Mr Ruddle will be the Telegraph's first podcast editor, and this is believed to be the first role of its kind at a major news organisation.
Mr Ruddle joined the BBC in 1990 and most recently presented Wake up to Monday on BBC Radio 5. His new role begins in January.
"Radio and sound has long been considered the most personal medium and the close relationship that the Daily Telegraph has with its readers makes it the perfect paper for the intimate nature of podcasting," said Mr Ruddle.
"This is a fantastic opportunity - one where I hope to be setting new standards for others to follow."
The Telegraph launched its daily podcast of selected news and sports pieces last month.
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