2+ Application server Jobs in Chennai | Application server Job openings in Chennai

Job Summary

We are seeking an experienced Senior System Administrator responsible for managing and maintaining the organisation’s IT infrastructure, including Windows and Linux servers, network devices, security systems, storage solutions, and enterprise applications. The role ensures high availability, security, and performance of all IT systems while supporting business operations.

Key Responsibilities

Server Administration

• Install, configure, and maintain Windows Server environments (Active Directory, DNS, DHCP, Group Policy).
• Manage and maintain Linux machines for application hosting and system services.
• Administer and maintain Application Servers supporting internal business applications.
• Manage and maintain Biometric Servers used for employee attendance and access control systems.
• Monitor server health, performance, and system logs.
• Perform system updates, patches, and security hardening.

Storage and File Services

• Manage and maintain Samba File Servers for shared storage and user access.
• Administer NAS storage systems (Synology), including storage allocation, access permissions, and performance monitoring.
• Ensure proper storage utilisation and secure data access.

Network Infrastructure Management

• Configure and manage Sophos Firewall, including firewall rules, NAT policies, VPN configuration, and threat protection.
• Configure and maintain Cisco and Netgear switches, including VLAN configuration and network segmentation.
• Manage and maintain wireless access points to ensure reliable and secure Wi-Fi connectivity.
• Monitor network performance and troubleshoot connectivity issues.

Proxy and Security Management

• Install, configure, and maintain Proxy Servers for internet access control and monitoring.
• Monitor firewall logs, network security alerts, and implement security policies.
• Ensure network infrastructure is protected against unauthorised access and threats.

Backup and Disaster Recovery

• Implement and manage backup and restore solutions for servers, NAS, and critical business data.
• Perform periodic backup verification and disaster recovery testing.
• Ensure backup policies and schedules are properly maintained.

Power and Infrastructure Management

• Monitor and maintain UPS systems to ensure an uninterrupted power supply for servers and network infrastructure.
• Coordinate with vendors for UPS maintenance, battery replacement, and power infrastructure reliability.

System Monitoring and Troubleshooting

• Proactively monitor servers, network devices, storage systems, and applications.
• Troubleshoot and resolve system, network, and application-related issues.
• Maintain proper documentation of infrastructure configurations and procedures.

Vendor and Infrastructure Coordination

• Coordinate with vendors for hardware procurement, infrastructure support, and service management.
• Plan and implement infrastructure upgrades and improvements.

Required Skills

• Strong experience with Windows Server Administration
• Good knowledge of Linux System Management
• Experience with Sophos Firewall
• Knowledge of Cisco and Netgear networking devices
• Experience with NAS storage (Synology) and Samba File Server
• Experience managing Application Servers and Biometric Systems
• Experience with Backup and Disaster Recovery
• Understanding of network security and monitoring

We are hiring candidates who are looking to work in a cloud environment and ready to learn and adapt to the evolving technologies.

Linux Administrator Roles &  Responsibilities:

• 5+ or more years of professional experience with strong working expertise in Agile environments
• Deep knowledge in managing Linux servers.
• Managing Windows servers(Not Mandatory).
• Manage Web servers (Apache, Nginx).
• Manage Application servers.
• Strong background & experience in any one scripting language (Bash, Python)
• Manage firewall rules.
• Perform root cause analysis for production errors.
• Basic administration of MySQL, MSSQL.
• Ready to learn and adapt to business requirements.
• Manage information security controls with best practises and processes.
• Support business requirements beyond working hours.
• Ensuring highest uptimes of the services.
• Monitoring resource usages.

Skills/Requirements

• Bachelor’s Degree or Diploma in Computer Science, Engineering, Software Engineering or a relevant field.
• Experience with Linux-based infrastructures, Linux/Unix administration.
• Knowledge in managing databases such as My SQL, MS SQL.
• Knowledge of scripting languages such as Python, Bash.
• Knowledge in open-source technologies and cloud services like AWS, Azure is a plus. Candidates willing to learn will be preferred.
• Experience in managing web applications.
• Problem-solving attitude.
• 5+ years experience in the IT industry.