I'm a Remote/telecommute Administrator of Linux/Unix(AIX/FreeBSD)/MySQL/Oracle/Network/VOIP servers and services. Security admin and developer. It like's for me interest to seeking some problems in systems based on Linux, because system helpful toolkits, scripts and strong Linux architecture is allow to do troubleshooting very clearly. -Expert knowledge of Linux Operating System like Debian-based, RPM-based distributions, SuSe and Slackware. -Expert knowledge of Unix/BSD operating systems look like: FreeBSD/OpenBSD -Knowledge of Intenet mail and dns services like as: Postfix/Sendmail/Exim/Zimbra/Bind -Knowledge of web servers: Apache Web server: PHP configuration/Virtual hosting/Nginx/Lighthttpd/php-fpm/fastcgi/unicorn(ROR)/htaccess -Knowledge of high availibility and clusterization of services Pacemaker/Linux-HA/Corosync/Ha-Proxy/Heartbeat/Lvs/Ipvs/Keepalived and cluster filesystems: Gfs/Glusterfs; Drbd storages; -Experience of working with virtual machines based on OpenVZ/Libvirt-Qemu-KVM/XEN/VMware ESX hypervisors -Cloud-based managing services and operating systems: Proxmox/Op­enStack/CloudLinux -Knowledge of monitoring(Zabbix/Nagios/Cacti), backup(Linux toolkits/Bacula), system control tools. -Experience of working in a production environment -TCP/UDP/ICMP/SMTP/POP3/IMAP/HTTP/FTP/TFTP/SMB across of tcp/ip stack protocols and OSI model -Netflow/Snort/Netams/Routing(routed/gated/Quagga)/Swi­tching/Vlans/Bonding/Nat/Samba/Nfs/OpenVPN/Pptp/L2tp/Ppoe services -Asterisk/OpenSIPS/OpenSer/FreeSwitch RDBMS: MySQL(and forks:PerconaXDB Cluster/MariaDB)/Ingres/Pos­tgreSQL/Oracle 10/11g and RAC -Knowledge of various SQL -Scripting languages: Bash, Python, Perl -ANSI/GNU C (Well known of network tcp/ip stack programming and system services development) Kernel structure/subsys­tems/system calls/stdlib­s/glibc/gcc/gdb -LVM/Raid massive managing/OpenLDAP/Firewall(