by profession
by training

In the same year, he became a writer by profession.

He is a lawyer by profession and has been on the council since 1999.

Both of his parents are high military officers by profession.

His wife is also a doctor by profession and they have four children.

He was an attorney by profession who took an interest in public policy.

By profession he was the manager of a building society.

She was a teacher by profession and taught until 1991.

That he was by profession a lawyer didn't seem to matter to the news media.

But even the scientists who stay up late by profession never quite get used to what they see.

A medical doctor by profession, he was club president for the years 1927 - 1936.