SUJITHKUMAR P

Executive IT (Server and Storage)

VVDN Technologies Pvt Ltd

09.2021 - Current

Technical support: Delivered comprehensive technical support for server and storage infrastructure, maintaining 99.9% uptime, and significantly improving service stability across development and production environments.
Server and VM management: Managed over 50 physical servers and 500 virtual machines (VMs) across multiple data centers, leveraging proactive monitoring tools such as Zabbix, Prometheus, and Nagios to reduce incident response time by 40%.
Linux administration: Deployed, configured, and maintained Linux environments (Ubuntu, Fedora, CentOS, Debian, RHEL), managing OS patching, upgrades, and automating tasks via Ansible, achieving 95% automation, and reducing manual efforts by 90%.
Virtualization management: Administered virtualization technologies, including KVM, Proxmox, and VMware, managing over 500 VMs, and optimizing resource utilization and workload distribution.
Storage management: Provisioned and managed storage solutions using LVM across 300+ VMs and 50+ physical servers, ensuring 99.99% data reliability.
RAID configuration and management: Implemented and maintained RAID levels (RAID 0, 1, 5, 10) to enhance data redundancy, performance, and fault tolerance.
NetApp storage administration: Configured and maintained NetApp storage systems in two data centers using NFS, SMB, and Fibre Channel (FC), boosting storage performance and reliability by 80%.
Root cause analysis (RCA): Conducted in-depth RCA and resolved performance bottlenecks and network issues, improving system stability by 30%.
Backup and disaster recovery (DR): Managed daily backup and DR operations for over 50 servers and more than 100 VMs using BorgBackup and Proxmox Backup Server, ensuring 100% SLA adherence.
Version control and service administration: Administered GitLab, Nextcloud, FTP, and SFTP, handling repository management, user access control, configuration, and service maintenance to ensure efficient and secure version control and file-sharing environments.
Web server hosting and security: Deployed and maintained Apache and Nginx web servers, implementing security headers, and Web Application Firewalls (WAF) to enhance web security and load balancing.
Vulnerability assessment and security monitoring: Conducted regular vulnerability assessments using Nessus, and centralized security monitoring via Wazuh and Seceon SIEM tools, improving security posture by 45%.
Time synchronization: Configured and maintained NTP servers to ensure consistent time synchronization across environments, essential for accurate logging, and security audits.
Protocol familiarity: Well-versed in networking and communication protocols such as DNS, FTP, SNMP, DHCP, TCP/IP, NFS, and SMB.
NOC operations: Led Network Operations Center activities, monitoring systems in real time, and resolving issues promptly to maintain network and system health.
Upgrade management: Executed hardware, OS, and firmware upgrades proactively, ensuring minimal disruption and up-to-date infrastructure.
Business continuity and disaster recovery (BCP/DR): Experienced in BCP and DR operations, including backups, data restoration, and recovery processes.

Summary

Overview

Work History

Executive IT (Server and Storage)

Education

Master of Computer Applications (MCA) - Computer Applications

B.Sc. - Computer Technology

Skills

Timeline

Executive IT (Server and Storage)

Master of Computer Applications (MCA) - Computer Applications

B.Sc. - Computer Technology

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