Programming languages:

Java, C\C++, the .NET, Delphi, Flex, ASP, PHP, JavaScript, Python, Groovy, Scala, SQL, PL/SQL, PL/pgSQL.

Web platforms:

SpringMVC, GWT, GWT-Ext\GXT\SmartGWT, Vaadin, zKoss, JSP.

Unit testing tools:

Junit, TestNG, Stub/Mock Library (Mokito), Code Coverage Tool (Sonar), CppUnit, GoogleTest.

Assembly tools:

Ant, Maven, NSIS, RPM, make\cmake.

Continuous integration tools:

Jenkins, SVN, Nexys.

Testing tools:

Jira, TestLink.

Design and development support tools:

Visual Paradigm, Confluence, DocuWiki.

Development environments:

Eclipse, IntelliJ Idea, Visual Studio Microsoft, SonarQube.

Application servers:

Apache, Tomcat, Jboss, GlassFish.

ORM:

JPA, Hibernate, Cayenne, nHibernate.

OS:

Windows, Linux, QNX (including MSVS, AstraLinux), UNIX.

DBMS:

Oracle, MS SQL, the MySQL, PostgreSQL, Linter-VS, others

Network technologies:

TSRRL, ultra-short waves of radio communication, satellite communication networks, optic fiber lines