Ø B2 level in English language.
Ø European Certificate of Digital Literacy (ECDL).
Ø Friendly, cooperative, and communicative skills.
Ø MARC 21 (MAchine-Readable Cataloging) format for bibliographic data.
Ø RDA (Resource Description and Access) Toolkit.
Ø Library of Congress Classification System and Library of Congress Subject Headings.
Ø Greek language.