Алексе Могилин
Уверенно: Core Java, Servlets, EJB(jta, jms), CDI, JPA(Hibernate), Servlets, JSF(Majora), OLAP(mondrian), RDBMS(Oracle), jUnit ,Wildfly, GIT, Maven, JAX-RS/WS(Apache CXF), GC
Основы: Java concurrent, NIO, Spring(core, boot, test, statemachine), JSP, Jetty, Tomcat, Glassfish, Undertow, JMeter, Mockito, Selenium, Gradle, MAT, Linux, JS, CSS, HTML, WebSocket