Linux Systems Administrator (Work from Home)

Quantrics Enterprises Inc.; Manila; On-site; PHP 600,000 - 900,000; Full time

Job summary

Quantrics Enterprises Inc. is seeking a Linux System Administrator to manage Red Hat server environments and ensure secure, high-availability operations for global IT services. You will patch, upgrade, and optimize systems, and collaborate with cross-functional teams to drive automation and reliability.

The role includes after-hours on-call support, incident response, and disaster recovery participation. Proactive monitoring and strong documentation are essential for ongoing improvements.

Qualifications

• Must-have expertise in Red Hat server administration and patching.
• Experience with virtualization platforms and infrastructure technologies.
• Strong scripting and automation capabilities using common tools.

Responsibilities

• Administer and maintain Red Hat servers, including patching and upgrades.
• Provide on-call support and respond to incidents to minimize disruption.
• Implement, test, and document infrastructure changes.
• Perform security hardening and vulnerability assessments.
• Monitor performance, capacity, and availability with monitoring tools.
• Collaborate with network, database, and application teams.
• Participate in disaster recovery planning and testing.
• Automate tasks using Python, Ansible, Bash, and scripting languages.

Skills

Red Hat Admin

Virtualization

Scripting & Automation

Networking Fundamentals

Security & Vulnerability

Tools

VMware vSphere

VMware vCenter

Red Hat OpenStack

Python

Ansible

Bash

PowerShell

Job description

ROLE OVERVIEW

The Linux System Administrator is responsible for the administration, maintenance, security, performance, and availability of Red Hat server environments supporting Bell Canada.

The role performs server patching, updates, upgrades, performance tuning, security hardening, vulnerability management, system monitoring, incident response, infrastructure changes, and automation. The position also provides after-hours on-call support and participates in disaster recovery and business continuity activities to support stable and resilient server operations.

Working as part of a global IT team, the Linux System Administrator collaborates with network, database, application, and other technology teams to support infrastructure integration, resolve operational issues, and continuously improve server administration processes through automation and effective technical documentation.

SPECIFIC DUTIES AND RESPONSIBILITIES

• Administer and maintain Red Hat servers, including patching, updates, upgrades, and performance tuning, to support stable, reliable, and efficient server operations.
• Provide after-hours on-call support and respond to system incidents and alerts to minimize service disruption and restore normal operations promptly.
• Implement and manage infrastructure changes, including appropriate documentation, testing, and execution, to support controlled changes and minimize operational risk.
• Perform server security hardening and vulnerability assessments and respond to security incidents to strengthen infrastructure security and maintain established security practices.
• Monitor system performance, capacity, and availability using appropriate monitoring tools to proactively identify and resolve potential operational issues.
• Collaborate with network, database, application, and other IT teams to support seamless infrastructure integration, troubleshooting, and technology operations.
• Participate in disaster recovery and business continuity planning and testing to support system recovery and operational resilience in the event of an outage.
• Automate system administration activities using Python, Ansible, Bash, and applicable scripting technologies to improve operational efficiency and reduce manual effort.
• Create and maintain system configurations, procedures, and troubleshooting documentation to support knowledge sharing, operational consistency, and effective issue resolution.
• Maintain knowledge of current technologies and trends related to server administration, security, and operations to support continuous improvement of infrastructure management practices.

COMPETENCIES

Core Competencies (Must-have Competencies)

• Red Hat Server Administration:Ability to administer, maintain, troubleshoot, patch, upgrade, secure, and optimize Red Hat server environments to support stable and reliable operations.
• Virtualization and Infrastructure Technologies:Ability to manage and support enterprise virtualization and infrastructure platforms, including VMware vSphere, VMware vCenter, and Red Hat OpenStack.
• Scripting and Automation:Ability to use Python, Ansible, Bash, PowerShell, and applicable automation technologies to streamline system administration, monitoring, and operational processes.
• Networking Fundamentals:Ability to apply TCP/IP, DNS, DHCP, routing, and network troubleshooting concepts when supporting Linux servers and integrated infrastructure environments.
• Infrastructure Security and Vulnerability Management:Ability to apply server hardening, vulnerability assessment, patch management, security incident response, and compliance