How to Say "collaborator" in Spanish
The Spanish word for “collaborator” is “colaborador” — B1 level. This is a very common word in everyday Spanish.

Examples
Él es un colaborador habitual de nuestra revista.
He is a regular contributor to our magazine.
Buscamos un nuevo colaborador para el equipo de diseño.
We are looking for a new collaborator for the design team.
Agradecemos a todos los colaboradores del proyecto.
We thank all the project's contributors.
The '-dor' ending
The ending '-dor' is just like '-er' in English (think 'worker' or 'player'). It turns a verb like 'colaborar' (to collaborate) into the person who does it: 'colaborador'.
A Positive Vibe
In English, 'collaborator' can sometimes mean someone who helps an enemy (a traitor). In Spanish, 'colaborador' is almost always positive and refers to helpful teammates or professional partners.
Using it for 'Partner'
Mistake: “Mi colaborador de negocios es Juan.”
Correction: Mi socio de negocios es Juan.
Related Translations
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