The word "background" does not seem to have an equivalent in Spanish. What would be the translation of the following phrases:
He has a background in computer science.
She has a background as a teacher.
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Sign up to join this communityIn that context, background means "conocimientos" or "experiencia".so "He has a background in computer science" can be translated to "Tiene conocimientos de informática".
I would say "to be experienced at (tener experiencia en)" or "to have a history (tener un historial)":
El tiene experiencia en ciencias de la computación. Ella tiene un historial como profesora.
The best word for this translation is "Trasfondo"
He has a background in computer science - "Él tiene un trasfondo en informática."
She has a background as a teacher - "Ella tiene un trasfondo como profesora."
Although options commented in other answers are also correct.