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Groupe SII

Administrateur Système Linux (Senior)

Montreal, QC, Canada

Job type: Full-time
Apply by: Oct 30, 2026
Posting language: English · French
Posted: Sep 30, 2026

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Original job description

English section of this bilingual listing.

Mission

We are seeking a Senior Linux Administrator to join a Level 3 Unix/Linux Systems Administration team. Working within an Agile environment, the successful candidate will contribute to the maintenance, evolution, automation, and security of critical infrastructure while collaborating closely with technical stakeholders to ensure stable, efficient, and secure Linux platforms.

Responsibilities

Provide advanced administration and support for Red Hat Enterprise Linux environments.
Improve tools and processes related to Linux server installation, configuration, and management.
Support development teams in defining and evolving technical architectures while ensuring compliance with security standards and best practices.
Manage incidents, problem resolution, and platform enhancements.
Participate in production support activities and incident analysis.

Automation And Development

Design, develop, and maintain infrastructure automation processes.
Gather functional requirements from infrastructure teams.
Translate business and technical requirements into technical specifications.
Develop APIs and automation tools using Python.
Collaborate with server, storage, and backup teams to expand automation capabilities.

Identity And Access Management

Maintain and enhance solutions used to manage users, groups, and privileged access (sudoers).
Collect and analyze local account data from Linux and Windows servers.
Continuously improve the data collection infrastructure, including architecture, security, documentation, and functional scope expansion.
Investigate and resolve data collection incidents.

Linux Lifecycle Management

Manage the Linux operating system lifecycle.
Perform regular patching and updates of operating system templates across VMware virtualized and bare-metal environments.
Ensure operational stability and security compliance.
Monitor technology obsolescence and recommend improvements.
Maintain related technical documentation.

Required Profile

Bachelor's degree in Computer Science, Software Engineering, or equivalent professional experience.
Strong expertise in Linux system administration.
Excellent analytical and troubleshooting skills.
Solid understanding of distributed software architectures.
Experience with scripting, automation, and infrastructure engineering.
Proficiency in Python and related automation technologies.
Knowledge of PostgreSQL and FastAPI.
Strong communication and teamwork skills.

Read the full bilingual original

Missions

Nous recherchons un(e) Administrateur(trice) Linux Senior pour rejoindre une équipe d’experts en administration de systèmes Unix/Linux de niveau 3. Dans un environnement Agile, la personne contribuera au maintien, à l’évolution et à la sécurisation d’infrastructures critiques. Elle travaillera en étroite collaboration avec les équipes techniques afin d’assurer la stabilité, la performance et l’automatisation des plateformes Linux.

Responsabilités

Assurer l’administration avancée des environnements Linux Red Hat Enterprise.
Améliorer les outils et processus liés à l’installation, à la configuration et à la gestion des serveurs Linux.
Accompagner les équipes de développement dans la définition et l’évolution de leurs architectures techniques tout en respectant les normes de sécurité et les standards établis.
Assurer la gestion des incidents, des problèmes et des évolutions des produits maintenus par l’équipe.
Participer à l’analyse et à la résolution des incidents de production.

Automatisation Et Développement

Concevoir, développer et maintenir des processus d’automatisation.
Recueillir les besoins fonctionnels des différentes équipes d’infrastructure.
Traduire les besoins en spécifications techniques et assurer leur validation auprès des experts concernés.
Développer des API et des outils d’automatisation en Python.
Collaborer avec les équipes serveurs, stockage et sauvegarde afin de renforcer les capacités d’automatisation.

Gestion Des Accès Et Des Identités

Participer à la maintenance et à l’évolution de solutions de gestion des utilisateurs, des groupes et des privilèges (sudoers).
Collecter et analyser les données provenant des comptes locaux sur des serveurs Linux et Windows.
Assurer l’amélioration continue de l’infrastructure de collecte de données, notamment au niveau de l’architecture, de la sécurité, de la documentation et de l’extension du périmètre fonctionnel.
Investiguer et résoudre les incidents liés à la collecte de données.

Gestion du cycle de vie des systèmes Linux :

Gérer le cycle de vie des systèmes d’exploitation Linux.
Réaliser les opérations régulières de mise à jour et de correction des modèles de systèmes dans des environnements virtualisés VMware ou physiques (bare metal).
Maintenir les conditions opérationnelles et de sécurité des plateformes.
Assurer une veille technologique sur les enjeux d’obsolescence.
Maintenir à jour la documentation technique associée.

