Machine Learning Algorithms development
Mobile application development
Search solutions integration
Web development
E-Commerce solutions based on Intershop and ATG
IT Consulting

Algorithms, math computations, interpreters, ...
Application servers: Tomcat, JBoss, WebLogic, WebSphere
Databases: MySQL, Oracle, DB2, MongoDB, CassandraDB, ...
Open Source Projects: Spring, Hibernate, Solr, Netflix OSS ...
JS, NodeJS, ReactJS, ReactNative, Falcor, ...
Core Java/J2EE