"acting position" is a correct and usable phrase in written English.
You could use it to refer to a job or role that someone is filling temporarily and likely in an informal capacity. For example, "The production team hired an experienced actor to fill the acting position until a permanent replacement could be found."
Nielsen's departure puts another key official in an acting position in Trump's Cabinet.
Although Dr. Cohen had earlier declined to serve as the college's full‐time president, he agreed to accept the acting position until a permanent president could be named.
Nedd, a longtime BLM employee appointed by Zinke to the acting position, asked to review and weigh in on FOIA requests that identified him specifically, Allen said, adding that he reported Nedd's request to Interior's deputy secretary.
Certainly Ford's perpetual grumpiness (it sometimes seems his default acting position), his curdled cynicism, put up barriers to feeling that suggest it is as disturbing for him as it is for the hunted Leon or Roy.
Edwin traveled to New York in 1898 where he interviewed for an acting position with the Shubert brothers, but his business acumen impressed the Shuberts more than his acting ability, and he was instead offered a position managing the Academy of Music Theatre in Milwaukee, Wisconsin (L. Thanhouser 1970, 11).
To investigate the axial dynamic buckling of the carbon nanotube numerically with an acceptable step length, a complex structure-preserving method that combines the precise integration method for the grids near the acting position of the excitation and the Preissman multi-symplectic scheme for other grids is proposed.
HARRIS: And do you believe that there will be any pause in the investigation during this interim period, where we have a number of people who are in acting positions of authority?
I'm encouraging my policy planning team and undersecretaries and assistant secretaries, those confirmed, as well as those in acting positions, to remain at their post and continue our mission at the State Department and working with the interagency process.
Even the acting assistant administrators have, in many cases, had to move on to new posts, having exceeded the allowable time in acting positions.
While Shah has skilled and capable leaders in his front office and throughout the agency, several of whom have been doing yeoman's work in acting positions, it is unconscionable that all remaining management seats remain unfilled 18 months into this administration.
Movie acting involves position in the frame as much as diction; distance from the camera as much as gestures; angles, light, costume, décor as much as expression.
