I'm linux engineer with experience in managing cloud infrastructure.Currently, I maintain approximately 300 physical servers and am responsible of virtualization (OpenStack & HKVMs (seperately)) and storage as a service (Ceph). Systems varying between CentOS 7, CentOS 8, and Rocky Linux 9, applications running with Docker/Podman. I'm well-versed in tasks automation, scripting, and building workflows with CI/CD tools. For server preparation, I'm well-acquainted with Ansible, have experience writing playbooks, roles, tasks, handlers, and templates. I have recently started implementing Puppet (basic configurations) to Ceph. For other automation tasks, such as cleanup and housekeeping scripts or server draining workflows, I'm familiarwith using Jenkins (Groovy + Bash scripts) and GitHub Actions.In terms of monitoring, I'm comfortable writing queries for Prometheus/Thanos, creating alerts for Alertmanager, and designing dashboards in Grafana.I'm also familiar with Infrastructure as Code (IaC) using Terraform with the OpenStack provider.Have involvement with MariaDB/MySQL (from troubleshooting to updating entries), RabbitMQ (from migrating clusters to different nodes to troubleshooting), HAProxy (endpoints creation, troubleshooting)I have experience in resource planning and capacity management, including determining how many servers can be decommissioned or replaced in lifecycle projects and forecasting future hardware needs.Projects Worth Mentioning:• Migrating Ceph to Rocky Linux 9 and Puppet (implementing genericconfigurations with Puppet).• Upgrading OpenStack, moving the platform from legacy versions(starting from Mitaka and upgrading through 7 versions).• Converting OpenStack to use the Kolla-Ansible project, effectivelycontainerizing the infrastructure and improving deploymentconsistency and scalability.• Migrating from ScaleIO to Ceph.• Building an OpenStack tier for testing (Sandcloud).