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SII Canada

Administrateur Système Active Directory (Senior)

Montreal, QC, Canada

Full-time

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Job details

Job type: Full-time
Apply by: Dec 5, 2026
Posting language: English · French
Posted: Nov 5, 2026

Original job description

English section of this bilingual listing.

Context

We are looking for a senior professional specializing in Active Directory administration, capable of operating at an L3 level within complex environments. The successful candidate will have deep Active Directory expertise and be fully autonomous when dealing with advanced technical issues, beyond standard system administration activities such as account creation or Organizational Unit (OU) management.

The position requires strong troubleshooting capabilities, the ability to contribute to large-scale projects, and the capacity to become productive quickly within the existing environment. Technical onboarding is expected to take a few weeks, with a maximum ramp-up period of approximately one to two months.

Your Responsibilities

Administer and maintain an On-Premises Active Directory infrastructure at an L3 expertise level.
Investigate and resolve complex Active Directory incidents.
Participate in global infrastructure evolution and modernization projects.
Contribute to a major Active Directory infrastructure revamp.
Participate in the upgrade of approximately 350 servers currently running legacy operating systems approaching end of life.
Support technical migration activities, including network configuration, host management, machine recreation, and validation of their integration into the environment.
Develop and maintain administration and automation scripts using PowerShell.
Support and maintain ADFS connectors used within the environment.
Participate in production support rotations within the team.
Collaborate with other technical teams within an Agile environment.

Your Profile

Advanced expertise in Active Directory administration within an On-Premises environment.
Significant experience providing L3 administration and advanced troubleshooting.
Strong PowerShell expertise, including the ability to develop administration and automation scripts.
Ability to work independently on complex Active Directory infrastructures and understand associated technical dependencies.
Ability to lead or independently contribute to large-scale technical projects.
Strong professional communication skills in both French and English.
High degree of autonomy and ability to quickly understand and operate within an existing technical environment.

Assets:

Experience with ADFS.
Knowledge of Azure.
Experience with Active Directory and Windows Server migration or infrastructure modernization projects.
Experience working in an Agile environment.

The role is primarily focused on On-Premises Active Directory. Specific Hybrid or Cloud Active Directory experience is not required.

Four days per week of on-site presence are required.

Read the full bilingual original

Contexte

Nous recherchons un profil senior spécialisé en administration Active Directory, capable d’intervenir à un niveau L3 sur des environnements complexes.

La personne recherchée devra disposer d’une expertise approfondie d’Active Directory et être autonome sur des problématiques avancées, au-delà des activités classiques d’administration système telles que la création de comptes ou la gestion des unités organisationnelles (OU).

Le poste nécessite une capacité à diagnostiquer et résoudre des incidents complexes, à contribuer à des projets d’envergure et à devenir rapidement autonome dans l’environnement. L’intégration technique devra pouvoir se faire en quelques semaines, avec un délai maximal estimé entre un et deux mois.

Tes Responsabilités

Administrer et maintenir une infrastructure Active Directory On-Premises à un niveau d’expertise L3.
Analyser et résoudre des incidents complexes liés à Active Directory.
Participer à des projets globaux d’évolution et de modernisation de l’infrastructure.
Contribuer à un projet majeur de refonte de l’environnement Active Directory.
Participer à la mise à niveau d’environ 350 serveurs utilisant actuellement des systèmes d’exploitation historiques arrivant prochainement en fin de vie.
Contribuer aux processus techniques associés aux migrations : configuration réseau, gestion des hôtes, recréation des machines et validation de leur intégration dans l’environnement.
Développer et maintenir des scripts et outils d’administration avec PowerShell.
Participer au support et au maintien des connecteurs ADFS utilisés dans l’environnement.
Assurer le support de production dans le cadre d’un système de rotation au sein de l’équipe.
Collaborer avec les différentes équipes techniques dans un environnement de travail Agile.

Ton Profil

Expertise avancée en administration Active Directory dans un environnement On-Premises.
Expérience significative en administration de niveau L3 et en troubleshooting avancé.
Excellente maîtrise de PowerShell et capacité à développer des scripts d’automatisation et d’administration.
Capacité à intervenir sur des infrastructures Active Directory complexes et à comprendre les dépendances techniques associées.
Capacité à piloter ou contribuer de manière autonome à des projets techniques d’envergure.
Très bonne capacité à communiquer en français et en anglais dans un contexte professionnel.
Forte autonomie et capacité à monter rapidement en compétence sur un environnement existant.

