Following graduation from the Culinary Institute of America in 1989, Freitag took a position at Vong New York working under chef Jean-Georges Vongerichten. In 1994, she left Vong to cook at Verbena, under chef Diane Forley. After Verbena, Freitag traveled to France and Italy, working for a short while at L'Arpège restaurant under chef Alain Passard in 1999.
In 2003 Amanda teamed up with legendary restaurateur Godfrey Polistina (Carmine's, Ouest, Virgil's BBQ) to start the popular upper west side restaurant Cesca Enoteca & Trattoria.
More recently, Freitag has served at several high profile New York restaurants. She was chef de cuisine at Cesca, before moving to an executive chef position at The Harrison. On September 3, 2010, The New York Times reported that Freitag would be leaving the Harrison, and the restaurant's owner, Jimmy Bradley, will return as chef.
Freitag is a frequent judge on the culinary game show Chopped. She battled Bobby Flay on Iron Chef America in “Battle: King Crab”. She narrowly lost, with a score of 49 against Flay's 50 points. The judging was evenly matched, with the exception of Freitag having earned one point fewer in the "taste" category.
On October 16, 2009, Freitag appeared on the The Martha Stewart Show and demonstrated recipes for yogurt panna cotta and celery root and ginger gold apple soup.
Freitag competed in The Next Iron Chef Season 2, finishing in fourth place. Freitag stated she would continue as a judge on Chopped for the 2010 season and she returned for the season four episode "Against the Tide".
^Rosenblum, Dan. "What's Amanda Freitag's secret ingredient? A dash of Cedar Grove", Verona-Cedar Grove Times, May 25, 2013. Accessed September 22, 2013. "However, her first taste in the cooking profession happened at Memorial High School (now Cedar Grove High School), when Freitag's home economics teacher told her about the Culinary Institute of America in Hyde Park, N.Y."