In 1993, he entered the NFL with the Tampa Bay Buccaneers organization and would go on to spend 11 years with the franchise, first as a Pro Personnel Assistant, being elevated to Director of Football Administration in 1996, and became the Assistant General Manager in 2001. During his tenure, the Buccaneers would win their first Super Bowl championship in 2002.
After his tenure with the Buccaneers, he spent three seasons working as the Senior Director of Football Operations for the Arizona Cardinals organization.
Seattle Seahawks
Idzik joined the Seattle Seahawks organization on February 16, 2007. With Seattle, Idzik was in charge of overseeing player negotiations, the team's compliance with the NFL salary cap, player personnel transactions, all football operations budgets, staff and team contracts, and most aspects of the day-to-day football operations while also remaining active in player evaluations. During this time, he also served as the club's primary liaison to the NFL Office and represented the club at league meetings.
On January 24, 2013, the Jets named John Idzik the team's general manager. In his first season in 2013 as general manager, Idzik released linebacker Bart Scott, defensive backEric Smith, offensive lineman Jason Smith, and defensive tackleSione Pouha. In free agency, he added quarterback David Garrard, running backMike Goodson, offensive lineman Willie Colon, linebacker Antwan Barnes, and safety Dawan Landry. Prior to the 2013 NFL Draft, Idzik traded star cornerback Darrelle Revis to the Tampa Bay Buccaneers in exchange for their first round selection in the 2013 NFL Draft and a conditional pick in the 2014 NFL Draft. He also agreed to a trade with the New Orleans Saints to obtain running back Chris Ivory for a fourth round selection. His first draft class saw him select cornerback Dee Milliner with the 9th overall selection, Sheldon Richardson with the 13th overall selection, and Geno Smith with the 39th overall selection. Upon the drafting of Smith, Idzik also chose to release quarterback Tim Tebow on April 29, 2013. With the Jets making the change in quarterback to rookie Geno Smith, the team went 8–8 and finished second in the AFC East in Idzik's first season as general manager. During the 2014 offseason, Idzik released a number of players, including cornerback Antonio Cromartie, wide receiver Santonio Holmes, and quarterback Mark Sanchez. To replace Sanchez, Idzik added veteran quarterback Michael Vick, who previously worked in offensive coordinator Marty Mornhinweg's system with the Philadelphia Eagles. In addition to Vick, Idzik also signed former Seattle Seahawks offensive lineman Breno Giacomini and former Denver Broncos wide receiver Eric Decker. In April, Idzik saw an opportunity to bolster the offensive side of the ball by adding veteran running back Chris Johnson, formerly of the Tennessee Titans. The 2014 NFL Draft saw the Jets have 12 draft selections, including 18th overall selection safety Calvin Pryor and 49th overall selection tight endJace Amaro. Idzik addressed the wide receiver position with a trio of wide receivers, including Jalen Saunders and Shaquelle Evans in the 4th round and Quincy Enunwa in the 6th round. Saunders and Enunwa were subsequently cut from the team after the start of the season although Enunwa later returned to the active roster on December 27, 2014. During the 2014 season, Idzik received a large amount of criticism for the lack of talent he provided on the roster. As a result, a group of fans raised money to purchase billboards in New Jersey reading "Fire John Idzik" and passed out rally towels with the same message at select home games. A second group of fans flew a plane over the Jets practice facility with the same message. Idzik was fired on December 29, 2014 after two seasons with the team.
Jacksonville Jaguars
Idzik was hired as a salary cap consultant by the Jacksonville Jaguars on February 25, 2015.
