What are the responsibilities and job description for the Senior DevOps Engineer position at 3M Consultancy?
Job Title: Senior DevOps / Platform Engineer
Location: Sydney, Australia.
Duration: 6-12 Months Contract.
Role Overview
We are seeking a hands-on Senior DevOps/Platform Engineer to own the full delivery lifecycle of a multi-tenant AI SaaS platform across AWS, Azure, and GCP. This role spans both day-to-day operational responsibilities and strategic architectural contribution.
Infrastructure & Cloud
• Manage Terragrunt-wrapped Terraform IaC for multi-customer cloud account provisioning
• Provision and maintain cloud resources including EKS, AKS, RDS, Redis, ACR/ECR, KMS/Key Vault, and workload identity across cloud providers
• Onboard new clusters end-to-end from bootstrap scripts through ArgoCD app-of-apps patterns
Kubernetes & GitOps
• Maintain GitOps-driven Kubernetes workload delivery via ArgoCD and Helmfile
• Author and promote Helm chart overlays across multiple environments
• Debug and remediate containerized workloads (Temporal, Authentik, kgateway, observability stacks) across cloud providers
CI/CD & Automation
• Build and maintain reusable GitHub Actions CI/CD workflows for Docker image builds, Terraform plan/apply gates, and cross-repo deploys
• Troubleshoot and remediate issues across a highly variable, multi-layer technology stack
Architecture & Engineering
• Contribute to product feature enhancements through design and implementation of architectural improvements
• Ensure all architectural changes satisfy requirements for resiliency, security, and compatibility across multiple cloud providers
Required Skills
• Production-level Terraform and Terragrunt in multi-account/multi-cloud environments
• Kubernetes (EKS and AKS) — multi-cluster management, networking, workload troubleshooting
• ArgoCD, Helmfile, GitOps delivery patterns
• GitHub Actions CI/CD pipeline authoring
• AWS, Azure, and GCP — simultaneous multi-cloud experience required
• Familiarity with identity and secrets management (workload identity, KMS, Key Vault)
• Experience with observability tooling and modern SaaS platform operations