Gerald Sim

Cloud Infrastructure · Site Reliability · Kubernetes · Automation
gerald@meappy.com|Adelaide, South Australia|sysad.mn|linkedin.com/in/geraldsim|github.com/meappy

Profile

Infrastructure engineer with 15+ years on production Linux and cloud, usually the senior infrastructure voice in a small team. I build and own the foundation a platform runs on: landing zones, networking and private connectivity, Terraform and CI/CD, IAM and secrets, observability and recovery, across GCP, AWS and Azure, with Kubernetes in production on GKE, EKS, AKS, Rancher and OpenShift. Most recently in regulated financial infrastructure, building the platform beneath a regulated settlement service along with the documentation its clients' auditors ask for. Much of my work is automation: taking manual steps out of operational and back-office processes, using AI where it beats a script.

Core Skills

Cloud
GCP · AWS · Azure. Landing zones, VPC/CIDR design, private connectivity, cost visibility (FinOps)
Kubernetes
GKE · EKS · AKS · Rancher/RKE · k3s · OpenShift. Helm, ArgoCD, image supply chain
IaC & CI/CD
Terraform (module design, remote state, drift control) · Ansible · SaltStack · GitHub Actions · Azure DevOps · HCP Terraform
Security
IAM & least privilege · Workload Identity Federation · Secret Manager / KMS · network segmentation · Cloud Armor · OIDC/SAML (Entra, Google)
Observability
Prometheus · Grafana · Splunk · Elastic · New Relic. SLOs, alerting, runbooks, incident response
Platform
RHEL · Ubuntu · Nginx/Apache · MySQL/MariaDB · Redis · DNS, TLS, routing, firewalling · Bash, Python
AI automation
Vision and language providers wired into operational workflows · Playwright browser automation · deterministic-first, model-on-fallback design · agent tooling run as normal Kubernetes workloads
Ways of working
Agile · service delivery management · architecture & design authoring · client and auditor engagement

Experience

Cloud Infrastructure Contractor, financial market infrastructure client
Apr 2026 – Jul 2026
Remote, Australia · GCP · platform foundation, extended into a second phase for observability and operational readiness
Kubernetes & GCP Cloud Operations Lead, Wipro at Woolworths Group
Mar 2024 – Present
Adelaide, South Australia
Independent Consultant, Meatmen (Singapore)
Sep 2025 – Present
Remote · AWS · e-commerce platform
Site Reliability Engineer / DevOps Engineer, Alcidion Group
Nov 2019 – Feb 2024
Adelaide, South Australia · clinical software for hospitals in Australia, New Zealand and the UK
Senior Cloud Engineer / Cloud Consultant, 5G Networks and Comunet
Mar 2019 – Nov 2019
Adelaide, South Australia
Technical Service Manager / Lead Engineer / Linux Escalation Engineer, Hostworks
May 2011 – Feb 2019
Adelaide, South Australia · national enterprise clients
Senior Systems Engineer / Systems Engineer, Ufinity Pte Ltd
Dec 2006 – Feb 2011
Singapore

Education & Certifications

BA, Mass Communication (Multimedia)
Curtin University of Technology
2003–2006
Diploma, Digital Media Design
Nanyang Polytechnic
1999–2002
Red Hat Certified Engineer (RHCE)2010
RHCSA in Red Hat OpenStack2015
Red Hat Certified Virtualization Administrator2014
Certificates of Expertise: PaaS, Performance Tuning, Network Security2012–2016

Australian working rights · Languages: English (native), Mandarin (professional working)