What do you call the person asking someone survey questions and recording that person's answers?

What do you call the person who completes a survey for another person?

Example:

John Doe goes to some supermarket and buys some food. Marie, who works at the quality assurance department of the supermarket, calls John and asks him a series of questions about the food he's just bought (a survey about the food).

In this case, Marie is filling out the survey in name of John about the food he bought. What should I call Marie?

Solution 1:

Marie, the person asking would be best known as

a canvasser

a person who tries to discover information or opinions by asking people:

• Canvassers surveyed people from over 2,500 households.
• He instructs canvassers on how to elicit honest information.

a questioner

a person who asks a question

possibly an inquirer or enquirer

someone who asks about something

Note that canvasser, questioner, inquirer (enquirer) have other meanings in different contexts.

For example,

a canvasser can also mean someone campaigning on behalf of a political candidate.

a questioner can mean a person who feels or expresses doubt about something.

an inquirer can mean someone that is involved in investigating incidents, e.g., a parliamentary inquiry into corruption

A good equivalent term to canvasser would be pollster as suggested by Lawrence in the answer to the What do you call a person who takes a survey? question pointed out by 1006a

a person whose job is to ask people their opinions on a subject, as part of a poll (= opinion study)

I agree with Lawrence when he points out that surveyor mentioned by OP in that question is not appropriate

To my knowledge surveyor refers to

A person who examines the condition of land and buildings professionally.

1.1 British An official inspector of something, especially for measurement and valuation purposes.

• ‘surveyors recorded the species and locations of fallen trees’

1.2 A person who investigates or examines something, especially boats for seaworthiness.

• ‘a marine surveyor’

Also, in my opinion, (limited experience) surveyee given as an alternative term for John's role in your question is not commonly used.

John would be known as a respondent

someone who responds to a question or offer:

• Most respondents in the survey voiced an unfavorable attitude toward the policy.

Solution 2:

a surveyor. vocabulary.com

someone who conducts a statistical survey

As in:

As a surveyor, Marie is conducting the questionnaire of John about the food he bought.