Wildman parted company with Discovery in January, as exclusively revealed in Media Week, and will now become head of Screen, Ad2One's video ad network.
The appointment is part of a wider restructure at Ad2One that includes the creation of three new divisions and a creative arm. Ad2One will now split its portfolio of sites into categories: entertainment, food and drink and travel.
Hachette Filipacchi's James Dodd, who was advertising director across a number of magazines including Sugar, has been hired to head the entertainment division, which includes Last.fm, Discovery Channel and NME.com.
An internal promotion sees Mark Griffiths take over Ad2One's food and drink section, which includes Recipes.com and Delia Online. Meanwhile, Elliot Connor has been appointed group head of travel, looking after sites including Expedia and Lonely Planet.
Julian Miall, director at Ad2One, said that the restructure constitutes a "wholesale repositioning" of the network. He said that it was difficult for staff to know more than 30 sites in depth, hence the division into groups.
"There are increasing demands from clients and agencies for in-depth knowledge of sites," he said.
Ad2One has also set up a creative agency to run online advertising campaigns.