System Administrator

We are seeking a highly skilled and proactive System Administrator with over 4 years of hands-on experience in managing IT infrastructure, system performance, and security across multi-platform environments. The ideal candidate should have strong expertise in Windows and / or Linux systems, network configurations, cloud services, and troubleshooting enterprise-level issues.

Key Responsibilities :

• Manage, configure, and monitor Windows and Linux servers (on-premises and / or cloud).
• Maintain and upgrade system software and firmware on a regular basis.
• Apply OS patches and upgrades regularly, and upgrade administrative tools and utilities.
• Monitor system performance, availability, and capacity planning.
• Administer cloud environments (AWS / Azure / GCP).
• Manage virtual environments (VMware, Hyper-V, or similar platforms).
• Implement backup and disaster recovery plans using cloud and local tools.
• Ensure system security through firewalls, antivirus, patch management, and access controls.
• Conduct regular audits and vulnerability scans.
• Assist in compliance efforts (e.g., ISO, GDPR, SOC2, HIPAA depending on industry).
• Troubleshoot and resolve network issues including DNS, DHCP, VPN, routing, and firewalls.
• Manage network hardware (switches, routers, access points, etc.).
• Collaborate with Network Engineers on LAN / WAN deployments and performance tuning.
• Provide Level 2 / 3 support to internal users for hardware, software, and connectivity issues.
• Manage user accounts, permissions, and access rights in Active Directory or similar identity systems.
• Train and support junior team members and document processes.
• Use system monitoring tools (Nagios, Zabbix, SolarWinds, etc.) to track performance and incidents.
• Generate reports for uptime, usage, and anomalies.
• Maintain logs for audit and Skills & Qualifications :
• Bachelors degree in Computer Science, IT, or a related field (or equivalent experience).
• 4+ years of experience in System Administration.
• Strong knowledge of Windows Server and / or Linux OS administration.
• Experience with cloud platforms (AWS, Azure, GCP).
• Proficiency in scripting (PowerShell, Bash, or Python).
• Working knowledge of networking protocols and tools (TCP / IP, DNS, DHCP, VPN).
• Hands-on with Active Directory, Group Policy, DNS, DHCP, WSUS, etc.
• Familiarity with backup and recovery software and DR strategies.
• Solid understanding of ITIL processes (preferred).

Nice to Have :

ref : hirist.tech)