Java: knowledge of legacy versions (1.7 and 1.8) and Java 11 and later.
Angular: knowledge of version 14 and later.
Vue: a couple of applications use Vue for the front end (CF and FP). It uses TypeScript, so if you are familiar with this technology, it applies to both Vue and Angular.
JavaScript: minimum knowledge required for legacy applications.
JBOSS: knowledge of JBOSS servers (minimal; knowing how deployments work on this type of server is sufficient).
Maven: knowledge of version 3.5.0.
Node: basic knowledge of Node to install dependencies for each project.
Oracle SQL: knowledge of database queries in Oracle.
GIT: knowledge of GitHub/GitLab to manage repositories and branches.