IT Infrastructure Engineer

2 months, 2 weeks ago
Full-time
Senior
DevOps and Infrastructure
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

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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