The phrase 'opt for a position' is correct and usable in written English.
You can use it to refer to someone choosing a specific stance or option. For example, "The candidate opted for a more conservative position on immigration."
Hollande, who wanted to leave time for politics, opted for a position at the Cour des Comptes (court of auditors), leaving his allotted place as an inspecteur des impôts to his friend, with the promise of a plum job at the finance ministry.
After much deliberation I decided against opting for a position in the United States.
In both cases the thesis opts for a position that is abstracted from the spatio-temporal framework, and thus adopts the broadly Platonic view.
In this paper we opt for an intermediate position, so social contributions would be treated as a particular labour tax whose revenues are partially affected by social security financing.
Newly graduated Ph.D.s in those countries face a dilemma: Should I try to improve my scientific abilities by opting for a postdoc position abroad, or should I have to try to remain at the same university, even the same laboratory?
Advertisers opting for a First View position will essentially jump to the front of the queue in Twitter's ad network, getting the top ad spot the first time a person opens Twitter, for a period of 24 hours.
If you are entirely new to the industry you intend joining, you may wish to opt for an entry-level position that would provide a good induction to the industry.
Instead, opt for a comfortable and natural position.
A simple yet stylish hat will usually work great, as will a classy pair of boots[2] If you opt for jewelry, position the bling away from your scarf.
Henriquez had opted for a commercial research position after a postdoc contract in the U.K., partly in order to be able to work in his home country.
