system administrator

توضیحات آگهی

The System Administrator is responsible for maintaining and optimizing enterprise IT infrastructure by monitoring system performance resolving incidents ensuring service reliability and implementing operational improvements This role requires strong expertise in systems administration networking virtualization security practices and proactive problem solving in a high availability environment Responsibilities Continuously monitor network and system performance using specialized monitoring tools to ensure high availability and reliability Detect troubleshoot and respond to incidents in real time to minimize service disruptions and downtime Identify potential issues proactively before they escalate into critical incidents Diagnose and resolve network hardware and software issues promptly and effectively Collaborate with cross functional technical teams to escalate complex issues and ensure timely resolution Maintain detailed documentation of troubleshooting steps solutions and system configurations for future reference Work closely with IT teams vendors and third party service providers to ensure smooth operation and support continuity Communicate incident statuses resolutions and performance reports to relevant stakeholders Generate and analyze regular reports on system performance incidents and downtime for management review Ensure incident logs reports and documentation are accurate comprehensive and compliant with company policies Participate in 24 7 shift rotations and provide on call support for emergency incidents Contribute to continuous improvement of monitoring systems alert mechanisms and performance dashboards Experience Proven experience as a System Administrator Network Administrator or similar technical role Experience managing large scale mission critical infrastructure in 24 7 operational environments Demonstrated ability to manage incident response troubleshooting and performance monitoring Requirements Proficiency in configuring administering and troubleshooting enterprise monitoring tools such as Zabbix Grafana Prometheus and ELK Stack Strong understanding of network protocols and services including TCP IP DNS HTTP HTTPS BGP OSPF SNMP NetFlow NTP VPN and Syslog Expertise in Windows Server and Linux operating systems including installation configuration patching performance tuning maintenance and troubleshooting Hands on experience with virtualization platforms especially VMware vSphere and ESXi including VM provisioning clustering resource allocation snapshots and high availability configurations Knowledge of operating system hardening and security best practices for Windows and Linux environments including access control service minimization patch management secure configurations log auditing and compliance with security baselines Experience with Docker and containerized environments including deployment maintenance and basic container orchestration concepts Ability to build customize and maintain monitoring dashboards alerting rules service checks and performance capacity reports Strong diagnostic analytical and problem solving skills for identifying and resolving system application and infrastructure bottlenecks Familiarity with automation tools and scripting for system administration tasks such as Bash PowerShell and Python Experience with backup restore and disaster recovery planning and administration for servers virtual machines and critical services Familiarity with Active Directory Group Policy DNS DHCP file services and identity access management in enterprise environments Understanding of storage technologies and concepts including RAID SAN NAS iSCSI and storage performance monitoring Knowledge of firewall concepts endpoint server security controls vulnerability remediation and general infrastructure security practices Ability to document system architecture operational procedures incident resolutions and change management activities Excellent communication skills for collaborating across teams and providing clear updates to stakeholders تهران تهران ظفر تمام وقت گروه مالی کارآمد کارشناس جنسیت تفاوتی ندارد سرمایه گذاری و مالی