Profil Recherché

Diplôme universitaire en informatique, génie logiciel ou expérience équivalente.
Solide expertise en administration de systèmes Linux.
Excellente capacité d’analyse et de résolution de problèmes complexes.
Bonne compréhension des architectures logicielles distribuées.
Expérience en automatisation et en développement de scripts.
Maîtrise de Python et des technologies associées à l’automatisation.
Connaissance de PostgreSQL et FastAPI.
Excellentes aptitudes en communication et en collaboration.
Expérience dans un rôle d’expert Linux.
Expérience dans un environnement Agile.

Provide advanced administration and support for Red Hat Enterprise Linux environments.
Improve tools and processes related to Linux server installation, configuration, and management.
Support development teams in defining and evolving technical architectures while ensuring compliance with security standards and best practices.
Manage incidents, problem resolution, and platform enhancements.
Participate in production support activities and incident analysis.

Automation And Development

Design, develop, and maintain infrastructure automation processes.
Gather functional requirements from infrastructure teams.
Translate business and technical requirements into technical specifications.
Develop APIs and automation tools using Python.
Collaborate with server, storage, and backup teams to expand automation capabilities.

Identity And Access Management

Maintain and enhance solutions used to manage users, groups, and privileged access (sudoers).
Collect and analyze local account data from Linux and Windows servers.
Continuously improve the data collection infrastructure, including architecture, security, documentation, and functional scope expansion.
Investigate and resolve data collection incidents.

Linux Lifecycle Management

Manage the Linux operating system lifecycle.
Perform regular patching and updates of operating system templates across VMware virtualized and bare-metal environments.
Ensure operational stability and security compliance.
Monitor technology obsolescence and recommend improvements.
Maintain related technical documentation.

Required Profile

Bachelor's degree in Computer Science, Software Engineering, or equivalent professional experience.
Strong expertise in Linux system administration.
Excellent analytical and troubleshooting skills.
Solid understanding of distributed software architectures.
Experience with scripting, automation, and infrastructure engineering.
Proficiency in Python and related automation technologies.
Knowledge of PostgreSQL and FastAPI.
Strong communication and teamwork skills.
Previous experience in a Linux expert or senior Linux administration role.
Experience working in Agile environments.

Partenaire technologique de grandes entreprises depuis 1979, le Groupe SII est au cœur de l'économie de l'innovation, avec 16 000 employés, une présence internationale dans 20 pays et un chiffre d'affaires dépassant 1,621 milliard de dollars canadiens.

SII Canada offre à ses clients une expertise technique de pointe dans les domaines du développement d'applications, du web et du mobile, de la cybersécurité et du cloud computing. Nous fournissons également des services d'ingénierie, notamment pour les systèmes embarqués dans divers secteurs industriels. Notre ambition est de faire progresser les systèmes d'information et de contribuer à la création des produits et services de demain pour nos clients.

De plus, l'inclusion est au cœur de notre culture d'entreprise. SII Canada s'engage à offrir un environnement de travail équitable et respectueux qui favorise la diversité et l'égalité des chances

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More about this job

Responsibilities

Administer and secure Red Hat Enterprise Linux platforms, manage their lifecycle across VMware and bare-metal environments, and support production incidents and platform improvements. Develop Python-based APIs and automation, improve identity and access management and account-data collection, and collaborate with infrastructure and development teams.

Requirements

Requires strong Linux administration expertise, experience in a senior or expert Linux role, and skills in scripting and infrastructure automation, particularly with Python. Candidates should have a bachelor's degree in computer science or software engineering, or equivalent experience, along with knowledge of distributed architectures, PostgreSQL, FastAPI, and Agile environments.

Skills

Linux System Administration
Red Hat Enterprise Linux
Python
Infrastructure Automation
API Development
PostgreSQL
FastAPI
VMware
Linux Lifecycle Management
Patching and Updates
Identity and Access Management
Sudoers and Privileged Access
Incident Management
Distributed Software Architectures
Agile Methodologies
Technical Documentation

Visa sponsorship

Not detected in the job text

Keywords

Linux
Unix
Red Hat Enterprise Linux
Python
PostgreSQL
FastAPI
VMware
Bare-Metal Servers
Infrastructure Automation
API Development
System Administration
Linux Lifecycle Management
Patching
Identity and Access Management
User and Group Management
Sudoers
Local Account Data
Windows Servers
Incident Management
Production Support
Distributed Software Architectures
Agile
Security Compliance
Technical Specifications
Infrastructure Engineering
Server Management
Storage
Backup
Technology Obsolescence

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