I installed lots of time Vtiger CRM for the customer. I am familiar from 3.0 Version and done a multi-time upgrade. I migrate Vtiger data from Windows to Linux platform. OTRS Helpdesk we installed and upgrade. Monitoring Implemented for more than 200 Server. Centrifuge installed for a customer. DevOps Works(python, Perl, Angular, Java, Jenkins, Selenium, Docker, Kubernetes, Ansible, Nagios, Chef, Puppet) Owncloud implementation with Onlyoffice. ELK implementation. Slack installed and configuration.