* Managing numerous servers and network hardware. Mostly FreeBSD-based web-servers. * Implementing monitoring systems.* Implementing Rsync-based in-house backup system. * Training team of system administrators for 24*7 monitoring and problem solving.* Datacenter communication and remote hardware problems diagnostics. * Designing and implementing outer and inner infrastructure security scheme. Setting-up aggressive front-end firewalls as well as implementing in-house collaboration system: e-mail + jabber + collab tool + svn on non-existent domain in grey vpn network* Urgent problem solving and application moving due to datacenter failure* Implementing of failover and cluster infrastructure in order to achieve high uptime of applications* System hardening and testing for basic sql and xss attacks (Nessus, Nikto, XSSer. Etc.)* PCI DSS implementation, testing procedures, data management* Remote-managed terminal-like systems setup, data security and remote workplace environment setup* In-house intrusion detection system development and implementation* Server-side tuning for pay-per-click web-infrastructure* Personal data security solution design and implementation* High-load infrastructure design and implementation* Video-advertising “digital signage”-like system design and implementation* Implementing and securing company Voip infrastructure

* Day to day clients problems solving* Monitoring servers stability and assuring normal work of all servers and clients sites* Setting up new web hosting servers* Tweaking billing systems (WHMCS, Modernbill)* Tweaking and securing cPanel hosting panel* Remote server problems diagnostics and solving* Datacenter communication* Custom server setup for clients* Training new staff* New monitoring sub-systems implementing* PowerDNS (Instead of bind) dns cluster system design and implementation* Custom cPanel tweaks and scripts*Ddos mitigation and prevention* Design of automated scripts to prevent resource abuse of the servers

* Day to day clients problems solving* Monitoring servers stability and assuring normal work of all servers and clients sites* Setting up new web hosting servers* Tweaking billing systems (WHMCS, Modernbill)* Tweaking and securing cPanel hosting panel* Remote server problems diagnostics and solving* Datacenter communication* Custom server setup for clients* Training new staff* New monitoring sub-systems implementing* PowerDNS (Instead of bind) dns cluster system design and implementation* Custom cPanel tweaks and scripts*Ddos mitigation and prevention* Design of automated scripts to prevent resource abuse of the servers

* Web server setup and optimization* Numerous game-servers setup and optimization* Web hosting in-house infrastructure design and implementation* In-house network monitoring tool (500+ D-link switches, 50+ servers) design and implementation, perl-mysql backend + php web-interface, implementing snmp as well* Hardware and software server problems diagnostics and solving* Staff training and documentation writing

* Main billing server setup and hardening* Custom additional billing system tweaks and scripts* Basic servers monitoring system design and implementation (ping + e-mail)* Re-writing part of billing system (perl) implementing basic traffic shaping capabilities with FreeBSD ipfw pipes

* Basic windows and linux system administration* Internal technical support* Hardware problems diagnostics and solving* Implementation and maintenance of basic security measures