Matthew Callinan

Staff Cloud & Platform Engineer · SRE · DevOps

7+ years building and scaling cloud infrastructure across GCP and AWS using Kubernetes, Terraform, and automation-first practices. Passionate about site reliability engineering, platform tooling, and helping teams ship faster with confidence. Based in Melbourne, Australia.

LinkedIn GitHub

Tech Stack

Cloud

GCP

AWS

Containers & Orchestration

Docker

Kubernetes

Helm

ArgoCD

Flux

Infrastructure as Code

Terraform

Crossplane

Config Connector

CI/CD

GH Actions

Harness

Jenkins

Observability

Prometheus

Grafana

OpenTelemetry

Dynatrace

Languages

Python

Bash

Rust

Web & Frameworks

Hugo

Bootstrap

AI & Tooling

Ollama

Copilot

Claude

Gemini

Hermes

PI Agent

MCP

KubeFlow

Proficiency

Cloud

Programming

Architecture

Design

Mentoring

Side Projects & Homelab

Homelab
A self-hosted playground built on Unraid, running services and experiments around the clock.
Home Kubernetes Cluster
An ARM based local Kubernetes cluster built from KubeSpray for local cluster creation and local application testing.
n8n
Workflow automation platform wiring services and automations together.
Ollama
Local LLM serving — Gemma4 & Qwen3.8 models, self-hosted.
Hermes
AI assistant hub for chat and automations across the lab.
PI-Agents
Agent orchestration experiments with self-hosted coding agents.
Keyboard Building
Designing and assembling custom mechanical keyboards.
Multiplayer Sudoku
In the works — a realtime Sudoku game to enjoy with friends.

Work Experience

Staff Platform Engineer

CommonWealthBank - CBA

2026 – Present

Platform Engineering on AWS & Kubernetes
Large volume data processing & ETL
AI Agents & MCP for Automation and process improvements

Senior Cloud Engineer

Endeavour Group

2025

Ownership over large-scale GCP environment
Leading infrastructure uplift and Terraform adoption
Delivered NCC Based network uplift for Business ERP Integrations

Platform Engineer — Expanded GCP Scope

Ramsay HealthCare - Through Innablr

2023 - 2024

Platform engineering focused on data pipeline infrastructure
GCP Landing Zone architecture via Terraform
VPC Service Controls implementation for Medical Data
GitHub Actions self-hosted runners on GKE
BigQuery data backup and recovery

Senior DevOps Engineer

Innablr

2022

Platform Engineer embedded in the ANZx / ANZ Plus project
GKE architecture guidance and complex solution delivery
Cost savings through Premptible VM adoption and workload optimization
Resolved security vulnerabilities and upskilled team members

DevOps Engineer / SRE Lead

Innablr

2020 – 2022

Led SRE team on ANZx / ANZ Plus project
Trained staff in reliability engineering practices
Owned incident resolution and on-call response
Created SLI/SLOs for key services
Implemented monitoring and alerting with OpenTelemetry
Drafted Runbooks and operational documentation

Associate Engineer

Innablr

2019

Built new GKE environment with an automation-first approach
Began career as a DevOps / Platform Engineer
Contributed to the development of internal tooling and automation scripts
Built and supported 30+ Kubernetes clusters

Systems Administrator / Service Centre Manager

Centorrino Technologies

2015 – 2018

Started in helpdesk; progressed to managing service centre operations
SOE specialist for server and workstation automation project work
Scripted multiple automation tasks to improve efficiency

Education & Certifications

Github Actions Certified

Microsoft

2026

OpenTelemetry Certified Associate

Linux Foundation - OpenTelemetry Project

2026

Professional Cloud Architect

Google Cloud Platform Certification

2022 2026

Google Cloud Professional Cloud Architect

GitOps at Scale

Argo CD — Codefresh Certification

2026

GitOps Fundamentals

Argo CD — Codefresh Certification

2024

Bachelor of Computer Science

La Trobe University · Major: Network Engineering · Minor: Security

2015 – 2018

Representative in the National Programming Challenge (2015, 2017)