System Administrator

📍Azroksan About the JobWe are looking for a skilled and proactive System Administrator to join our IT infrastructure team. The successful candidate will be responsible for managing, maintaining, and optimizing enterprise server and infrastructure environments, ensuring high availability, security, and operational continuity across the organization. The role requires strong technical expertise in Windows/Linux administration, virtualization, backup solutions, cloud services, automation, and enterprise infrastructure operations.Key ResponsibilitiesSystems AdministrationAdminister and maintain Windows Server environments including Active Directory, DNS, DHCP, Group Policy, IIS, and File Server services.Manage Linux systems including RHEL, CentOS, and Ubuntu environments.Maintain identity management, access control, and enterprise system configurations. Virtualization & InfrastructureDesign, deploy, and manage VMware infrastructure including ESXi, vCenter, HA, DRS, and vMotion.Ensure scalability, resource optimization, and high availability of virtual environments.Support infrastructure expansion, migrations, and system upgrades. Cloud & CollaborationAdminister Microsoft 365 services including Azure AD, Exchange Online, Teams, and SharePoint.Support hybrid identity integration, MFA, and Conditional Access policies.Maintain cloud connectivity and collaboration platform availability. Backup & Disaster RecoveryImplement and manage Veeam Backup & Replication solutions.Perform backup verification, restoration testing, and disaster recovery operations.Ensure compliance with RPO/RTO requirements and business continuity standards. Security & ComplianceApply system hardening standards using CIS benchmarks and Microsoft security baselines.Manage patch management, vulnerability remediation, and infrastructure security improvements.Ensure alignment with ISO 27001 and NIST security standards. Automation & ScriptingDevelop and maintain automation scripts using PowerShell, Bash, and Python.Automate provisioning, patching, monitoring, and reporting processes.Improve operational efficiency through infrastructure automation. Monitoring & PerformanceMonitor infrastructure health using tools such as Zabbix, PRTG, Nagios, or equivalent.Perform performance tuning, proactive issue detection, and capacity planning.Ensure infrastructure stability and service availability. Networking & IntegrationSupport network services including DNS, DHCP, TCP/IP, VLANs, and VPN technologies (IPSec/SSL VPN).Work with firewall concepts, network segmentation, DMZ environments, and access control policies.Collaborate with network and security teams for infrastructure integration. Database & Application SupportSupport PostgreSQL and MongoDB environments including backup consistency and performance monitoring.Assist with enterprise application deployments and infrastructure integration. Telephony SystemsManage VoIP/IP Telephony systems such as 3CX ensuring service availability and QoS optimization. Incident & Operations ManagementTroubleshoot complex infrastructure incidents within enterprise production environments.Perform root cause analysis (RCA) and implement preventive solutions.Support ITIL-based incident, problem, and change management processes.Maintain technical documentation including SOPs, runbooks, and infrastructure diagrams. Required QualificationsBachelor’s degree in Information Technology, Computer Science, System Engineering, or related field.Minimum 4+ years of experience in enterprise system administration.Practical experience handling production incidents and performance optimization.Scripting and automation skills using PowerShell (required), Bash and Python (preferred). Strong hands-on experience with: Windows Server (2016/2019/2022/2025)Active Directory, DNS, DHCP, Group PolicyLinux systems (RHEL/CentOS/Ubuntu)VMware infrastructure (ESXi, vCenter, HA, DRS) Proven experience with: Backup & Disaster Recovery solutions (Veeam preferred)Microsoft 365 and hybrid environmentsInfrastructure migration and upgrade projects Solid understanding of: Networking fundamentals (TCP/IP, DNS, DHCP, VLANs, VPN)System security and hardening practicesISO 27001 / NIST security standards Preferred QualificationsRelevant certifications such as Microsoft, VMware, Linux, or cloud certifications.Experience with monitoring tools such as Zabbix, PRTG, and Nagios.Familiarity with SIEM and log management solutions.Experience with SAN/NAS storage technologies.Experience with enterprise security and compliance frameworks. Soft SkillsStrong analytical and troubleshooting skills.Ability to work under pressure and manage critical incidents.Effective communication and teamwork abilities.Proactive, detail-oriented, and solution-oriented mindset.Strong organizational and documentation skills. Interested candidates should send their CV to the e-mail address in the Apply for job button with the subject line: “System Administrator”