Sr. Linux & OCI Administrator (Oracle Linux / RHEL)

Mitratech • toronto, on • Posted June 01, 2026

Position Overview

Job Overview

We are seeking an experienced Sr. Linux & Oracle Cloud Infrastructure (OCI) Administrator to support a production application hosted on OCI. The role focuses on Oracle Linux administration, OCI networking and security, Terraform-based automation, and operational support for SFTP and mail services.

Essential Duties & Responsibilities

  • Administer and support Oracle Linux systems (patching, tuning, troubleshooting)
  • Manage OCI resources: compute, VCNs, subnets, routing, load balancers
  • Configure and maintain OCI security (IAM, NSGs, security lists, compartments)
  • Design and troubleshoot OCI networking and connectivity issues
  • Provision and manage infrastructure using Terraform (IaC)
  • Support SFTP and mail services (secure access, monitoring, troubleshooting)
  • Perform system monitoring, backup coordination, and DR support
  • Participate in production support, incidents, and on‑c...