including replication, connection management and performance diagnosis
• GitLab CI/CD
• Docker or Kubernetes
• Security hardening, vulnerability management and compliance activities
• Backup, recovery and disaster-recovery practices
• Migrating manually managed infrastructure into repeatable, version-controlled automation

Why Join Xestro?

• Job security in a long-established, growing healthcare SaaS company
• Meaningful work supporting systems used every day in real healthcare settings
• The opportunity to take ownership of important production infrastructure
• A practical modernisation program with experienced engineering peers
• Supportive, forward-thinking engineering and Platform teams
• Ongoing learning and a strong focus on security and reliability
• Sunshine Coast lifestyle with a healthy work-life balance