Senior System Administrator

Job Title – Senior System Administrator

Location: Madurai

Experience: 3-5 years

Role Overview

We are seeking an experienced System Administrator with strong expertise in enterprise IT infrastructure, cloud platforms, and endpoint management. This role requires hands-on experience in managing on-premises and cloud systems, ensuring security and availability, and supporting business continuity through proactive monitoring, configuration, and incident resolution.

Key Responsibilities

• Infrastructure & Cloud Management
• Manage and monitor servers, storage, and networks across on-premises and cloud (Azure / O365 / other cloud environments).
• Administer Office 365 services including Exchange Online, SharePoint, Teams, OneDrive, and licensing.
• Perform user migration and mailbox management between tenants and environments.
• Security & Access Control
• Configure and maintain firewall policies, VPNs, and VLANs for secure and optimized access.
• Implement and monitor endpoint security (antivirus, DLP, EDR/XDR) across the organization.
• Manage Active Directory (AD), Azure AD, and Group Policy Objects (GPOs) for access control, security compliance, and user provisioning.
• Network & System Administration
• Configure and manage LAN, WAN, VLANs, and VPN connections for seamless connectivity.
• Troubleshoot networking issues, internet downtime, login failures, and folder access issues .
• Ensure high availability and performance of file servers, application servers, and database servers .
• Endpoint & Remote Work Support
• Oversee endpoint management using MDM/Endpoint Central/Intune for patching, updates, and compliance.
• Provide technical support for end-users including remote workers (login, access, VPN, printers, system issues).
• Maintain IT asset lifecycle including allocation, upgrades, and decommissioning.
• Backup & Disaster Recovery
• Manage backup schedules (full, incremental, differential) and validate recovery procedures.
• Ensure business continuity through tested disaster recovery plans.
• Documentation & Compliance
• Maintain detailed documentation of infrastructure, policies, incidents, and resolutions .
• Support internal audits and compliance frameworks (SOC, ISO, GDPR).

What We Expect

• Technical Expertise
• Strong knowledge of Windows, Linux, and macOS operating systems.
• Hands-on experience with O365 administration, cloud environments, and Active Directory .
• Proficiency in firewall configuration (policies, NAT, VPN) and network segmentation (VLANs) .
• Experience in endpoint management (patching, antivirus, MDM, Intune/Endpoint Central).
• Knowledge of backup strategies, disaster recovery, and system migrations .
• Networking & Security
• Solid understanding of IP addressing, DNS, DHCP, and routing concepts .
• Ability to troubleshoot LAN/WAN/VPN/firewall issues .
• Knowledge of security best practices including patch management and monitoring.
• Problem-Solving & Support
• Skilled in troubleshooting system errors, login failures, and access issues .
• Ability to handle user escalations with patience and clear communication .
• Proactive in identifying and resolving potential system bottlenecks or risks.
• Soft Skills & Growth
• Strong communication skills to explain technical concepts in simple terms.
• Ability to document processes, SOPs, and incident reports clearly.
• Willingness to learn new technologies and grow with evolving IT trends.