Greeshma Santhosh

Linux server administrator

Poornam Infovisison (Bobcares)

11.2020 - 02.2024

Provided technical support and assistance to over 3000 customers with Linux hosting environments, troubleshooting issues and resolving queries promptly
Managed the daily operations of the technical support helpdesk using a ticketing system, ensuring timely resolution of customer concerns
Collaborated with NOC team to resolve server-related issues, ensuring high availability and optimal performance
Utilized SSH, RDP, and other tools to manage Linux servers, perform system setups, security hardening, and maintenance tasks
Investigated and resolved server security issues such as spamming incidents, and blacklist issues, ensuring the integrity and reputation of server IPs
Implemented security measures, such as firewall configurations (cpHulk, ModSecurity, IP Tables, Immunify 360) and regular updates, to safeguard servers from threats
Automated backup and recovery procedures for shared servers using R1 Software backup tool along with custom scripts
Orchestrated the migration of 500+ client websites, emails, and content to new hosting environments, ensuring zero downtime and improving load times by 25% across all platforms
Monitored server performance over 600 servers using tools like Nagios and performed routine maintenance tasks
Responded to support requests at a rate of 50+ tickets daily from end users and patiently walked individuals through basic troubleshooting tasks
Managed scanning of 1000+ websites for possible malware and vulnerabilities with further cleaning and updates
Created internal support documentation in Confluence that enabled technical support team to extend skills and leverage system features using best practices up to 50%
Maintained and configured over 600 shared hosting servers based on cPanel/WHM as well as basic services: DNS Clusters (Bind, PowerDNS), Exim/Postfix mail servers
SSL - generating, installing, renewing, AutoSSL and Digicert certificates for customer's websites or internal portals
Assisted with SSL installation over 1000 client sites.

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