Linux System Administrator

Good day, We need someone with some of these quality. - good command of networking concepts and Linux network configuration (iptables, NAT, port forwarding, firewall); - file system concepts - Virtualization and containerization (KVM, XEN, VmWare, Vagrant – VirtualBox ), IT security compliance, system management/monitoring tools, operating systems services (DHCP, DNS, NTP, SNMP, SMTP, BGP, OSPF, VPN , etc ...) - Cloud technologies knowledge(Amazon AWS, SoftLayer anIBM Company, Oracle Cloud, OVH, SoYouStart, DigitalOcean, etc ...); - web applications technologies (Tomcat, Apache, NGINX, Redis, PHP - fpm, Memcache, etc...); - basic telecommunications concepts and protocols knowledge(SIP/RTP) ( Asterisk ) - version control systems (GIT, SVN, CVS) - database engines administration and optimization ( MySQL, MongoDB, PostGreSql, etc ...) - database administration application / installation / troubleshooting / support (Oracle 9i - 12g) - good knowledge of Windows Server (Hyper-V, Active Directory, Group Policy DNS, DHCP, File Server) - experience providing support in medium to large scale infrastructure environments - experience using ticketing systems - experience with backup software and strategies ( veeam, urlback, etc ) - familiar with RAID disk technologies & SAN infrastructure - familiar with network infrastructure - experience with log management tools (Elasticsearch, Logstash, Kibana, Splunk, Grafana ) and system monitoring tools and analyzing ( nagios, Cacti, ... ) - responsible for uptime, performance, reliability, scalability, security and high availability of infrastructure machines - troubleshoot performance issues, OS configuration and hardware failures and apply fixes - support incidents and perform root cause analysis for service interruption issues. Fix the root cause not the effect. - ensure compliance with security guidelines - create scripts in order to automate certain tasks ( scripting skills: bash, powershell, etc ... )