Senior System Specialist İş İlanı

As Turkiye's largest fitness community with our MAC/One, MACFit, MAC Studio and NuSpa brands, we are looking for a Senior Systems Specialist to join our IT team at our headquarters in Ortaköy, Istanbul. Being part of MAC means joining a community that continuously evolves, improves and moves towards a better life. Here, ideas matter, collaboration is encouraged, and feeling good is just as important as working effectively. If you want to be part of our wellbeing community and contribute to building and maintaining a reliable, secure and scalable technology infrastructure at MAC, we would love to hear from you. What We’re Looking For Bachelor’s degree in Computer Science, Information Technology, Engineering or a related field, At least 5 years of experience in systems administration, Hands-on experience managing Windows Server and Linux environments (RHEL/Ubuntu), Knowledge of Active Directory and/or Red Hat IDM, Hands-on experience with at least one virtualization platform such as VMware vSphere/vCenter or Nutanix AHV, Experience with backup and disaster recovery processes; Veeam experience is preferred, Experience with monitoring tools such as Zabbix, Grafana, PRTG or similar platforms, Knowledge of firewall, SSL/TLS, PKI and basic network security concepts, Basic knowledge of WAF, Load Balancers and MSSQL, Familiarity with vulnerability management and ISO 27001 / PCI-DSS processes, Ability to prepare and maintain technical documentation and runbooks, Strong analytical thinking, problem-solving and task management skills, Willingness to participate in on-call and shift-based support processes. What You’ll Do Manage the installation, configuration, patching and lifecycle management of Windows and Linux servers, Administer Active Directory / Red Hat IDM, DNS and DHCP environments, Support the operation, availability and continuity of the virtualization infrastructure, Manage backup and disaster recovery processes and support regular restore tests, Monitor system health, performance and alerts through centralized monitoring platforms, Provide technical support for firewall, certificate, WAF and Load Balancer processes, Support the remediation of vulnerability findings and technical requirements related to audit processes, Manage access-related processes and maintain accurate system inventories, Prepare, maintain and update technical documentation and runbooks, Monitor system alerts and perform the necessary interventions as part of on-call support rotations. Nice to Have Experience with Zabbix or Grafana, Familiarity with security and vulnerability management tools such as Nessus and Wazuh, Experience supporting ISO 27001 / PCI-DSS audits, CCNA, MCSE, Red Hat or similar technical certifications, Experience working with business-critical systems and infrastructure operating 24/7, Basic knowledge of AWS.