Designing the technical architecture and application design.
Hadoop Architecture and HDFS
Java Map Reduce
HiveQL, Pig Latin scripts
Design, building and maintenance of logical and physical network structure, including routing and firewall configuration. Installation, operation, and maintenance of the Linux (Debian, CentOS, Gentoo. etc.) and Microsoft Windows (nt4 - 2012) based servers.
Design, development and implementation of the information security policies and backup strategies.
Building and maintenance of e-mail systems with spam and virus protection (Exim, Sendmail, Postfix, Dovecot, Amavis, Spamasassin, clamav, squirrelmail, Kerio Mail server, etc.).
Building and maintenance of routers and firewalls with filtering, proxying and separating traffic. Joining segmented heterogeneous networks. Building Virtual Private Networks (iptables, ipset, iproute2, bird, htbinit, cbqinit, squid, OpenVPN, Vtun, Pptpd, etc.).
Setup monitoring systems including integrity checking, intrusion detection, e-mail and SMS reporting, etc. (zabbix, nagios, tripwire, aide, logwatch, etc.).
Setup and administering various network services: DNS (bind, powerDNS), ssh, dhcp, ftp (pure-ftpd, proftpd, vs-ftpd), http (apache, nginx), mySQL, MSSQL, firebird, nfs, smb, Active Directory.
Setup and programming office hardware and software ATS (Multicom, Samsung, Asterix).
Setup various active and passive network hardwares: cisco firewalls, routers, switches, wi-fi access points, ADLS modems, etc.
Writing scripts, system automation utilities (command line and web based).