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IT Infrastructure Engineer

1 month, 3 weeks ago
Anywhere
Full-time
Senior
Infrastructure Engineer
DevOps and Infrastructure
Windows Server
Apply Now
Kyivstar

Kyivstar

Kyivstar is the leading national operator in Ukraine, providing quality mobile communication to over 26 million subscribers. As a driver of innovation and social responsibility, Kyivstar is part of the international VEON group, focusing on projects for...

Wireless Telecommunication Services
1K-5K
Founded 1994
$1600M raised
View All Jobs 27

Description

  • Lead the administration and evolution of Microsoft Active Directory in a complex enterprise environment.
  • Own Exchange and Exchange Hybrid environments, including on-premises and Exchange Online, to ensure reliability, security, and seamless coexistence.
  • Design, operate, and maintain Public Key Infrastructure (PKI), including certificate lifecycle management.
  • Administer and develop Microsoft 365 / Entra ID identity services, roles, and access models.
  • Implement and support ADFS / SSO and federation scenarios for internal and external applications.
  • Ensure secure access control, authentication, and authorization across platforms.
  • Collaborate with network, platform, and application teams on identity-related integrations.
  • Drive continuous improvement of identity and messaging architectures and operational practices.

Requirements

  • Strong hands-on expertise in Active Directory, including architecture, trusts, GPO, and troubleshooting.
  • Proven experience with Exchange on-premises and Exchange Hybrid.
  • Solid practical experience with PKI, including Root/Issuing CAs, templates, CRL, and OCSP.
  • Production experience with Microsoft 365 / Entra ID in hybrid environments.
  • Practical knowledge of ADFS / SSO, federation, and claims-based authentication.
  • Strong Windows Server background in enterprise environments.
  • Ability to work independently, take ownership, and act as a technical lead.
  • Intermediate or higher English proficiency.

Benefits

  • Office or remote work option.
  • Remote onboarding.
  • Performance bonuses, annual or quarterly depending on the role.
  • Access to learning through the company’s library, internal resources, and partner programs.
  • Health and life insurance.
  • Wellbeing program and corporate psychologist.
  • Reimbursement of Kyivstar mobile communication expenses.

Interested in this position?

Apply directly on the company website

Apply Now

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