As a student Green wrote book reviews for The Guardian and The Observer before relocating to Los Angeles where she continued to occasionally contribute to both papers.
Green's first assignment was as a TV writer on Marvel Studios Wolverine and the X-Men followed by a sci-fi pilot sale, Dreamsolver, to ABC Television.
[2] Soon after this she was hired by producers George Clooney and Grant Heslov at Smokehouse Pictures to adapt Neal Stephenson's 1996 Hugo Award-winning post-cyberpunk novel The Diamond Age into a 3-part special event miniseries for the SyFy Channel.
Subsequently, Green was hired as a team with Patrick Given to write a feature film based on the life of the Polish teenage Holocaust rescuer Irene Gut Opdyke, by Good Deed Entertainment with Annabel Jankel as director.
Following this she was hired by Walden Media to adapt an upcoming YA novel for TV and set up an original comedy pilot that she wrote during lockdown.