• C++, C, C#, Delphi, DropWizard, DynamoDB, Eclipse RCP/RAP, EJB, Eiffel, Elm
  • Java SE/EE (all Versions), JavaFX, JGraph, JAXB
  • JBoss, JCreator, JMS, JSP, JSF/Facelets, JMS Messaging, jMeter, Junit, JSON
  • Pascal, Perl, PHP, Prolog, Pony, PostgreSQL, Python 
  • Rational Suites, RDS, REST, Redis, Rust, Scala, Selenium, SolR/Lucene, Spring/SprintBoot, Swing
  • Test automatization (Cucumber, Mockito, TestContainers)
  • Unix Bash/Shell, Velocity, Visual Basic
  • Web (Angular, HTML, JavaScript, NextJS, React), Xerces, XML, XSLT, XStream, yFiles