THAMMANNA SNEHA

• Administer and support enterprise Linux infrastructure across production datacentre environments, with hands-on responsibility for RHEL and CentOS servers. • Provision, configure, harden and maintain Linux servers and virtual infrastructure across RHEV, OpenStack and VMware environments. • Execute Linux OS patching, version upgrades, kernel parameter tuning and boot-level troubleshooting to maintain server stability and supportability. • Administer LVM, storage volumes, LUN-based storage domains and RAID-backed infrastructure to support enterprise workloads across virtualized environments. • Implement and maintain Linux firewall and iptables rules, troubleshoot network connectivity issues and manage server-side traffic filtering. • Develop and maintain Ansible automation for patching, software installation and repetitive Linux administration activities. • Support infrastructure workloads deployed on OpenStack with Ceph-based storage and manage server resources including RAM, vCPU and storage capacity. • Install, configure and troubleshoot enterprise middleware, database and supporting platforms including Oracle Database, JBoss, WebSphere, PostgreSQL, MongoDB, Redis, Kafka, Zookeeper, Kibana, Grafana and OpenJDK. • Diagnose and resolve Linux OS, application and infrastructure incidents, including boot failures, service issues and production-level system problems. • Perform security vulnerability remediation based on Qualys findings and support infrastructure security and compliance activities. • Monitor Linux and infrastructure environments using Zabbix, VMware vSphere and Mirantis, identifying operational issues and supporting incident resolution. • Perform infrastructure troubleshooting across OS, application, storage, networking and virtualization layers to restore production services and maintain system availability.

Estomi Technologies Pvt Ltd | Client: EdgeVerve Systems

Administer and support enterprise Linux infrastructure across production datacentre environments, primarily RHEL and CentOS servers. Provision, configure and maintain Linux servers and virtual infrastructure across RHEV, OpenStack and VMware environments. Perform OS patching, version upgrades, kernel parameter management and boot-level troubleshooting. Manage LVM, storage volumes, LUN-based storage domains and RAID-backed infrastructure. Configure and maintain Linux firewalls and iptables rules and troubleshoot network connectivity issues. Develop and maintain Ansible automation for patching, software installation and repetitive Linux administration activities. Support OpenStack workloads with Ceph-based storage and manage server resources including RAM, vCPU and storage. Troubleshoot Linux OS, application, storage, networking and virtualization issues in production environments. Perform security vulnerability remediation based on Qualys findings and monitor infrastructure using Zabbix, VMware vSphere and Mirantis.

Estomi Technologies Pvt Ltd

• Supported Linux server administration and production operations, including system monitoring, service checks, issue analysis and day-to-day infrastructure support. • Monitored Linux system health and resource utilization, reviewed system logs and supported troubleshooting of OS, service and application-related issues. • Assisted with Linux user/access administration, file-system checks, service management, routine maintenance and configuration activities in line with SOPs. • Supported Linux patching, incident-resolution activities and basic troubleshooting of CPU, memory, disk and service- related issues, coordinating with infrastructure teams when required. • Followed established operational procedures, SLAs and change controls while maintaining incident documentation and coordinating with internal support teams. • Performed process validation, task tracking and status reporting to support consistent service delivery and timely closure of operational activities.

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