System administration – the expert in installing, supporting, and maintaining servers and other
computer systems, responding to service outages. Experienced in fault-tolerant and distributed
systems, virtualized environments.
Network administration – experienced in networking protocols, dynamic routing, firewalls,
DDoS-protection and mitigation, heterogeneous environment, directory services (LDAP,
Active Directory), VPN (OpenVPN), monitoring systems (Zabbix).
Database administration – experienced in installation, configuration and maintenance different
SQL servers (MS-SQL, MySQL, PostgreSQL), configuring database replication and backups.
Script Development – proficient in developing various system tools and utilities. Proficient in
different scripting languages (Bash/Perl/Python/sed/awk). Possess strong knowledge of scripting
and programming, software/project development life cycles (SDLC) for systems-related projects.
Skilled at developing system software (MIME, milter, network sockets) and Web-applications
(HTML, CSS, JavaScript, RESTfull, Mojolicious), database software (MySQL, PostgreSQL, SQLite, BerkeleyDB).
SQL development – experienced at developing stored procedures (T-SQL), SSIS packages and SSRS reports (MS-SQL).
IT-Infrastructure – proficient in designing and implementing fault-tolerant IT-infrastructure
from scratch through a distributed network and structure (multi-branch).
Server migration – confident in migrating existing servers and services into a virtualized
environment using various virtualization platforms (KVM, VMware, VirtualBox, OpenVZ, Hyper-V)
Knowledge Bases – expert in creating and managing knowledge Bases (wiki-based) (Twiki, Fosswiki, Docuwiki, TFS)
System Configuration – proficient in configuring various network services (DNS, DHCP, SMTP, IMAP,
Samba, FTP, NFS, LDAP, VPN, iptables). Experienced in creating deployment scripts and in using
specialized configuration management tools (Ansible).
