Senior Systems Engineer

Job Description Core Windows & Infrastructure Management

• Manage and support core Windows Server services, including Active Directory Domain Services (AD DS), DNS, DHCP, File/Print services, and IIS web publishing.
• Maintain physical server hardware and Hyper-V virtualization environments, handling resource allocation, system upgrades, and patch management.
• Oversee user administration and account access for Google Workspace. Linux & System Services
• Deploy, configure, and maintain production Ubuntu Linux servers hosting internal, custom, and line-of-business applications.
• Manage enterprise monitoring and logging tools, including Zabbix, Grafana, and Graylog .
• Maintain local Linux SMTP servers used by internal applications for automated email delivery, as well as external web hosting environments.
• Manage developer access and user permissions within Azure DevOps . Operations, Backup & Security
• Track system health, storage limits, and resource utilization to resolve performance bottlenecks and avoid downtime.
• Troubleshoot issues by analyzing application, kernel, and OS log files; take corrective actions and document preventive measures.
• Execute routine data backup processes, perform restoration tests, and maintain disaster recovery procedures across all systems.
• Manage Kaspersky Administration Server to enforce security policies, software updates, and scheduled virus scans across servers and workstations. Automation & Optimization
• Write and maintain custom scripts ( PowerShell, Bash ) to automate routine technical tasks and improve system efficiency. Job Requirements
• Education: Bachelor’s Degree in Computer Science, Information Systems, or equivalent practical experience.
• Experience: 5+ years of hands-on experience in system administration across both Windows and Linux (Ubuntu) environments.
• Technical Skills: o Solid expertise in Windows Server core infrastructure (Active Directory, DNS, DHCP, Hyper-V, IIS). o Hands-on experience maintaining Ubuntu Linux in production setups. o Experience with monitoring and logging platforms ( Zabbix, Grafana, Graylog ). o Knowledge of local email transport setups ( Linux SMTP ) and Google Workspace administration. o Familiarity with user access management in Azure DevOps . o Proficiency in operational scripting using PowerShell and Bash . o Practical knowledge of enterprise backup strategies and endpoint protection software (Kaspersky). Preferred Certifications
• Linux: Linux Foundation Certified System Administrator (LFCS) or Red Hat Certified System Administrator (RHCSA).
• Microsoft: Microsoft Certified: Windows Server Hybrid Administrator Associate or equivalent MCSA/MCSE credential.