The highly respected Nielsen was originally appointed at the start of this year, having had a lengthy career in grand prix racing at a number of teams including Lotus, Tyrrell, Benetton, Williams and AlphaTauri prior to working at Formula 1 management.
He worked closely with F1 race director Niels Wittich and took responsibility at the FIA for all sporting matters in F1, including the development of race control and the remote operations centre, as well as future updates to the sporting regulations.
