System Administrator

7 days ago


Ottawa, Ontario, Canada Communications Security Establishment Canada | Centre de la sécurité des télécommunications Canada Full time $90,000 - $120,000 per year

Join the Mission: Shape Canada's Top Secret Future

Are you ready to work on the most secure and impactful IT systems in the country? The Communications Security Establishment (CSE) is on a bold journey to become the national service provider of Top Secret services for the Government of Canada—and we want you on our team.

We're hiring IT-01 to IT-04 equivalents to join our Top Secret Infrastructure (TSI) group. This is your chance to be part of something big—where your work directly supports national security and innovation at the highest level.

What You'll Do

You'll will help design, build, and manage the backbone of Canada's Top Secret enterprise services. From secure endpoints to authentication systems, from collaboration tools to certificate management—you'll be at the heart of it all.

Your work will span:

Public Key Infrastructure (PKI) and certificate management

Authentication and authorization systems

Enterprise collaboration and communication platforms

Secure data transfer mechanisms

Various endpoint solutions

What We're Looking For

We're seeking passionate professionals with experience in one or more of the following:

Implementing PKI architectures (e.g. Entrust, Microsoft CA)

Modern authentication (OAuth, FIDO2, Keycloak)

Directory services (Active Directory, LDAP)

On-premise email systems and gateways

Web proxy infrastructure

Data transfer platforms (NiFi)

Desktop administration (local, mobile, VDI, OS)

Bonus points if you have:

Experience as a PKI Local Registration Authority (LRA)

A knack for evaluating and deploying new enterprise technologies

Experience in 24/7 service environments

Experience networking in a data center environment

Why CSE?

At CSE, diversity and inclusion aren't just values—they're mission-critical. We thrive on different perspectives and believe that innovation comes from collaboration. You'll work in an open-minded, forward-thinking environment where your voice matters.

Whether you're a seasoned expert or an emerging talent, if you're driven by purpose and excited by challenge, you'll thrive here.

Be Part of Canada's Best-Kept Secret

Join us—and discover why CSE is the most important organization you've never heard of.


Rejoignez la mission : Façonnez l'avenir Très Secret au Canada

Prêt à travailler sur les systèmes informatiques les plus sécurisés et les plus stratégiques du pays? Le Centre de la sécurité des télécommunications (CST) s'engage à devenir le fournisseur national de services Très Secrets pour le gouvernement du Canada — et nous avons besoin de vous.

Nous recrutons des professionnels équivalents aux niveaux IT-01 à IT-04 pour rejoindre notre groupe d'Infrastructure Très Secret (ITS). C'est l'occasion de contribuer à une mission d'envergure nationale, où votre expertise aura un impact direct sur la sécurité et l'innovation.

Ce que vous ferez

Vous participerez à la conception, à la mise en œuvre et à la gestion des services d'entreprise Très Secrets. De la gestion des certificats à l'authentification, en passant par les outils de collaboration sécurisés — vous serez au cœur de l'action.

Vos responsabilités incluront :

L'infrastructure de gestion des clés publiques (PKI) et des certificats

Les systèmes d'authentification et d'autorisation

Les plateformes de communication et de collaboration d'entreprise

Les transferts de données sécurisés

Divers plateformes de transfers de données sécurisés

Ce que nous recherchons

Nous cherchons des personnes passionnées ayant de l'expérience dans un ou plusieurs des domaines suivants :

Mise en œuvre d'architectures PKI (ex. : Entrust, Microsoft CA)

Technologies d'authentification modernes (OAuth, FIDO2, Keycloak)

Services d'annuaires (Active Directory, LDAP)

Infrastructures de messagerie sur site (ex. : Serveur Exchange)

Infrastructures de proxy Web

Administration de postes informatique (local, mobile, VDI, OS)

Atouts supplémentaires :

Expérience en tant qu'autorité d'enregistrement locale (LRA) pour la PKI

Évaluation et déploiement de nouvelles technologies en milieu organisationnel

Expérience dans un environnement de services 24/7

Expérience en réseautique dans un environnement de centre de données

Pourquoi choisir le CST?

Au CST, l'équité, la diversité et l'inclusion ne sont pas que des principes — ce sont des piliers essentiels de notre mission. Nous valorisons les perspectives variées et croyons que l'innovation naît de la collaboration.

Que vous soyez un expert chevronné ou un talent émergent, si vous êtes motivé par un objectif clair et stimulé par les défis, vous trouverez votre place ici.

Faites partie du secret le mieux gardé du Canada

Rejoignez-nous — et découvrez pourquoi le CST est l'organisation la plus importante dont vous n'avez jamais entendu parler.


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