engage as

engage (one) as (something)

To hire someone for a particular role or job. I thought they were just going to engage me as a file clerk, but because they needed help with data entry, I wound up doing that instead.
See also: engage
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

engage someone as something

to hire someone to serve as something. Yes, I engaged her as a secretary just last month. Will you engage me as a general troubleshooter?
See also: engage
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in classic literature ?
Hunt was joined by a person whom he had invited, by letter, to engage as a partner in the expedition.
Notwithstanding paragraph (a) of this section, a financial subsidiary may not engage as principal in the following activities: