- Azure API Management- Azure Kubernetes Service- ArgoCD- GitHub Actions- Helm

- Azure Kubernetes Service- Continuous Integration, Continuous Delivery process for more then forty microservices and applications across five countries. Based on Azure DevOps pipelines, Helm charts and own bash scripts for preparing application configurations.- Helm/Helmfile- Docker/Docker Compose

- Linux servers administrator (CentOS7)- HAProxy - maintenance over thirty backends.- Monitoring - own bash monitorig scripts (Icinga2).- Automation of the Linux server patching process. (AWX, Ansible)- Automation of installation new LAMP applications using Ansible- Automation of deploying application source code from repository to server, based on GitHub webhook and own Python Flask micro-service.- GitHub, GitLab- Bash, Python

- Sun & RedHat cluster admin - (solaris zones and KVMs), maintaining of resources, disks adding/removing, patching, troubleshooting (performace, HW failures).- Solaris OpenStack admin (kernel zones) - maintaining of whole solution: ZS3 storage appliance cluster -> leaf switches -> management nodes -> compute nodes -> kernel zones. - Shell scripting - writing an automation process for disks migration from EMC to NetApp storage (Solaris Volume Manager icluded).

- RedHat servers maintenance- Solaris servers. (Solaris 8, 9, 10, 11) - cluster, local zones, LDOMs, physical-to-virtual migration (uar file and jumpstart), ZFS and UFS file systems (mirroring, replacement of faulted disks). - Troubleshooting - performance, hardware issue.- Shell scripting

- Servers maintenance (CentOS 6)- Monitoring (Zabbix)- Redis cluster maintenance- Chef automation implementation - Daily administrator business - user management, file systems (LVM), troubleshooting.

- Second support level for Linux (RedHat) and UNIX servers (AIX, HP-UX and Solaris).- Monitoring (Patrol).- Daily administrator business - user management, file systems (LVM), troubleshooting.