Quinn will act as back-up quarterback to Russell Wilson.
Brady Quinn has agreed terms and signed with the Seattle Seahawks it was announced on Tuesday, as reported by NFL.com.
Quinn spent last season with the Kansas City Chiefs, and started eight games but threw eight interceptions and just two touchdowns.
He was also sacked 21 times in just 197 pass attempts, while compiling a record of 1-7. Despite the poor numbers from the last campaign, he was drafted in as the 22nd overall pick in the 2007 draft by the Cleveland Browns before starting nine games in 2009.
The 28-year-old emerged as the top solution for the Seahawks on Tuesday, after beating off competition from the likes of Matt Leinart, Seneca Wallace and Tyler Thigpen.
The four quarterbacks worked out for Seattle on Monday, with a view to one of them being picked as the back-up option to last year’s rookie star Russell Wilson.
The opening was created last week after the Seahawks dealt Matt Flynn to the Oakland Raiders, after he lost out to Wilson last year.
Reports had suggested that the franchise may have been interested in acquiring Tim Tebow from the New York Jets, however they have gone for Quinn in an area that needed strengthening ahead of the new season.
With the trade deals done in order to cover up the cracks, the Seahawks will now be looking ahead to the draft to further strengthen their roster.