Grimshaw joined the FT in 1998 and held positions including client sales manager and head of client sales and key accounts.
His new role makes him responsible for co-ordinating all aspects of the FT's advertising strategy and operations worldwide.
Grimshaw will make sure that the sales teams work as efficiently as possible as well as being responsible for the key accounts programme globally.
Ben Hughes, worldwide advertising director, to whom Grimshaw will report, said: "The FT works with advertisers across all sectors and across the world. The complexity of its multimedia portfolio is steadily increasing and Rob will be managing this development."
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