AD Specialist

Extelligence is an intelligent partner that goes the extra mile. We provide customized information management solutions for major industries. Our team in Prague and Bucharest is working with international companies, transforming, and adding value to their business on a daily basis. We are growing quickly, and we are interested to bring more talented individuals into our team.


  • Install, configure, and maintain Postfix mail servers on Linux systems.
  • Monitor server performance, troubleshoot issues, and perform system optimizations to ensure
  • reliable email delivery.
  • Implement and manage email security measures, including anti-spam, anti-virus, and authentication
  • mechanisms.
  • Configure and manage email accounts, aliases, mailing lists, and distribution groups.
  • Set up and maintain email backups and disaster recovery plans.
  • Collaborate with other IT teams to integrate email systems with other infrastructure components,
  • such as LDAP directories, DNS, and firewalls.
  • Provide technical support to end-users and resolve email-related issues in a timely manner.
  • Stay up-to-date with industry trends, best practices, and security vulnerabilities related to email
  • systems.


  • Linux System AdministrationPostfix Configuration and Administration
  • Email Security and Anti-Spam Techniques
  • Networking and TCP/IP Fundamentals
  • Scripting (e.g., Bash, Python) for Automation
  • Problem-Solving and Troubleshooting
  • Strong knowledge and expertise on Active Directory, Azure Active Directory/Entra ID and Okta
  • Active Directory synchronization
  • Strong knowledge of Single-Sign On and authentication protocols such as SAML & OIDC
  • Experience managing MFA providers such as Okta, Microsoft, RSA
  • Knowledge of Identity life cycle management processes
  • Experience managing enterprise cloud infrastructures in AWS, Azure, and Google cloud platforms
  • Strong knowledge of Active Directory attributes, LDAP Queries, Active Directory Federation Services (ADFS), Group Policy Object (GPO) analysis, configuration and item-level targeting, active directory replication, Active Directory backup and restore as well as certificate installation
  • Scripting experience in Python or Powershell. Preferably both

Hybrid: 2 days from the office

Working with Extelligence:

  • We take care of the important things that matter to contractors, for example, we guarantee on-time payment for your work. You will never have to chase us for payment.
  • We always seek to have long term relationships with our team and we always seek to offer opportunities to extend cooperation beyond the first contract or project.
  • Extelligence is a multicultural team, we have more than 15 different nationalities working with us.
  • We also organize events to bring our team together including team building activities and social events.
Job Type: Contract
Job Location: Czech Republic Hybrid in Prague

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