The phrase "a calling as a" is correct and usable in written English.
It can be used when describing a profession or vocation that someone feels strongly drawn to or passionate about.
Example: "She felt a calling as a teacher, dedicating her life to educating young minds."
Alternatives: "a vocation as a" or "a profession as a".
Cage might easily have found a calling as a purveyor of delicate exoticism.
Forty-plus years of newspapering haven't changed my view of journalism as a calling — as a public service — that requires sacrifices and special obligations.
Hisham had practised briefly as an architect but felt he had a "calling" as a novelist – and decided he would go to Paris.
The owner of a lumber company, a family man and a member of a Christian fellowship group, Mr. Courtney is a fascinating if finally elusive figure, a fatherless child himself who, for a spell, found a calling as a surrogate father.
While many of us may think of a calling as a call to serve a religious order, Levoy is referring to the aliveness we feel when there is a fit between who we are and what we do.
As an openly gay Mormon -- and one who just completed a calling as a priesthood leader in my congregation as my authentic self -- I'm keenly interested in how my Mormon fellows understand their LGBT brothers and sisters, and how they're beginning to act differently toward them.
The military is still a calling as much as a job.
I have a notion that science, on the other hand, is a calling as much as a job.
That is preposterous, but it was a line repeated when, calling as a parent, I contacted the office in charge.
The second multiple probe concerned the two participants with blindness and typical hearing who received a voice calling as a prompt.
Prosecutors started their case by calling as a witness Thomas Newkirk Thomas Newkirk, a U.S. Securities and Exchange Commission official who is, in effect, another prosecutor.
