Learn English – a word to describe someone in another organization which you collaborate with

generic-termsingle-word-requeststerminology

So basically, if I were to say something like 'That guy working on behalf of organization x, has said that he would relay information within 3 working days', what would be a word or term for 'that guy working in/for organization x'?

At first I thought the term 'party' would be appropriate, but when looking up it's definition, it's defined only for political parties (and frat boy parties xD). Furthermore, there seems to be many terms to describe those working in the same organization as one's own, the most formal I can think of being colleague, but none that seem to describe those working as part of another organization that one's own organization is collaborating with.

Best Answer

You might call this person your PoC, or Point of Contact:

A point of contact (POC) or single point of contact (SPOC) is a person or a department serving as the coordinator or focal point of information concerning an activity or program. A POC is used in many cases where information is time-sensitive and accuracy is important.