Symonds will be part of the Sky F1 commentary team at a selection of races through the year as well as providing technical analysis.
He joined Williams in 2013 as chief technical officer but his departure was confirmed in December, making way for Paddy Lowe.
With so many technical changes for the 2017 season, Symonds joins the team to provide his insight and expertise at a good time.
He’s got a whole load of F1 experience following long stints at Benetton, Renault and then Williams.
His first race as part of the Sky F1 team will be the 2017 season-opening Australian Grand Prix.
Symonds joins a long list of expert pundits and analysts at Sky, including former drivers Johnny Herbert, Damon Hill, Paul di Resta and – of course – Martin Brundle.
Head of F1 at Sky Sports, Martin Turner, said:
“Pat will make a brilliant addition to our team, bringing a wealth of experience to Sky Sports F1. His knowledge, expertise and passion will add another dimension to our analysis and enhance the viewing experience for fans as they seek to understand the new cars and regulations. In this era of Formula 1 there is no-one better to explain it.”
It remains to be seen whether Symonds will pick up further F1 roles alongside his Sky commitments, following his exit from Williams.