Programming languages: Java, C/C++, C#(basic), Python(basic), Pascal/Delphi (basic), Assembler (basic)
Technologies:
Java 8:
• Java Standard Edition (OOP, Patterns, Collections, Streams, Optional, Regex, Lambda, multithreading, etc.)
• Java Enterprise Edition (Servlet, Filter, JSP, JSTL)
Build tools:
• Maven
• Gradle
Testing:
• JUnit
• Mockito
Logging: Apache log4J
VCS: Git
C/C++:
• STL
• Data structures
• Algorithms
• Multithreading
Database Management Systems: MySQL, PostgreSQL
Internet programming: HTML5, CSS3
OS: DOS, Windows 7, 10, Linux Ubuntu.