Roger Ellis, IT director at Blue Circle and chairman of Elite, a forum for top IT directors, has been made redundant. He will leave his desk on 29 February.
Ellis, who has spent 12 years at the multinational building materials supplier, was given just one month's notice, but is receiving substantial compensation.
The move comes as Blue Circle is fighting off a £3.4bn hostile takeover bid from French materials company Lafarge.
Ellis's role at Blue Circle will be taken over by Andrew Halstead, currently head of knowledge management, and the former European IT director at advertising agency Saatchi & Saatchi.
In recent years Ellis devoted much effort to sorting out the disparate IT systems of two major Blue Circle divisions which have now been sold. "The company appointed a head of knowledge management and a decision was made following the divestments that there was no need for a second senior position," said Ellis.
Speaking at last September's IT Director's Forum on the Oriana, Ellis said he was unsure of the degree of overlap between the IT director's post and the newly created job of head of knowledge management.