Senior System Administrator

System Administrator

IT Infrastructure & Enterprise Systems | Retail Operations

EXPERIENCE 4–6 years

Job Summary

We are seeking a skilled and proactive System Administrator with 4–6 years of experience to manage and maintain the organization's IT infrastructure, servers, virtualization platform, cloud services, storage, backup, endpoint management, and security systems. The ideal candidate will bring strong expertise in Windows Server administration, Active Directory, virtualization, networking, Google Workspace administration, endpoint security, and infrastructure monitoring.

This role is responsible for ensuring the high availability, security, performance, and reliability of IT systems supporting 600+ users across 200+ retail branches — a role clearly distinct from an IT Support Engineer, with ownership centered on infrastructure, servers, virtualization, security, backups, and enterprise systems administration.

Key Responsibilities

Server Administration

•    Install, configure, and maintain Windows Server environments

•    Manage Active Directory Domain Services (AD DS), DNS, DHCP, Group Policy (GPO), and File Services

•    Manage print servers and shared resources; monitor server health, performance, and capacity

•    Perform OS patching, security updates, and configure Remote Desktop Services (RDS)

•    Troubleshoot server performance/availability issues and maintain server documentation and inventory

Active Directory Administration

•    Create and manage user/computer accounts and Organizational Units (OUs)

•    Implement Group Policies, security groups, permissions, and password/account lockout policies

•    Manage shared folders and NTFS permissions; audit AD changes and security events

Virtualization

•    Install and administer VMware ESXi or Microsoft Hyper-V

•    Create and manage virtual machines; allocate CPU, RAM, and storage resources

•    Perform VM migration, cloning, and snapshot management; monitor performance and maintain high availability

Google Workspace Administration

•    Manage the Google Workspace Admin Console, including Gmail, Drive, Meet, and Calendar

•    Administer Shared Drives, Google Groups, organizational units, and policies

•    Implement 2-Step Verification (2FA), monitor storage/licenses, and support Google Endpoint Management

•    Troubleshoot email delivery/sync issues and manage user onboarding and offboarding

Storage Management

•    Manage NAS/SAN storage, shared folders, and RAID configurations

•    Monitor storage utilization and disk health; implement quotas and plan storage expansion

Backup & Disaster Recovery

•    Configure, monitor, and test backup and restoration solutions

•    Verify backup integrity, maintain retention policies, and support DR planning and documentation

Endpoint Management & Security

•    Deploy and manage Windows endpoints, OS/application installs, and software deployment

•    Configure endpoint security policies and BitLocker encryption; maintain compliance

•    Deploy/manage endpoint protection, monitor antivirus health and security alerts, investigate malware

•    Coordinate vulnerability remediation and support remote users

Network & Firewall Administration

•    Configure and troubleshoot LAN/WAN, managed switches, wireless infrastructure, and VPN access

•    Coordinate ISP connectivity and support SD-WAN deployments

•    Configure firewall policies, NAT, web filtering, application control, IPS, and SSL VPN

•    Monitor firewall/security logs and support firewall upgrades

Monitoring, Asset Management & Documentation

•    Monitor servers, storage, and network devices; analyze utilization and generate health reports

•    Maintain server/software inventory, warranties, licensing records, and the CMDB

•    Maintain infrastructure diagrams, network diagrams, SOPs, and change records

•    Coordinate with hardware vendors, manage AMC activities, and escalate critical issues

Required Technical Skills

Operating Systems

• Windows Server 2016/2019/2022
• Windows 10/11
• Linux (Ubuntu/CentOS – Basic to Intermediate)

Server Technologies

• Active Directory
• DNS / DHCP
• Group Policy
• File & Print Server
• Remote Desktop Services (RDS)
• WSUS

Virtualization

• VMware ESXi
• VMware vCenter
• Microsoft Hyper-V

Cloud & Collaboration

• Google Workspace Admin Console
• Google Endpoint Management
• Gmail / Drive / Meet
• Google Groups & Shared Drives
• Google Vault (Basic)

Networking

• TCP/IP, VLANs
• VPN / NAT
• LAN/WAN
• Managed Switches
• Wireless Networking
• SD-WAN (Basic)

Firewall

• FortiGate (Preferred)
• Sophos Firewall
• SonicWall

Storage & Backup

• NAS/SAN
• Storage
• RAID
• Veeam Backup
• Windows Server Backup
• Synology/QNAP NAS (Preferred)

Security

• Antivirus/EDR Solutions
• BitLocker
• Multi-Factor Authentication (MFA)
• Vulnerability Management
• Security Patch Management
• Endpoint Compliance

Monitoring & ITSM Tools

• PRTG
• Zabbix
• ManageEngine OpManager
• Nagios (Preferred)
• ManageEngine ServiceDesk Plus
• Freshservice / Jira SM
• ServiceNow

Preferred Experience

Candidates with hands-on experience in the following environments will be preferred:

•    Multi-branch retail organizations (100+ branches)

•    Managing 500+ users across distributed locations

•    Google Workspace administration at scale

•    FortiGate firewall configuration and management

•    VMware or Hyper-V virtualization environments

•    NAS/SAN storage administration

•    Backup and Disaster Recovery solution design and execution

•    ITIL-based IT operations and service management

•    Endpoint management and security tooling

•    Infrastructure monitoring and capacity planning

Soft Skills

•    Strong analytical and troubleshooting skills

•    Excellent communication and interpersonal skills

•    Customer-focused approach

•    Ability to prioritize multiple tasks under pressure

•    Good documentation practices

•    Team collaboration and mentoring ability

•    Strong sense of ownership and accountability