Sr. Administrator Unix/Linux

montreal, montreal (administrative region), Canada • Posted June 09, 2026

Job Type: Full-time
Location: montreal, montreal (administrative region)
Posted: June 09, 2026
Category: Other-General
Application Deadline: July 19, 2026

Role Description

Location

Montreal, Quebec, CA, H3A 1L6

Department

IT Infrastructure (IT06)

Location

Downtown Montreal (hybrid)

Reports To

Manager, Systems Administration

Overview

The mission of the Infrastructure and Operations, Centre of Expertise group is to make Domtar a world-class customer focused IT organization and effective business partner; become a reference for operating efficiency and be an IT employer of choice.

Responsibilities

  • Platform Administration: Install, configure, patch, and maintain Linux/UNIX operating systems (e.g., RHEL, Oracle Linux, HP-UX), administer physical, virtual, and cloud-based servers, manage system lifecycle activities including builds, upgrades, and decommissioning, perform capacity planning and performance tuning.
  • Availability, Reliability & Operations: Ensure high availability, resiliency, and recoverability of systems, implement and maintai...

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