Excellent programming skills in at least 2 modern programming languages/ frameworks, such as Node.JS, Go Lang, Elixir, Ruby on Rails, C, C++, Python, or others.
Excellent working knowledge of HTML/ CSS, and a modern frontend Javascript framework, such as ReactJS, AngularJS, EmberJS, Vue.js.
Excellent knowledge of SQL and one common database technology, such as Postgres, MySQL, MongoDB, Cassandra, CouchDB, HBase, Neo4J.
Infrastructure knowledge including RESTful APIs, Single Sign On, LDAP, Search Technologies.