Atout

Expérience avec ADFS.
Connaissances Azure.
Expérience dans des projets de migration ou de modernisation d’infrastructures Active Directory et Windows Server.
Expérience de travail dans un environnement Agile.

Modèle Travail

Le poste s’intègre au sein d’une petite équipe technique fonctionnant selon une méthodologie Agile.

En raison du niveau de séniorité recherché et de la taille de l’équipe, une expertise Active Directory immédiatement opérationnelle est essentielle.

Le poste est principalement orienté Active Directory On-Premises. Une expérience spécifique des environnements Active Directory hybrides ou Cloud n’est pas requise.

Une présence au bureau de 4 jours par semaine est requise.

____________________________________________________________________________________________________________

Context

We are looking for a senior professional specializing in Active Directory administration, capable of operating at an L3 level within complex environments. The successful candidate will have deep Active Directory expertise and be fully autonomous when dealing with advanced technical issues, beyond standard system administration activities such as account creation or Organizational Unit (OU) management.

The position requires strong troubleshooting capabilities, the ability to contribute to large-scale projects, and the capacity to become productive quickly within the existing environment. Technical onboarding is expected to take a few weeks, with a maximum ramp-up period of approximately one to two months.

Your Responsibilities

Administer and maintain an On-Premises Active Directory infrastructure at an L3 expertise level.
Investigate and resolve complex Active Directory incidents.
Participate in global infrastructure evolution and modernization projects.
Contribute to a major Active Directory infrastructure revamp.
Participate in the upgrade of approximately 350 servers currently running legacy operating systems approaching end of life.
Support technical migration activities, including network configuration, host management, machine recreation, and validation of their integration into the environment.
Develop and maintain administration and automation scripts using PowerShell.
Support and maintain ADFS connectors used within the environment.
Participate in production support rotations within the team.
Collaborate with other technical teams within an Agile environment.

Your Profile

Advanced expertise in Active Directory administration within an On-Premises environment.
Significant experience providing L3 administration and advanced troubleshooting.
Strong PowerShell expertise, including the ability to develop administration and automation scripts.
Ability to work independently on complex Active Directory infrastructures and understand associated technical dependencies.
Ability to lead or independently contribute to large-scale technical projects.
Strong professional communication skills in both French and English.
High degree of autonomy and ability to quickly understand and operate within an existing technical environment.

Assets:

Experience with ADFS.
Knowledge of Azure.
Experience with Active Directory and Windows Server migration or infrastructure modernization projects.
Experience working in an Agile environment.

Work Environment

The position is part of a small technical team operating within an Agile environment. Given the level of seniority required and the size of the team, candidates must have immediately operational Active Directory expertise.

The role is primarily focused on On-Premises Active Directory. Specific Hybrid or Cloud Active Directory experience is not required.

Four days per week of on-site presence are required.

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 maintain complex On-Premises Active Directory infrastructure at an L3 level, resolve advanced incidents, and develop PowerShell administration and automation scripts. Contribute to an Active Directory revamp and large-scale server upgrades and migrations, support ADFS connectors, and participate in production support rotations.

Requirements

Candidates need advanced, immediately operational On-Premises Active Directory expertise, significant L3 administration and troubleshooting experience, and strong PowerShell skills. They must be autonomous in complex environments, able to contribute independently to major technical projects, and communicate professionally in French and English; ADFS, Azure, migration, modernization, and Agile experience are assets.

Skills

Active Directory Administration
On-Premises Infrastructure
L3 Support
Advanced Troubleshooting
PowerShell
Automation Scripting
ADFS
Azure
Windows Server Migration
Infrastructure Modernization
Network Configuration
Production Support
Agile Methodology
French Communication
English Communication

Visa sponsorship

Not detected in the job text

Keywords

Active Directory
On-Premises Infrastructure
L3 Administration
Advanced Troubleshooting
PowerShell
Automation
ADFS
Azure
Windows Server
Server Upgrades
Infrastructure Modernization
Active Directory Revamp
Migration
Network Configuration
Host Management
Machine Recreation
Production Support
Agile
Technical Dependencies
French
English

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