by profession
by training

A lawyer by training, he was first elected to Parliament in 1980.

And they are hardly doing so by training under Francis's watch.

A lawyer by training, he joined the company in 1961 and worked his way up to become president of its record division.

He is a heart and chest surgeon by medical training.

An economist by training, he entered politics almost against his will.

That could be because many leaders of the field are not biologists by training.

A librarian by training, she could not find a job.

An economist by training, he is married, with three children.

He didn't have to be a cultural historian by training to know it.

By training, we've taken the step beyond just handing it out.