The shock appointment comes just a month after new Telegraph boss Murdoch MacLennan conducted a cull of senior directors at the paper following a review of the business in his first three months in office.
Vanneck spearheaded the launch of the Sunday Times鈥 successful interactive CD-Rom, The Month, and has been at the forefront of a number of major deals for the paper.
The News International-lifer joins a raft of other new arrivals at the paper since MacLennan took over the hotseat in summer 2004, including Emap鈥檚 head of advertising Dave King, who replaced sales boss Chris White-Smith, and former-Orange supremo John Allwood.
First job for Vanneck will be to reposition the Telegraph鈥檚 marketing strategy, which is under review after the long-running Read a Bestseller Every Day campaign failed to drive up sales.
Vanneck said: 鈥淭his is a fantastic chance to join Britain鈥檚 market leading quality paper and is also a great career opportunity."
Mr MacLennan added: 鈥淜atie has real creative energy and has a proven track record in newspaper marketing. We look forward to her coming on board.鈥
Media agency Universal McCann won the buying account for the Telegraph in January 2003, while planning currently resides with strategic communications鈥 specialists Naked.
By Kevin May