• Administered Linux-based systems (RedHat, CentOS) in OpenStack, RedHat Virtualization, and VMware vCenter environments for high availability and performance.• Automated routine tasks and processes using Ansible playbooks, reducing manual interventions and improving efficiency.• Implemented and managed Linux security best practices, including SELinux policies, firewall configurations, and vulnerability assessments.• Managed patch deployments and kernel updates on Linux servers to ensure security compliance with minimal downtime.• Utilized TrueSight Monitoring for real-time system performance tracking, identifying issues before they impact operations.• Led physical server maintenance and conducted firmware upgrades on Dell and HPe servers to ensure hardware compatibility and performance.• Managed and optimized virtualized environments using VMware vCenter and RedHat Virtualization, ensuring system resilience and high availability.• Conducted regular system audits, including compliance checks and security assessments, generating detailed reports for management.• Led and coordinated infrastructure projects, mentoring junior admins and ensuring timely execution of tasks across cross-functional teams.

• Administered Linux servers and ensured 24/7 uptime through proactive monitoring and issue resolution.• Managed VMware ESXi clusters, performing VM provisioning, resource allocation, and hypervisor updates.• Coordinated firmware upgrades and hardware replacements in collaboration with vendors to maintain optimal performance.• Provided Tier-2 technical support, troubleshooting complex system issues, and resolving service tickets within SLA.• Implemented backup and disaster recovery protocols using tools like Veeam to ensure data availability and system redundancy.• Managed change requests and incident handling through ITSM tools like ServiceNow, minimizing impact on production environments.• Performed system patching and vulnerability remediation, applying security patches to close known exploits.