Early in her career, Kalogridis wrote a spec script about
Joan of Arc titled
In Nomine Dei. She sold the script to
Warner Bros. in April 1994, but a film was not produced. In March 1995, she was a writer of the early script for the 2000
X-Men film. In late 1999, she did uncredited work on the script for
Scream 3. In September 2000, she was hired to write the screenplay for the 2001 film adaptation of
Lara Croft: Tomb Raider. Kalogridis created, executive produced and wrote multiple episodes of the 2002 series
Birds of Prey. In September 2003, she was involved in the rewrite of the
Wonder Woman live action film adaptation for Warner Bros. Kalogridis wrote a draft of the 2004 film
Catwoman but ultimately did not receive a screenwriting credit. She was next credited as the screenwriter of the English language version of the 2004 film
Night Watch, and also wrote the script for the 2004 film
Alexander. In November 2005, she helped write
Borgia, an
ImageMovers film about the
Borgia family in 15th century Rome. In February 2006 she began writing
The Dive, director
James Cameron's planned film about the freediver Francisco "Pipin" Ferraras and his wife Audrey Mestre. In January 2007, she began writing
Alita: Battle Angel, director
James Cameron's planned film based on the classic cyberpunk manga
Battle Angel Alita. In October 2007, she did a rewrite of the vampire film
Darksiders for
New Line Cinema. She was screenwriter for the 2007 film
Pathfinder. Kalogridis became involved as a peacemaker in the
2007–2008 Writers Guild of America strike, working with writers and producers to reach a solution.
The New York Times reported her involvement, "Ms. Kalogridis and her friends... had become a pipeline to the guild members holding out for sizable gains, whose support would be needed if any deal was to be reached." She is also the founder of the pro-union website Hollywood United. She was executive producer and screenwriter of the 2010 film
Shutter Island. In 2013, she and
Patrick Lussier were both named co-writers for the fifth film in the
Terminator series,
Terminator Genisys. In 2018, she was producer for the film
The House with a Clock in Its Walls. She was also creator, screenwriter, and executive producer of
Altered Carbon, a
Netflix scifi series which premiered in February 2018. She continues to work on the film adaptation of the manga
Alita: Battle Angel as a co-writer along with James Cameron and
Robert Rodriguez, which was released on February 14, 2019. Since 2016 she has also been writing and executive producing the
untitled Sword Art Online live-action series for Netflix. In May 2019,
BuzzFeed News reported that Kalogridis had been hired in the spring of 2018 to write a film based on the 2003 video game
Star Wars: Knights of the Old Republic, and that she was close to completing the first script of a potential trilogy based on
the series. Representatives refused to comment, == Filmography ==