We are seeking a Senior IT Administrator in Ukraine (Kyiv or remotely).
Main area of responsibilities is to manage and support the organization’s Microsoft infrastructure, Microsoft 365 environment, Dynamics 365 platforms, security services, and end-user technologies. The ideal candidate will have strong experience in Microsoft Entra ID, Active Directory, Microsoft 365 administration, Dynamics 365 environment management, endpoint security, and IT operations. This role requires excellent troubleshooting skills, a proactive mindset, and the ability to support both business users and technical teams.
Key Responsibilities * IT Administrator and maintain Windows Server and client operating systems across the organization. * Manage and troubleshoot network infrastructure, including Cisco ASA firewall configuration and maintenance. * Own identity and directory services, including Active Directory, Group Policy, and ADFS. * Administer the Microsoft 365 suite — Entra ID, Exchange Online, Intune, Teams, and license management. * Monitor and respond to endpoint security alerts using Microsoft Defender EDR, Sentinel One, or equivalent EDR/XDR platforms. * Administer and maintain Azure resources, including virtual machines, networking, storage, and core infrastructure services. * Deploy, manage, and optimize virtualized environments using Hyper-V. * Govern Power Platform environments, including Power Apps and Power Automate. * Perform SQL Server database administration, including backup/restore operations and T-SQL scripting. * Write and maintain PowerShell scripts to automate repetitive tasks and improve operational efficiency. * Troubleshoot issues across the stack — from user-facing problems to infrastructure-level incidents and see them through to resolution.
Required Skills & Experience
Technical Skills * Strong experience with Microsoft Entra ID and Active Directory. * Experience with Group Policy, ADFS, and hybrid identity solutions. * Microsoft 365 administration including Exchange Online, Teams, SharePoint Online, Intune, and licensing. * Experience supporting Dynamics 365 environments and Dynamics 365 Finance & Operations (F&O). * Knowledge of Azure administration and cloud infrastructure. * Networking fundamentals and Cisco ASA firewall administration. * Experience with endpoint security solutions such as Microsoft Defender or Sentinel One. * SQL Server administration including database backup/restore and T-SQL. * Power Platform administration (Power Apps, Power Automate, and related services). * PowerShell scripting and automation experience.
Preferred Experience * 5+ years of IT Administration experience. * Experience supporting enterprise Microsoft cloud environments. * Experience with DevOps user access and permissions management. * Development or software engineering background is considered a strong advantage.
Preferred Certifications * SC-300 — Microsoft Identity and Access Administrator * AZ-104 — Microsoft Azure Administrator * MS-102 — Microsoft 365 Administrator * Relevant Dynamics 365 or Power Platform certifications
Key Competencies * Strong troubleshooting and analytical skills. * Ability to work across infrastructure, cloud, security, and business applications. * Proactive and continuous learning mindset. * Strong communication and stakeholder management skills. * Ability to manage multiple priorities in a fast-paced environment.
What will you get if you join the SIS LLC team: * Collaboration with the teams from Ukraine, USA, Poland and India. * Flexible schedule. * Medical Insurance, * Bring your own device benefit, * 20 Paid Time Offs, 5 sick leaves, 10 public holidays. * Team activities online and offline.
