After finishing as one of the top rookies in the category, Ericsson turned his attentions to the All-Japan Formula Three Championship where he won the championship in his debut year. In 2010, he moved up to the GP2 Series where he secured one victory during his maiden campaign for Super Nova Racing. Between 2011 and 2012, Ericsson drove for iSport. Ericsson has recently completed the 2013 GP2 season with DAMS, and is now contracted by Caterham F1 to drive in the 2014 Formula One World Championship.
Ericsson drove for Brawn GP at the young driver test at Circuito de Jerez over three days, on 1–3 December 2009. He tested alongside IndyCar Series driver Mike Conway. Conway had the edge by three tenths of a second, however team principal Ross Brawn commended Ericsson for his performance, saying that he had "performed very well showing exceptional maturity in his approach and feedback".
It was announced on 21 November 2013 that Ericsson was a candidate to drive for the Caterham F1 Team in 2014 with Kamui Kobayashi as teammates. On 21 January 2014, the team announced that Ericsson and Kobayashi would be their race driver line up for the forthcoming season, with Robin Frijns as reserve.