For the 2001 season, Dyer moved to Scuderia Ferrari, working as Michael Schumacher's vehicle engineer, alongside Luca Baldisserri. By the end of 2002, Dyer engineered Schumacher at the tests, and after the championships had been won, at the last three races at Monza, Indianapolis and Suzuka. Dyer then race engineered Michael Schumacher to his 2003 and 2004 world titles, appearing with the German on the podium after his triumph at the 2003 Canadian Grand Prix. Dyer was quoted saying that 'One of Michael's strengths is that, apart from driving quickly, he has an understanding of the car and how all the systems work'.