As a System Administrator at Azki, you will ensure the provisioning, configuration, operation, and maintenance of our Microsoft Windows and Linux infrastructures. With a major focus on Microsoft Exchange Server, you will drive the reliability, scalability, and security of our systems while contributing to continuous improvement and technical R&D efforts.Key ResponsibilitiesEnsure compliance with internal standards and operational requirements.Perform advanced administration, troubleshooting, and optimization of Microsoft Exchange Server (deployment, maintenance, performance tuning, and issue resolution).Manage core Microsoft infrastructure services: Active Directory, Group Policy, Certificate Services, DHCP, DNS, Remote Access, Failover Clustering, IIS, and WSUS.Develop and maintain PowerShell automation scripts for system maintenance tasks.Monitor system performance and availability; review logs and verify completion of scheduled jobs (e.g., backups).Administer Linux servers (Ubuntu, CentOS, Debian): configurations, patching, security hardening, and service management.Apply operating system updates and patches regularly; configure and deploy new services as needed.Design and support high-availability systems, clusters, and backup/disaster-recovery procedures; perform data recovery when necessary.Participate in a 24×7 on-call rotation for critical systems support (including evenings, weekends, and holidays).Required SkillsMinimum 3 years’ experience as a System Administrator or in a similar technical role.Expert-level hands-on experience with Microsoft Exchange Server (installation, upgrade, diagnostic, and troubleshooting).Proficiency with Windows Server ecosystem (AD, DNS, DHCP, GPO, etc.).Proven track record administering and troubleshooting Linux servers in production environments.Familiarity with virtualization technologies (VMware, Hyper-V).Solid understanding of storage systems (LUNs, iSCSI, NFS, etc.).Experience designing and supporting high-availability systems and clustering solutions.